HB Series Hydraulic Breaker Service Manual

Dealer Copy -- Not for Resale
Service Manual
HB Series Hydraulic Breaker
(Breaker HB280) S/N A5T500101 & Above
(Breaker HB380) S/N A01Q00101 & Above (Europe Only)
(Breaker HB580) S/N A00V00101 & Above (Europe Only)
(Breaker HB680) S/N A00W00101 & Above
(Breaker HB880) S/N A00X00101 & Above
(Breaker HB980) S/N A00Y00101 & Above
(Breaker HB1180) S/N A01R00101 & Above
6904105enUS (09-22) (L)
Printed in U.S.A.
© Bobcat Company 2022. All Rights Reserved.
Dealer Copy -- Not for Resale
Dealer Copy -- Not for Resale
MAINTENANCE SAFETY
WARNING
WARNING
Instructions are necessary before operating or servicing machine. Read and
understand the Operation & Maintenance Manual, Operator’s Handbook and
signs (decals) on machine. Follow warnings and instructions in the manuals
when making repairs, adjustments or servicing. Check for correct function after
adjustments, repairs or service. Untrained operators and failure to follow
W-2003-0807
instructions can cause injury or death.
Safety Alert Symbol: This symbol with a warning statement, means: “Warning, be alert! Your safety is
involved!” Carefully read the message that follows.
CORRECT
P-90216
Never service attachments / implements without
instructions. See Operation & Maintenance Manual and
Attachment / Implement Service Manual.
Cleaning and maintenance are required daily.
Never service or adjust attachment / implement with the
engine running unless instructed to do so in manual.
Always lower the attachment / implement to the ground
before lubricating or servicing.
Avoid contact with leaking hydraulic fluid or diesel fuel
under pressure. It can penetrate skin or eyes.
Stop, cool and clean engine of flammable materials before
checking fluids.
Keep body, loose objects and clothing away from moving
parts, electrical contacts, hot parts and exhaust.
Safety glasses are needed for eye protection from electrical
arcs, battery acid, compressed springs, fluids under
pressure and flying debris or when tools are used. Use eye
protection approved for type of welding.
MSW30-0409
1-1
HB Series Hydraulic Breaker Service Manual
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1-2
HB Series Hydraulic Breaker Service Manual
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CONTENTS
SAFETY & MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-01
HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-01
MAINFRAME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-01
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPEC-01
ALPHABETICAL INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INDEX-01
1-3
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1-4
HB Series Hydraulic Breaker Service Manual
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FOREWORD
SERIAL NUMBER LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Attachment Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
DELIVERY REPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
ATTACHMENT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1-5
HB Series Hydraulic Breaker Service Manual
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1-6
HB Series Hydraulic Breaker Service Manual
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SERIAL NUMBER LOCATION
Figure 3
HB 280
Attachment Serial Number
Always use the serial number of the hydraulic breaker
when requesting service information or when ordering
parts. Earlier or later models (identification made by
serial number) may use different parts, or it may be
necessary to use a different procedure in doing a specific
service operation.
1
Figure 1
EARLY MODELS
P-72255
The breaker serial number plate (Item 1) [Figure 1],
[Figure 2] or [Figure 3] is located on the frame.
Figure 4
1
P-63185
Figure 2
LATER MODELS
1
1
P-63183
NOTE: The breaker serial number (Item 1) [Figure 4]
is also etched into the face of the breaker
power cell between the hydraulic ports.
P-61743C
1-7
HB Series Hydraulic Breaker Service Manual
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DELIVERY REPORT
Figure 5
B-16315
The delivery report must be completed by the dealer and
signed by the owner or operator when the Bobcat
hydraulic breaker is delivered. An explanation of the form
must be given to the owner [Figure 5].
1-8
HB Series Hydraulic Breaker Service Manual
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ATTACHMENT IDENTIFICATION
SHOWN WITHOUT MOUNTING FRAME
HOUSING
RETAINING BAND*
P-61680A
MAINTENANCE TOOL
TOOL
HOSE GUARD
*EXTERNAL RETAINING BAND SHOWN.
SOME MODELS EQUIPPED WITH AN
INTERNAL RETAINING BAND.
HYDRAULIC QUICK
COUPLERS
1-9
P-94114
HB Series Hydraulic Breaker Service Manual
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ATTACHMENT IDENTIFICATION (CONT’D)
X-CHANGE™ MOUNTING FRAME
PIN-ON MOUNTING FRAME
BREAKER
MOUNT
BREAKER
MOUNT
PIN-ON
MOUNT
X-CHANGE
MOUNT
P-88736
P-88735
PIN GRABBER MOUNTING FRAME
BREAKER
MOUNT
PIN GRABBER
MOUNT
P-116237
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HB Series Hydraulic Breaker Service Manual
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ATTACHMENT IDENTIFICATION (CONT’D)
BOB-TACH / X-CHANGE™ MOUNTING FRAME
BOB-TACH® MOUNTING FRAME
STEP
BREAKER
MOUNT
STEP
BOB-TACH
MOUNT
STEP
BOB-TACH
MOUNT
X-CHANGE
MOUNT
HOSE GUIDE
HOSE GUIDE
P-88738
P-88737
COMMON INDUSTRY INTERFACE
MOUNTING FRAME
STEP
STEP
BREAKER
MOUNT
BOB-TACH
MOUNT
HOSE GUIDE
P-88737
1-11
HB Series Hydraulic Breaker Service Manual
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1-12
HB Series Hydraulic Breaker Service Manual
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SAFETY & MAINTENANCE
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-1
Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-1
SERVICE SCHEDULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1
Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1
INITIAL SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30-1
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30-1
Hose Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30-2
DAILY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-1
Bob-Tach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-1
Common Industry Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-3
X-Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-4
Pin-On Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-4
Manual Spring Loaded Coupler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-5
Pin Grabber Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-5
Hydraulic Quick Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-6
LUBRICATING THE ATTACHMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-1
Lubrication Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-1
REGULAR MAINTENANCE ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-60-1
Weekly Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-60-1
Retaining Band Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-60-3
Nitrogen Chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-60-4
REMOVAL AND INSTALLATION OF TOOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-70-1
Procedure (External Retaining Band) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-70-1
Procedure (Internal Retaining Band) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-70-10
ATTACHMENT STORAGE AND RETURN TO SERVICE . . . . . . . . . . . . . . . . . . . . . . . 10-80-1
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-80-1
Return To Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-80-1
10-01
HB Series Hydraulic Breaker Service Manual
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10-02
HB Series Hydraulic Breaker Service Manual
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TROUBLESHOOTING
Chart
WARNING
Instructions are necessary before operating or servicing machine. Read and
understand the Operation & Maintenance Manual, Operator’s Handbook and
signs (decals) on machine. Follow warnings and instructions in the manuals
when making repairs, adjustments or servicing. Check for correct function
after adjustments, repairs or service. Untrained operators and failure to follow
instructions can cause injury or death.
W-2003-0903
If the breaker is not working correctly, check the hydraulic system of the machine thoroughly before making any repairs
on the breaker. Breaker problems can be affected by a hydraulic system that is not operating to specifications or such
problems as a plugged fuel filter or hydraulic filter in the machine. Connect a flow meter to the machine to check the
hydraulic pump output, relief valve setting and tube lines to check flow and pressure. (See the machine’s Service Manual
for the correct procedure to connect the flow meter).
Use the following troubleshooting chart to locate and correct problems which most often occur with the attachment.
PROBLEM
Breaker will not fire.
CAUSE
CORRECTION
Machine fluid reservoir is low.
Add hydraulic fluid to the fluid reservoir.
Hydraulic hoses connected to wrong
ports.
Reverse hydraulic hoses.
Damaged hydraulic couplers.
Replace hydraulic couplers.
Machine main relief valve set too low. Adjust main relief valve to correct setting.
No hydraulic flow to the breaker.
Check the hydraulic flow to the breaker.
Machine hydraulic pump not working. Check flow of hydraulic pump. 
Repair or replace as needed.
Oil in the air chamber.
Damaged internal seals, replace seals (See
Breaker Service Manual)
Regulator ring damaged or installed
backwards.
Replace regulator ring. (See Breaker Service
Manual)
Tool bushing is worn.
Replace bushing.
Breaker stops after three blows.
Regulator ring damaged.
Replace regulator ring. (See Breaker Service
Manual)
Breaker runs very slowly or blow
per minute reducing.
Machine main relief valve set too low. Adjust main relief valve to correct setting.
Not enough hydraulic flow.
Test hydraulics for correct flow and pressure.
Excessive heat build up
Check oil cooler for debris and air flow Check
relief valve pressure.
Damaged hydraulic couplers.
Replace hydraulic couplers.
Internal leakage
Check seals and O-rings in the breaker
Check piston, sleeve and seal carrier for
wear. (See the Breaker Service Manual)
No breaking force and hoses jumping. Check diaphragm for damage. (See the
Breaker Service Manual)
Troubleshooting chart continued on next page.
10-10-1
HB Series Hydraulic Breaker Service Manual
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TROUBLESHOOTING (CONT’D)
Chart (Cont’d)
PROBLEM
Breaker fires erratically.
Breaker runs for twenty minutes
then stops. Breaker will restart
after thirty minutes of idle time.
Breaker lacks striking force.
CAUSE
CORRECTION
Machine main relief valve set too
low.
Adjust main relief valve to correct setting.
Excessive back pressure.
Check for plugged or bent return lines.
Low fluid level.
Add fluid to the reservoir as needed.
Not enough hydraulic flow.
Test hydraulics for correct flow and pressure.
Damaged hydraulic couplers.
Replace hydraulic couplers.
Tool binding
Add grease to the tool shank fitting.
Oil overheating
Clean machine radiator.
Adjust main relief valve to correct setting.
Add hydraulic fluid to the fluid reservoir
Breaker distributor damage from
overheating
Replace distributor. (See Breaker Service
Manual)
Regulator ring damaged.
Replace regulator ring. (See Breaker Service
Manual)
Not enough hydraulic flow.
Test hydraulics for correct flow and pressure.
Accumulator nitrogen pressure low. Check nitrogen pressure. If oil in accumulator
chamber, replace diaphragm. If pressure low,
recharge nitrogen. (See Breaker Service
Manual)
Make sure nitrogen fill plug is installed and
torque to specifications.
Excessive heat build up.
Tool is broken inside bushing.
Replace tool.
Blank firing.
Refer to the hydraulic controls section for
correct operating procedure.
Machine fluid reservoir is low.
Add hydraulic fluid to the fluid reservoir.
Hydraulic hoses between breaker Nitrogen charge pressure is low.
and machine are pulsing more
Accumulator nitrogen pressure is
than normal.
low.
Check nitrogen pressure. If oil in accumulator
chamber, replace diaphragm. If pressure low,
recharge nitrogen. (See Breaker Service
Manual)
Hydraulic oil on breaker tool.
Damaged piston seals.
Replace seals. (See Breaker Service Manual)
Tool breakage
Firing without sufficient down force
on the tool.
Apply additional down force with the machine.
Using the tool as a pry bar.
Only use perpendicular down force on the tool
when breaking, do not pry with tool.
Grinding on the side face of the tool. Grinding on the side face of the tool may cause
fatigue points or stress areas on the tool.
Tool corrosion
If the breaker or tool is unused for extended
periods of time, retract tool and grease the
outside of the tool.
Cold tool
If used in cold weather, keep tool in a warm
area prior to usage.
See the following troubleshooting chart also.
10-10-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
TROUBLESHOOTING (CONT’D)
Chart (Cont’d)
CHARGING
INFORMATION
AFFECTED ON BREAKER
Accumulator charge is Reduced life of the diaphragm low.
possibly forcing the diaphragm
into the schraeder valve inflation
hole.
Accumulator charge is Reduced diaphragm life too high.
possibly forcing the diaphragm
into the grid holes.
Figure 10-10-1
Pressure Measured
Possible 
Cause
Solution
kPA
bar (psi)
0 - 25,3
0 - 25
(0 - 360)
Diaphragm Replace
damaged or diaphragm.
deflated.
Charge
Nitrogen
Chamber.
25,3 - 40,8
25 - 40
(360 - 580)
OK
Above 40,8
Above 40
Diaphragm
(Above 580) damaged.
Replace
diaphragm.
Charging Information
Correct nitrogen charge pressure is an important factor in
the service life of the breaker diaphragm [Figure 10-101].
When the charge is too low, the breaker will cycle faster
than intended reducing the life of the diaphragm. Low
charge also causes the breaker to not hit as hard as
designed, reducing performance. When the charge is too
high, the breaker will cycle slower than intended and
build excessive heat affecting the performance and
service life of the breaker and carrier. A service interval of
every 12 months has been established for checking
nitrogen charge.
NOTE: If oil is detected in the nitrogen, the
diaphragm is damaged and must be replaced.
10-10-3
HB Series Hydraulic Breaker Service Manual
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10-10-4
HB Series Hydraulic Breaker Service Manual
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SERVICE SCHEDULE
Chart
10-20-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
10-20-2
HB Series Hydraulic Breaker Service Manual
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INITIAL SETUP
Installing The Excavator Mounting Frame On The
Breaker
Assembly
Figure 10-30-2
Installing The Bob-Tach® or Common Industry Interface
Mounting Frame On The Breaker
X-CHANGE MOUNT
4
3
NOTE: The Bob-Tach mounting frame is shown, but
the procedure for the Common Industry
Interface mounting frame is the same.
2
Figure 10-30-1
4
1
2
P-63186B
Figure 10-30-3
PIN-ON MOUNT
3
4
1
P-61743B
3
Install a block of wood (Item 1) under the breaker (Item 2)
[Figure 10-30-1].
2
Install the Bob-Tach or Common Industry Interface
mounting frame (Item 3) on the breaker (Item 2) [Figure
10-30-1].
1
Install the eight bolts (Item 4) [Figure 10-30-1] washers
and nuts.
P-61835B
Figure 10-30-4
Install the hose guard.
PIN GRABBER MOUNT
NOTE: The bottom mounting bolts will be installed
with hose guard.
4
Tighten the bolts and nuts in a crisscross pattern to 370
N•m (270 ft-lb) torque.
3
2
1
P-116238
Install a block of wood (Item 1) under the breaker (Item 2)
[Figure 10-30-2], [Figure 10-30-3], and [Figure 10-304].
10-30-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Hose Installation
Assembly (Cont’d)
Use the following list for the correct hose installation for
your model breaker and machine.
Installing The Excavator Mounting Frame On The
Breaker (Cont’d)
•
HB280 (When Used On 316 And 418 Model
Excavators) on Page 10-30-3.
•
HB380, HB580, HB680, HB880 And HB980 (Without
External Flow Diverter) on Page 10-30-5.
•
HB880 And HB980 (With External Flow Diverter) on
Page 10-30-7.
•
HB1180 (When Used On A300, S250, S300, S330,
S630, S650, T250, T300, T320, T630 And T650
Model Loaders) on Page 10-30-9.
•
HB1180 (When Used On 442 Model Excavator) on
Page 10-30-11.
•
HB880, HB980 And HB1180 (When Used On E60
Model Excavators) (S/N AGSZ11320 & Below) on
Page 10-30-13.
•
HB1180 (When Used On E80 Model Excavators) on
Page 10-30-14.
10-30-2
HB Series Hydraulic Breaker Service Manual
Install the mounting frame (Item 3) on the breaker (Item
2) [Figure 10-30-2], [Figure 10-30-3], and [Figure 1030-4].
Install the eight bolts, washers and nuts through the
mounting frame and breaker holes (Item 4) [Figure 1030-2], [Figure 10-30-3], and [Figure 10-30-4].
NOTE: The bottom mounting bolts will be installed
with hose guard.
Tighten the bolts and nuts in a crisscross pattern to 370
N•m (270 ft-lb) torque.
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Tighten the 90° elbows to 82 N•m (60 ft-lb) torque.
Hose Installation (Cont’d)
Figure 10-30-7
HB280 (When Used On 316 And 418 Model Excavators)
The breaker may be supplied without the hoses and
couplers installed on the breaker.
1
Figure 10-30-5
1
1
P-72249
Install the two hoses (Item 1) [Figure 10-30-7] on the 90°
elbows (Item 1) [Figure 10-30-6].
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-rings.
P-72247
Install the fittings (Item 1) [Figure 10-30-5].
Tighten the hoses to 82 N•m (60 ft-lb) torque.
NOTE: If the O-ring is being replaced, it requires
greasing while avoiding greasing the fitting
thread.
Figure 10-30-8
Tighten the fittings to 55 N•m (40 ft-lb) torque.
Figure 10-30-6
1
P-72250
Install the male coupler (Item 1) [Figure 10-30-8] on the
hose that connects to the HP port.
1
P-72248
Install the two 90° elbows (Item 1) [Figure 10-30-6] in the
ports.
NOTE: Installation of 90° elbows requires use of a
second wrench to prevent any damage to
previously installed fittings or O-rings.
10-30-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Figure 10-30-11
Hose Installation (Cont’d)
HB280 (When Used On 316 And 418 Model Excavators)
(Cont’d)
2
1
Figure 10-30-9
P-72253
1
Install the hose guard (Item 1) using the three bolts,
washers and nuts (Item 2) [Figure 10-30-11] provided
with the breaker.
Tighten the three nuts to 370 N•m (270 ft-lb) torque.
P-72251
Figure 10-30-12
Install the female coupler (Item 1) [Figure 10-30-9] on
the hose that connects to the BP port.
Figure 10-30-10
2
1
1
P-72254
The bolt (Item 1) and nut (Item 2) [Figure 10-30-12] need
only to be lightly tightened.
P-72252
Remove the bolt (Item 1) [Figure 10-30-10] washer and
nut.
10-30-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Figure 10-30-14
Hose Installation (Cont’d)
2
HB380, HB580, HB680, HB880 And HB980 (Without
External Flow Diverter)
The breaker may be supplied without the hoses and
couplers installed on the breaker.
2
Figure 10-30-13
1
P-61716
Install the two 90° elbows (Item 1) [Figure 10-30-14] in
the ports.
2
NOTE: Installation of 90° elbows requires use of a
second wrench to prevent any damage to
previously installed fittings or O-rings.
1
Tighten the 90° elbows to specified torque.
P-63183
BREAKER
MODEL
HB380
HB580
HB680
HB880
HB980
The port marked HP (Item 1) [Figure 10-30-13] will be
connected to the breaker hose with the male coupler.
The port marked BP (Item 2) [Figure 10-30-13] will be
connected to the breaker hose with the female coupler.
NOTE: If the O-ring is being replaced, it requires
greasing while avoiding greasing the fitting
thread.
Install the coupler fittings (Items 1 and 2) [Figure 10-3013].
Tighten the coupler fittings to specified torque.
BREAKER
MODEL
HB380
HB580
HB680
HB880
HB980
TORQUE
TORQUE
82 N•m (60 ft-lb)
82 N•m (60 ft-lb)
82 N•m (60 ft-lb)
114 N•m (84 ft-lb)
114 N•m (84 ft-lb)
Install the two hoses (Item 2) on the 90° elbows (Item 1)
[Figure 10-30-14].
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-rings.
Tighten the hoses to specified torque.
BREAKER
MODEL
HB380
HB580
HB680
HB880
HB980
55 N•m (40 ft-lb)
55 N•m (40 ft-lb)
82 N•m (60 ft-lb)
114 N•m (84 ft-lb)
114 N•m (84 ft-lb)
TORQUE
82 N•m (60 ft-lb)
114 N•m (84 ft-lb)
114 N•m (84 ft-lb)
114 N•m (84 ft-lb)
114 N•m (84 ft-lb)
Install the two hoses (Item 2) on the 90° elbows (Item 1)
[Figure 10-30-14].
10-30-5
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Hose Installation (Cont’d)
HB680, HB880 And HB980 (Without External Flow
Diverter) (Cont’d)
Figure 10-30-15
1
2
P-61718
Install the male coupler (Item 1) [Figure 10-30-15] on the
hose that connects to the HP port.
Install the female coupler (Item 2) [Figure 10-30-15] on
the hose that connects to the BP port.
Figure 10-30-16
1
2
3
P-63185
Install the bracket (Item 1), the three bolts (Item 2 and 3)
[Figure 10-30-16], washers and nuts.
Tighten the two bolts and nuts (Item 2) [Figure 10-30-16]
to 370 N•m (270 ft-lb) torque.
The bolt and nut (Item 3) [Figure 10-30-16] need only to
be lightly tightened.
10-30-6
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Install the 45° fitting (Item 2) [Figure 10-30-17] (if
required).
Hose Installation (Cont’d)
NOTE: If the O-ring is being replaced, it requires
greasing while avoiding greasing the fitting
thread.
HB880 And HB980 (With External Flow Diverter)
The breaker may be supplied without the hoses and
couplers installed on the breaker.
NOTE: When using the HB880 (S/N A00X19999 &
Below) or HB980 (S/N A00Y19999 & Below)
breakers on A770, S630, S650, S750, S770,
T630, T650, T750 and T770 model loaders or
E60 excavator (S/N AGSZ11320 & Below), the
breaker must be equipped with a diverter
valve kit. Breakers with a higher serial number
are equipped with an internal diverter valve
and do not require the external diverter valve
kit.
NOTE: If operating the breaker on an E60 excavator
(S/N AGSZ11320 & Below), the 45° fitting (Item
2) [Figure 10-30-17] is installed facing away
from the straight fitting.
Tighten the fittings to 114 N•m (84 ft-lb) torque.
Figure 10-30-19
Earlier Models
1
Install the hose guard. (See Figure 10-30-16 on Page 1011-6.)
Figure 10-30-17
Earlier Models
1
2
P-88747
2
Figure 10-30-20
Later Models
1
P-88745
1
P-88934
Figure 10-30-18
Later Models
1
1
P102549
Install the hoses (Item 1) [Figure 10-30-19] or [Figure
10-30-20] on the fittings.
1
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-rings.
P102549
Install the straight fitting(s) (Item 1) [Figure 10-30-17] or
[Figure 10-30-18] (if required).
Tighten the hoses to 114 N•m (84 ft-lb) torque.
10-30-7
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Figure 10-30-23
Hose Installation (Cont’d)
HB880 And HB980 (With External Flow Diverter) (Cont’d)
Figure 10-30-21
E60 Excavator Hose Installation (Earlier)
1
1
1
2
P-61718
Install the male coupler (Item 1) [Figure 10-30-23] on the
hose that connects to the valve P port (breaker HP port).
Install the female coupler (Item 2) [Figure 10-30-23] on
the hose that connects to the valve R port (breaker BP
port).
P-88935
Figure 10-30-22
E60 Excavator Hose Installation (Later)
1
1
P102616
Install the hoses (Item 1) [Figure 10-30-21] or [Figure
10-30-22] on the fittings.
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-rings.
Tighten the hoses to 114 N•m (84 ft-lb) torque.
10-30-8
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
NOTE: If the O-ring is being replaced, it requires
greasing while avoiding greasing the fitting
thread.
Hose Installation (Cont’d)
HB1180 (When Used On A300, S250, S300, S330,
S630, S650, T250, T300, T320, T630 And T650 Model
Loaders)
Install the two 90° elbows (Item 2) [Figure 10-30-25] in
the ports.
The breaker may be supplied without the hoses installed
on the breaker.
NOTE: Installation of 90° elbows requires use of a
second wrench to prevent any damage to
previously installed fittings or O-rings.
Figure 10-30-24
Tighten the 90° elbows to 114 N•m (84 ft-lb) torque.
Figure 10-30-26
1
2
1
1
2
2
P-65872
P-65874
The port marked HP (Item 1) [Figure 10-30-24] will be
connected to the breaker hose with the male coupler.
The port marked BP (Item 2) [Figure 10-30-24] will be
connected to the breaker hose with the female coupler.
Install the two hoses (Item 1) on the 90° elbows (Item 2)
[Figure 10-30-26].
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-rings.
Figure 10-30-25
Installation: Tighten the hoses to 114 N•m (84 ft-lb)
torque.
2
2
1
1
P-65872
Install the coupler fittings (Item 1) [Figure 10-30-25].
Tighten the coupler fittings to 114 N•m (84 ft-lb) torque.
10-30-9
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Figure 10-30-29
Hose Installation (Cont’d)
HB1180 (When Used On A300, S250, S300, S330,
S630, S650, T250, T300, T320, T630 And T650 Model
Loaders) (Cont’d)
2
Figure 10-30-27
1
3
P-65876
1
Install the hose guard (Item 1) using the four bolts,
washers and nuts (Item 2) [Figure 10-30-29] provided
with the breaker.
2
Tighten the four bolts and nuts (Item 2) [Figure 10-3029] to 370 N•m (270 ft-lb) torque.
P-61718
Install the male coupler (Item 1) [Figure 10-30-27] on the
hose that connects to the HP port.
The bolt and nut (Item 3) [Figure 10-30-29] need only to
be lightly tightened.
Install the female coupler (Item 2) [Figure 10-30-27] on
the hose that connects to the BP port.
Figure 10-30-28
1
P-65875
Remove the four bolts (Item 1) [Figure 10-30-28]
washers and nuts.
10-30-10
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
NOTE: If the O-ring is being replaced, it requires
greasing while avoiding greasing the fitting
thread.
Hose Installation (Cont’d)
HB1180 (When Used On 442 Model Excavator)
Install the two 90° elbows (Item 2) [Figure 10-30-31] in
the ports.
The breaker may be supplied without the hoses installed
on the breaker.
Figure 10-30-30
NOTE: Installation of 90° elbows requires use of a
second wrench to prevent any damage to
previously installed fittings or O-rings.
Tighten the 90° elbows to 114 N•m (84 ft-lb) torque.
Figure 10-30-32
2
1
2
1
2
P-65872A
1
The port marked HP (Item 1) [Figure 10-30-30] will be
connected to the breaker hose with the screw type quick
coupler.
P-65874A
The port marked BP (Item 2) [Figure 10-30-30] will be
connected to the breaker hose with the sleeve type quick
coupler.
Install the two hoses (Item 1) on the 90° elbows (Item 2)
[Figure 10-30-32].
Figure 10-30-31
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-ring.
Tighten the hoses to 114 N•m (84 ft-lb) torque.
2
2
1
1
P-65872A
Install the coupler fittings (Item 1) [Figure 10-30-31].
Tighten the coupler fittings to 114 N•m (84 ft-lb) torque.
10-30-11
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Figure 10-30-35
Hose Installation (Cont’d)
HB1180 (When Used On 442 Model Excavator) (Cont’d)
Figure 10-30-33
1
For Model 442 Only
1
P-65875A
Remove the four bolts (Item 1) [Figure 10-30-35]
washers and nuts.
Figure 10-30-36
P-65881
Install the screw type male coupler (Item 1) [Figure 1030-33] on the hose that connects to the HP port.
Figure 10-30-34
2
For Model 442 Only
1
1
3
P-65876A
Install the hose guard (Item 1) using the four bolts,
washers and nuts (Item 2) [Figure 10-30-36] provided
with the breaker.
P-65880
Tighten the four bolts and nuts (Item 2) [Figure 10-3036] to 370 N•m (270 ft-lb) torque.
Install the sleeve type male coupler (Item 1) [Figure 1030-34] on the hose that connects to the HB port.
The bolt and nut (Item 3) [Figure 10-30-36] need only to
be lightly tightened.
10-30-12
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Install the two 90° elbows (Item 2) [Figure 10-30-38] in
the ports.
Hose Installation (Cont’d)
HB880, HB980 And HB1180 (When Used On E60 Model
Excavators) (S/N AGSZ11320 & Below)
NOTE: Installation of 90° elbows requires use of a
second wrench to prevent any damage to
previously installed fittings or O-rings.
The breaker may be supplied without the hoses installed
on the breaker.
Tighten the 90° elbows to 114 N•m (84 ft-lb) torque.
Figure 10-30-39
Figure 10-30-37
1
2
2
2
1
1
P-88291
P-88290
The port marked HP (Item 1) [Figure 10-30-37] will be
connected to the breaker hose with the male coupler.
Install the two hoses (Item 1) on the 90° elbows (Item 2)
[Figure 10-30-39].
The port marked BP (Item 2) [Figure 10-30-37] will be
connected to the breaker hose with the female coupler.
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-ring.
Figure 10-30-38
Tighten the hoses to 114 N•m (84 ft-lb) torque.
Figure 10-30-40
2
E60 Excavators
1
2
1
1
P-88290
P-61718
Install the coupler fittings (Item 1) [Figure 10-30-38].
Tighten the coupler fittings to 114 N•m (84 ft-lb) torque.
Install the male coupler (Item 1) [Figure 10-30-40] on the
hose that connects to the HP port.
NOTE: If the O-ring is being replaced, it requires
greasing while avoiding greasing the fitting
thread.
Install the female coupler (Item 2) [Figure 10-30-40] on
the hose that connects to the BP port.
10-30-13
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Install the two 90° elbows (Item 2) [Figure 10-30-42] in
the ports.
Hose Installation (Cont’d)
NOTE: Installation of 90° elbows requires use of a
second wrench to prevent any damage to
previously installed fittings or O-rings.
HB1180 (When Used On E80 Model Excavators)
The breaker may be supplied without the hoses installed
on the breaker.
Figure 10-30-43
Figure 10-30-41
1
2
2
2
1
1
P-88291
P-88290
Install the two hoses (Item 1) on the 90° elbows (Item 2)
[Figure 10-30-43].
The port marked HP (Item 1) [Figure 10-30-41] will be
connected to the breaker hose with the male coupler.
The port marked BP (Item 2) [Figure 10-30-41] will be
connected to the breaker hose with the female coupler.
NOTE: Installation of hoses requires use of a second
wrench to prevent any damage to previously
installed fittings or O-ring.
Tighten the hoses to 114 N•m (84 ft-lb) torque.
Figure 10-30-42
Figure 10-30-44
E80 Excavators
2
1
2
1
1
P-88290
P-61718
Install the coupler fittings (Item 1) [Figure 10-30-42].
Install the male coupler (Item 1) [Figure 10-30-44] on the
hose that connects to the HP port.
Tighten the coupler fittings to 114 N•m (84 ft-lb) torque.
NOTE: If the O-ring is being replaced, it requires
greasing while avoiding greasing the fitting
thread.
Install the female coupler (Item 2) [Figure 10-30-44] on
the hose that connects to the BP port.
10-30-14
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
INITIAL SETUP (CONT’D)
Figure 10-30-46
Hose Installation (Cont’d)
HB1180 (When Used On E80 Model Excavators)
(Cont’d)
2
Figure 10-30-45
1
1
3
P-88837
Install the hose guard (Item 1) using the four bolts,
washers and nuts (Item 2) [Figure 10-30-46] provided
with the breaker.
Tighten the four bolts and nuts (Item 2) [Figure 10-3046] to 370 N•m (270 ft-lb) torque.
P-88579
Remove the four bolts (Item 1) [Figure 10-30-45]
washers and nuts.
The bolt and nut (Item 3) [Figure 10-30-46] need only to
be lightly tightened.
10-30-15
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
10-30-16
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DAILY INSPECTION
Hand Lever Bob-Tach
Bob-Tach
Figure 10-40-2
Figure 10-40-1
2
P-41502A
1
Push down on the Bob-Tach levers until they are fully
engaged in the locked position [Figure 10-40-2] (wedges
fully extended through the attachment mounting frame
holes).
1
P18026
Inspect the Bob-Tach wedge mounts (Item 1), mounting
flange (Item 2) [Figure 10-40-1] and all welds on the
breaker mount for wear and damage each time the
breaker is removed from the machine.
The levers and wedges must move freely [Figure 10-402].
Figure 10-40-3
WARNING
AVOID INJURY OR DEATH
The Bob-Tach wedges must extend through the holes
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can
allow attachment to come off.
Bob-Tach wedge must
contact the lower edge
of the attachment
mounting frame hole.
W-2715-0208
P-79780
The wedges must extend through the holes in the
attachment mounting frame, securely fastening the
attachment to the Bob-Tach [Figure 10-40-3].
NOTE: If the wedge does not contact the lower edge
of the hole, the attachment will be loose and
can come off the Bob-Tach.
Inspect the mounting frame on the attachment. (See the
machine's Operation & Maintenance Manual for
inspecting the Bob-Tach). Replace any parts that are
damaged, bent or missing. Keep all fasteners tight. Look
for cracked welds.
Lubricate the wedges. (See the machine’s Operation &
Maintenance Manual for the correct procedure.)
10-40-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DAILY INSPECTION (CONT’D)
Figure 10-40-6
Bob-Tach (Cont’d)
Power Bob-Tach
WARNING
Bob-Tach wedge must
contact the lower edge
of the attachment
mounting frame hole.
AVOID INJURY OR DEATH
The Bob-Tach wedges must extend through the holes
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can
allow attachment to come off.
P-79780
W-2715-0208
The wedges must extend through the holes in the
attachment mounting frame, securely fastening the
attachment to the Bob-Tach [Figure 10-40-6].
Figure 10-40-4
Loader Switch
NOTE: If the wedge does not contact the lower edge
of the hole, the attachment will be loose and
can come off the Bob-Tach.
Inspect the mounting frame on the attachment. (See the
machine's Operation & Maintenance Manual for
inspecting the Bob-Tach). Replace any parts that are
damaged, bent or missing. Keep all fasteners tight. Look
for cracked welds.
1
Lubricate the wedges. (See the machine’s Operation &
Maintenance Manual for the correct procedure.)
B-15993A
Figure 10-40-5
P-41500A
Push and hold the BOB-TACH “WEDGES DOWN” switch
(Item 1) [Figure 10-40-4] and until the levers are fully
engaged in the locked position [Figure 10-40-5] (wedges
fully extended through the attachment mounting frame
holes).
10-40-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DAILY INSPECTION (CONT’D)
Figure 10-40-8
Common Industry Interface
Figure 10-40-7
2
P124033
Push down on the locking levers until they are fully
engaged in the locked position [Figure 10-40-8] (pins
fully extended through the attachment mounting frame
holes).
1
P124106
Common Industry Interface: Inspect the Common
Industry Interface mounting holes (Item 1), mounting
flange (Item 2) [Figure 10-40-7] and all welds on the
trencher for wear and damage each time the trencher is
removed from the machine.
The levers and pins must move freely [Figure 10-40-8].
Figure 10-40-9
Frequently inspect the trencher to ensure that all
components are secure and that all bolts and nuts are
tight.
1
1
WARNING
2
The Common Industry Interface locking pins must
extend through the holes in attachment frame.
Levers must be fully down and locked. Failure to
secure the locking pins can allow attachment to
come off and cause serious injury or death.
P124037
P124036
W-2996-1015
The pins (Item 1) must extend through the holes in the
attachment mounting frame (Item 2), [Figure 10-40-9]
securely fastening the attachment to the interface.
Inspect the mounting frame on the machine. (See the
machine's Operation & Maintenance Manual for
inspecting the Common Industry Interface). Replace any
parts that are damaged, bent or missing. Keep all
fasteners tight. Look for cracked welds.
Lubricate the locking pins. (See the machine’s Operation
& Maintenance Manual for the correct procedure.)
10-40-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DAILY INSPECTION (CONT’D)
Pin-On Attachment
X-Change
Figure 10-40-11
Figure 10-40-10
1
1
P-72244
P-61694
Inspect the X-Change mount (Item 1) [Figure 10-40-10]
and all welds on the breaker mount for wear or damage
each time the breaker is removed from the machine.
Inspect the Pin-On mount for wear or damage. Inspect
the pivot pins (Item 1) [Figure 10-40-11] and mounts (on
the attachment) for wear or damage.
Repair or replace damaged parts.
Repair or replace damaged parts.
10-40-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DAILY INSPECTION (CONT’D)
Pin Grabber Attachment
Manual Spring Loaded Coupler
Figure 10-40-13
Figure 10-40-12
1
1
P-116235
P-65765
Inspect the manual spring loaded coupler and mount for
wear or damage. Inspect the pivot pins (Item 1) [Figure
10-40-12] and mounts (on the attachment) for wear or
damage.
Inspect the Pin Grabber mount for wear or damage.
Inspect the pins (Item 1) [Figure 10-40-13] and mounts
(on the attachment) for wear or damage.
Repair or replace damaged parts.
Repair or replace damaged parts.
10-40-5
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DAILY INSPECTION (CONT’D)
Hydraulic Quick Couplers
Figure 10-40-14
2
3
4
BLACK
1
BLACK
P-39106
Inspect the quick coupler for damage and / or cracks.
Replace the couplers if damaged.
New breakers are supplied with a more durable coupler
(Item 1). This coupler uses 4 curved latches (Item 2)
rather than the 16 round latches (Item 3) that are used on
standard couplers (Item 4) [Figure 10-40-14].
All loaders and attachments (except the breakers) are
factory supplied with coupler (Item 4). It is recommended
that the existing coupler on the machine be replaced by
coupler (Item 1) [Figure 10-40-14] for increased coupler
service life.
The coupler (Item 1) [Figure 10-40-14] can be identified
by the black color on the coupler body or by retracting the
sleeve and viewing the couplers as shown.
10-40-6
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
LUBRICATING THE ATTACHMENT
If the tool is not greased at recommended intervals, tool
and bushing wear will occur.
Lubrication Locations
Figure 10-50-2
External Retaining Band
WARNING
2
AVOID BURN INJURY
Breaker tool can be hot after use. Let breaker tool
cool or use gloves when handling tool.
W-2204-0905
Put the breaker in the horizontal position.
Fully lower the breaker to the ground and stop the
engine.
1
P-63756
Push the tool up inside the breaker as far as possible.
Use the maintenance tool (Item 1) to turn the retainer
band (Item 2) [Figure 10-50-2] until the grease fitting is
covered to keep out contamination.
Figure 10-50-1
1
3
4
2
P-63755
Use the maintenance tool (Item 1) to turn the retainer
band (Item 2) until the grease fitting (Item 3) is
accessible. Push the tool (Item 4) [Figure 10-50-1] fully
into the breaker.
NOTE: Do not use an electric or pneumatic grease
gun. Over greasing may damage the seal.
NOTE: Failure to push the tool up inside the breaker
before greasing may cause seal damage.
Apply grease (4 - 5 pumps) to the upper end of the tool at
the grease fitting (Item 3) [Figure 10-50-1] every 4 hours
of operation or sooner if the tool looks dry.
Always use a good quality lithium base multipurpose
grease when lubricating the attachment. Apply lubricant
until extra grease shows.
10-50-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
LUBRICATING THE ATTACHMENT (CONT’D)
Lubrication Locations (Cont’d)
Figure 10-50-3
Internal Retaining Band
1
P-84991A
Rotate the tool pin retainer band to access the grease
fitting.
Apply grease (5 - 6 pumps) to the grease fitting (Item 1)
[Figure 10-50-3] every 4 hours of operation or sooner if
the tool looks dry.
NOTE: Use a good quality lithium based grease.
Lower quality grease may melt when hot and
reduce the life of the tool and bushing.
Rotate the retainer band to the closed position after
greasing.
IMPORTANT
Underwater use of the breaker will cause internal
damage. No portion of the breaker may be
submerged.
I-2053-0589
10-50-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REGULAR MAINTENANCE ITEMS
Figure 10-60-3
Weekly Inspection
2
WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-0907
Figure 10-60-1
2
3
1
P-61829
Use the maintenance tool (Item 1) to inspect the tool
retainer pin (Item 2) for wear. Replace the pin if the
maintenance tool notch (Item 3) [Figure 10-60-3] fits
over the pin along the length of the pin. Inspect the pin
along the entire length.
1
Replace the pin if damaged.
For Models HB280, HB680, HB880, And HB980
Figure 10-60-4
1
1
3
P-61727
Figure 10-60-2
CORRECT
GRIND
1
2
1
2
P-61827
DO NOT
GRIND
Check the end chamfer on the bushing.
1
WRONG
V-0737
Inspect both ends of the tool (Item 1) [Figure 10-60-1]
and [Figure 10-60-2] for damage and / or cracks.
Replace the tool if damaged or worn.
Inspect the side edges of the retaining pin groove (Item
2) [Figure 10-60-1] and [Figure 10-60-2]. If metal burrs
are present on the outer edge, carefully file or grind the
burrs. Do not grind on the diameter of the tool. Grind the
tool length ways, NOT side ways. Do not weld on the tool.
Install the maintenance tool (Item 1) into the bushing
(Item 2) [Figure 10-60-4] as shown and rotate the tool
180° to check the chamfer.
Replace the bushing if the tabs (Item 1) on the tool
contact the end of bushing (Item 3) [Figure 10-60-4] at
any point.
NOTE: The bushing is shown removed for photo
clarity.
NOTE: Failure to replace a worn bushing may result
in reduced performance.
10-60-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Figure 10-60-6
REGULAR MAINTENANCE ITEMS (CONT’D)
External Retaining Band
Weekly Inspection (Cont’d)
For All Models
1
Figure 10-60-5
1
2
2
2
P-61740
Inspect the retaining band (Item 1) [Figure 10-60-6] for
wear or damage.
3
1
Replace the retaining band if a gap of more than 2 mm
(0.08 in) can be measured at any point between the side
of the band and the side of the housing (Item 2) [Figure
10-60-6].
P-61828
Check the internal wear on the bushing.
Install the maintenance tool (Item 1) into the bushing
(Item 2) [Figure 10-60-5] as shown and rotate the tool
180° to check the chamfer.
Figure 10-60-7
Internal Retaining Band
Replace the bushing if the tabs (Item 1) on the
maintenance tool contact the end of the bushing (Item 2)
at any point of the diameter of the bushing (Item 3)
[Figure 10-60-5].
1
NOTE: The bushing is shown removed for photo
clarity.
NOTE: Failure to replace a worn bushing may result
in reduced performance.
P-84993A
If the retaining band (Item 1) [Figure 10-60-7] is
damaged, see your dealer for replacement information
and parts.
The breaker will need to be removed from the mounting
frame to service the retaining band (Item 1) [Figure 1060-7].
10-60-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REGULAR MAINTENANCE ITEMS (CONT’D)
Figure 10-60-8
Retaining Band Replacement
1
3
WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
2
P-63776
W-2019-0907
Position the breaker so the hose guard (Item 1) [Figure
10-60-8] is facing up.
Install a block of wood (Item 2) [Figure 10-60-8] under
the breaker.
Position the retaining band (Item 3) [Figure 10-60-8] over
the end of the breaker with the slot in the retainer band
facing up.
Figure 10-60-9
2
1
P-63775
Using a second block of wood (Item 1) and a hammer,
force the retaining band (Item 2) [Figure 10-60-9] over
the end of the breaker.
After the retaining band is positioned over the breaker
frame, use the gauge tool to reposition the retaining band
on the breaker frame.
10-60-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REGULAR MAINTENANCE ITEMS (CONT’D)
Figure 10-60-11
Nitrogen Chamber
Checking The Nitrogen Chamber Charge Pressure
Use the following procedure to check the nitrogen charge
pressure.
1
NOTE: Hydraulic pressure in the breaker can affect
checking the accumulator charge pressure.
Before checking the charge pressure, relieve
the hydraulic pressure.
The breaker check valve is located under the breaker
mounting frame. Remove the breaker mounting frame.
P-61816A
Remove the plug (Item 1) [Figure 10-60-11].
WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
NOTE: If the plug (Item 1) [Figure 10-60-11] is tight,
tap the end of the plug with a hammer before
removing.
Figure 10-60-12
W-2019-0907
1
Use the nitrogen accumulator charge pressure gauge
MEL1523B to check the pressure.
Figure 10-60-10
P18084
Install the correct adapter (Item 1) [Figure 10-60-12] on
the gauge.
1
P-61820
Block up the breaker so the tool (Item 1) [Figure 10-6010] is not under pressure and is not in contact with the
nitrogen chamber.
10-60-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REGULAR MAINTENANCE ITEMS (CONT’D)
Figure 10-60-15
Nitrogen Chamber (Cont’d)
Checking The Nitrogen Chamber Charge Pressure
(Cont’d)
1
Figure 10-60-13
3,2 mm (0.125 in)
P-61817
Install the gauge / adapter on the breaker [Figure 10-6015].
1
Tighten the adapter (Item 1) [Figure 10-60-15] on the
breaker.
P-42758
Figure 10-60-16
Measure the pin (Item 1) [Figure 10-60-13] protrusion.
Manually extend or retract the pin until the pin measures
3,2 mm (0.125 in) from pin tip to adapter face.
Figure 10-60-14
1
P-61818
Slowly turn the gauge valve body (Item 1) [Figure 10-6016] clockwise until the gauge shows a reading. If the
pressure is low, recharge the breaker.
P-42759
Loosen the adapter until the pin is flush with the end of
the adapter as shown [Figure 10-60-14].
10-60-5
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REGULAR MAINTENANCE ITEMS (CONT’D)
Figure 10-60-18
Nitrogen Chamber (Cont’d)
Discharging The Nitrogen Chamber
WARNING
1
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-0907
The breaker check valve is located under the breaker
mounting frame. Remove the breaker mounting frame.
P-61819
Using a small shaft, push the valve (Item 1) [Figure 1060-18] inward to release the gas pressure.
NOTE: If oil is detected in the nitrogen, the
diaphragm is damaged and must be replaced.
Install the plug in the charge valve.
Figure 10-60-17
Tighten the plug to 37 N•m (27 ft-lb) torque.
NOTE: When in doubt of nitrogen charge pressure or
when recharging a hot breaker, release the
nitrogen pressure completely and recharge
the nitrogen chamber.
1
P-61816
Remove the plug (Item 1) [Figure 10-60-17] from the
charge valve.
10-60-6
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Figure 10-60-21
REGULAR MAINTENANCE ITEMS (CONT’D)
Nitrogen Chamber (Cont’d)
Charging The Nitrogen Chamber
1
NOTE: When in doubt of nitrogen charge pressure or
when recharging a hot breaker, release the
nitrogen pressure completely and recharge
the nitrogen chamber.
Figure 10-60-19
P18097
Install the adapter (Item 1) [Figure 10-60-21] on the
“Above 7,0 kPa (6,89 bar) (100 psi)” side of the charging
tool.
1
Figure 10-60-22
P-61820
1
Block up the breaker so the tool (Item 1) [Figure 10-6019] is not under pressure and is not in contact with the
nitrogen chamber.
Figure 10-60-20
2
P-61821
Install the charging tool (Item 1) [Figure 10-60-22] on the
breaker.
Remove the cap (Item 2) [Figure 10-60-22] from the
charging tool.
1
P-61819
Remove the plug (Item 1) [Figure 10-60-20].
NOTE: If the plug (Item 1) [Figure 10-60-20] is tight,
tap the end of the plug with a hammer before
removing.
10-60-7
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REGULAR MAINTENANCE ITEMS (CONT’D)
Figure 10-60-24
Nitrogen Chamber (Cont’d)
Charging The Nitrogen Chamber (Cont’d)
1
Figure 10-60-23
1
P-61816
NOTE: Inspect the O-ring on the plug (Item 1) [Figure
10-60-24] for damage. Replace if necessary.
2
Install and tighten the plug (Item 1) [Figure 10-60-24].
P-61822A
Tighten the plug to 37 N•m (27 ft-lb) torque.
Connect the nitrogen hose (Item 1) to the charging tool
(Item 2) [Figure 10-60-23].
Using the regulator valve on the nitrogen tank, slowly fill
the chamber to the 32,6 kPa (32 bar) (464 psi).
Close the valve on the nitrogen tank.
Disconnect the hose and charging tool.
10-60-8
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL
Figure 10-70-2
Procedure (External Retaining Band)
Tool Removal For Earlier Breaker Models
WARNING
AVOID INJURY OR DEATH
Securely block up the attachment before working
underneath.
1
W-2795-0409
P-61732
NOTE: For later breaker models (See Tool Removal
For Later Breaker Models on Page 10-70-4.)
Install the maintenance tool (Item 1) [Figure 10-70-2].
Figure 10-70-1
Figure 10-70-3
2
2
1
3
1
P-63761
P-61733
Raise and block (Item 1) [Figure 10-70-1] the front of the
breaker.
Turn the maintenance tool (Item 1) 90° to expand the
band (Item 2) [Figure 10-70-3].
Pull the tool (Item 2) [Figure 10-70-1] out as far as
possible. (This will help to hold the tool retaining pin in
place when the retainer is repositioned.)
Place a piece of cardboard or a shop towel (Item 3)
[Figure 10-70-1] under the breaker for the tool retaining
pin to land on. This will keep the pin from being
contaminated if it falls on the ground.
WARNING
AVOID BURN INJURY
Breaker tool can be hot after use. Let breaker tool
cool or use gloves when handling tool.
W-2204-0905
10-70-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-6
Procedure (External Retaining Band) (Cont'd)
Tool Removal For Earlier Breaker Models (Cont’d)
Figure 10-70-4
1
1
P-61730
Remove the tool (Item 1) [Figure 10-70-6].
Figure 10-70-7
P-61734
Move the band (Item 1) [Figure 10-70-4] forward as
shown.
Figure 10-70-5
GREASE
P-61727
1
Apply grease to the top section of the tool [Figure 10-707].
P-63763
Push the tool towards the breaker and remove the tool
retainer pin (Item 1) [Figure 10-70-5].
10-70-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Procedure (External Retaining Band) (Cont'd)
Tool Removal For Earlier Breaker Models (Cont’d)
Figure 10-70-8
1
P-61728
Apply grease to the inside diameter of the lower bushing
(Item 1) [Figure 10-70-8].
NOTE: Use a quality lithium based grease. Lower
quality grease may melt when hot and reduce
the life of the tool and bushing.
10-70-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
WARNING
Procedure (External Retaining Band) (Cont'd)
Tool Removal For Later Breaker Models
AVOID BURN INJURY
Breaker tool can be hot after use. Let breaker tool
cool or use gloves when handling tool.
W-2204-0905
WARNING
Figure 10-70-10
AVOID INJURY OR DEATH
Securely block up the attachment before working
underneath.
W-2795-0409
NOTE: For earlier breaker models (See Tool Removal
For Earlier Breaker Models on Page 10-70-1.)
(See Tool Removal For Earlier Breaker Models
on Page 10-70-1.)
1
NOTE: Later breaker models can be identified by the
two band retainers that are located on each
sides of the band.
P-86968
Figure 10-70-9
BAND RETAINERS
Install the maintenance tool (Item 1) [Figure 10-70-10].
Figure 10-70-11
2
2
3
1
P-63761A
Raise and block (Item 1) [Figure 10-70-9] the front of the
breaker.
Pull the tool (Item 2) [Figure 10-70-9] out as far as
possible. (This will help to hold the tool retaining pin in
place when the retainer is repositioned.)
1
P-86967
Turn the maintenance tool (Item 1) 90° to expand the
band (Item 2) [Figure 10-70-11].
Place a piece of cardboard or a shop towel (Item 3)
[Figure 10-70-9] under the breaker for the tool retaining
pin to land on. This will keep the pin from being
contaminated if it falls on the ground.
10-70-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-14
Procedure (External Retaining Band) (Cont'd)
Tool Removal For Later Breaker Models (Cont’d)
Figure 10-70-12
2
GREASE
P-61727
1
3
Apply grease to the top section of the tool [Figure 10-7014]
Figure 10-70-15
P-86966
Rotate the maintenance tool (Item 1) and the band (Item
2) until the maintenance tool (Item 1) [Figure 10-70-12]
is under the beaker.
The tool retainer pin (Item 3) [Figure 10-70-12] will drop
out from the bottom of the breaker.
Figure 10-70-13
1
P-61728
Apply grease to the inside diameter of the lower bushing
(Item 1) [Figure 10-70-15].
NOTE: Use a quality lithium based grease. Lower
quality grease may melt when hot and reduce
the life of the tool and bushing.
1
P-86965
The breaker tool (Item 1) [Figure 10-70-13] can now be
removed from the breaker by pulling out on the tool.
10-70-5
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-18
Procedure (External Retaining Band) (Cont'd)
Tool Installation For Earlier Breaker Models
NOTE: For later breaker models (See Tool Installation
For Later Breaker Models on Page 10-70-8.)
Figure 10-70-16
1
P-61729
Inspect the tool retainer pin (Item 1) [Figure 10-70-18]
for wear or damage before installation. To inspect pin
diameter, (See Weekly Inspection on Page 10-60-1.)
1
Figure 10-70-19
P-61730
2
Install the tool (Item 1) [Figure 10-70-16] in the breaker.
Figure 10-70-17
1
1
P-61736
Install the maintenance tool (Item 1) and turn 90° to
expand the band (Item 2) [Figure 10-70-19].
P-61738
Align the notch in the tool with the hole (Item 1) [Figure
10-70-17] in the housing.
10-70-6
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-22
Procedure (External Retaining Band) (Cont'd)
1
Tool Installation For Earlier Breaker Models (Cont’d)
Figure 10-70-20
1
P-61732
Turn the maintenance tool (Item 1) [Figure 10-70-22]
90°and remove the maintenance tool. Turn the band so
that the grease fitting and the retainer pin are not
exposed.
P-61739
Install the tool retainer pin (Item 1) [Figure 10-70-20].
NOTE: Pull the tool outwards to help hold the retainer
pin in place when reinstalling the band.
Figure 10-70-21
1
P-61733
Move the band (Item 1) [Figure 10-70-21] back over the
tool retainer pin.
10-70-7
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-25
Procedure (External Retaining Band) (Cont'd)
Tool Installation For Later Breaker Models
NOTE: For earlier breaker models (See Tool
Installation For Earlier Breaker Models on
Page 10-70-6.)
Figure 10-70-23
1
P-61729
Inspect the tool retainer pin (Item 1) [Figure 10-70-25]
for wear or damage before installation. To inspect pin
diameter, (See Weekly Inspection on Page 10-60-1.)
Figure 10-70-26
1
P-86965
Install the breaker tool (Item 1) [Figure 10-70-23] into the
breaker.
Figure 10-70-24
1
1
P-86963
2
Install the tool retainer pin (Item 1) [Figure 10-70-26].
The breaker tool may need to be rotated so the retainer
pin will install correctly into the breaker and breaker tool.
3
P-86964
Install the maintenance tool (Item 1) and rotate the band
(Item 2) until the tool retainer pin hole (Item 3) [Figure
10-70-24] is visible at the top of the breaker.
10-70-8
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Procedure (External Retaining Band) (Cont'd)
Tool Installation For Later Breaker Models (Cont’d)
Figure 10-70-27
2
1
P-86967
Rotate the maintenance tool (Item 1) and band (Item 2)
[Figure 10-70-27] so the slot in the band is not directly
over the tool retainer pin.
Figure 10-70-28
1
P-86968
Rotate the maintenance tool (Item 1) [Figure 10-70-28]
90° and remove the maintenance tool.
10-70-9
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
WARNING
Procedure (Internal Retaining Band)
Removing The Tool
AVOID INJURY OR DEATH
Securely block up the attachment before working
underneath.
WARNING
W-2795-0409
AVOID BURN INJURY
Breaker tool can be hot after use. Let breaker tool
cool or use gloves when handling tool.
Figure 10-70-30
W-2204-0905
WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
1
P-84989
W-2019-0907
The maintenance tool (Item 1) [Figure 10-70-30] that is
supplied with the breaker will be used to remove the tool
retainer pin. (If this tool is not available, a flat blade screw
driver can be used.)
Figure 10-70-29
Figure 10-70-31
1
1
P-72416A
Raise and block (Item 1) [Figure 10-70-29] the front of
the breaker.
P-84993
Insert the tip of the tool (Item 1) [Figure 10-70-31]
between the breaker frame and the tool retainer band.
Use the tool to rotate the retainer band inside the breaker
frame.
10-70-10
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-34
2
Procedure (Internal Retaining Band) (Cont'd)
Removing The Tool (Cont’d)
Figure 10-70-32
1
1
P-84990
Insert a screwdriver or punch (Item 1) through the access
hole on the bottom of the frame and push the tool
retaining pin (Item 2) [Figure 10-70-34] up and remove
the retaining pin.
P-84984
Figure 10-70-35
Insert the end of the tool (Item 1) [Figure 10-70-32]. Lift
up on the tool to allow the tab on the end of the retainer
band to go under the frame opening.
1
NOTE: Keep tool retaining components and tool
bushings free of dirt and debris.
Figure 10-70-33
P-72415A
2
Using a lifting device, remove the tool (Item 1) [Figure
10-70-35].
1
P-84992A
Continue using the maintenance tool (Item 1) to rotate
the retainer band until the tool retainer pin (Item 2)
[Figure 10-70-33] is exposed.
10-70-11
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-38
Procedure (Internal Retaining Band) (Cont'd)
1
Installing The Tool
Figure 10-70-36
P-84990A
Install the tool retainer pin (Item 1) [Figure 10-70-38] in
the breaker. The tool may need to be rotated for the pin to
fit properly.
1
P-72375
Figure 10-70-39
NOTE: Keep tool retaining components and tool
bushings free of dirt and debris.
Apply grease to the top section of the tool [Figure 10-7036].
1
NOTE: Use a good quality lithium based grease.
Lower quality grease may melt when hot and
reduce the life of the tool and bushing.
Figure 10-70-37
P-84985
1
Using the maintenance tool (Item 1) [Figure 10-70-39],
rotate the retainer band to close the opening.
P-72415A
Install the tool (Item 1) [Figure 10-70-37] in the breaker.
10-70-12
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
REMOVAL AND INSTALLATION OF TOOL (CONT’D)
Figure 10-70-42
Procedure (Internal Retaining Band) (Cont'd)
Installing The Tool (Cont’d)
Figure 10-70-40
1
1
P-84993A
Continue to rotate the retaining band (Item 1) [Figure 1070-42] until it is in the fully closed position.
P-84991
NOTE: Use a good quality lithium based grease.
Lower quality grease may melt when hot and
reduce the life of the tool and bushing.
NOTE: Do not use an electric or pneumatic grease
gun. Over greasing may damage the seal.
NOTE: Failure to push the tool up inside the breaker
before greasing may cause seal damage.
Push the tool in as far as possible. Apply grease (5 - 6
pumps) at the grease fitting (Item 1) [Figure 10-70-40].
Figure 10-70-41
1
P-84984
Using the maintenance tool (Item 1) [Figure 10-70-41],
press the tang of the retaining band so that it is pushed
under the breaker frame.
10-70-13
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
10-70-14
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
ATTACHMENT STORAGE AND RETURN TO SERVICE
Storage
Sometimes it may be necessary to store your Bobcat
attachment for an extended period of time. Below is a list
of items to perform before storage.
If the breaker must be stored in the horizontal position,
remove the tool and thoroughly grease the piston and
lower bushing to prevent corrosion. Cap or cover the
opening. Reinstall the tool only when the breaker is going
to be used.
Return To Service
•
Thoroughly clean the attachment.
•
Lubricate the attachment.
•
Inspect the Bob-Tach wedge mounts, mounting
flange and all welds on the attachment for wear and
damage.
•
Be sure all shields and guards are in place.
•
Lubricate the attachment.
•
Check for loose hardware, missing guards, or
damaged parts.
•
Install and operate attachment, check for correct
function.
•
Replace worn or damaged parts.
•
Check for leaks. Repair as needed.
•
Check for damaged or missing decals. Replace if
necessary.
•
Place the attachment in a dry protected shelter.
•
Place the attachment flat on the ground.
•
Put all controls in NEUTRAL position.
After the Bobcat attachment has been in storage, it is
necessary to follow a list of items to return the
attachment to service.
NOTE: In muddy conditions or to prevent the
attachment from freezing to the ground, put
the attachment on planks or blocks before
removing the attachment from the machine.
Always
relieve
the
hydraulic
pressure
when
disconnecting the breaker from the machine. Plug the
breaker hydraulic ports when in storage. If equipped with
hoses, install caps on the hoses. If equipped with
couplers, connect the couplers together to keep them
clean.
If storing for six months or longer, remove the tool and
thoroughly grease the piston and lower bushing to
prevent corrosion. Reinstall the tool and store the breaker
in the vertical position, with the tool installed into a
holding fixture. The weight of the breaker on the tool
retracts the piston which reduces the possibility of piston
corrosion. Storing vertical prevents any side loading of
the piston seal and increases the seal service life. Check
the nitrogen charge before using the breaker.
If the breaker is stored in a highly corrosive environment,
has high humidity or a coastal location, grease and store
the breaker as recommended above if the storage period
is over thirty days.
10-80-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
10-80-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
HYDRAULIC SYSTEM
DIVERTER VALVE (S/N A00X05151 & BELOW, S/N A00Y06088 & BELOW) . . . . . . . 20-10-1
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-2
Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-3
Disassembly And Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-4
DIVERTER VALVE (S/N A00X05152 - A00X19999, S/N A00Y06089 - A00Y19999) . . 20-11-1
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11-2
Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11-3
Disassembly And Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11-4
20-01
HB Series Hydraulic Breaker Service Manual
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20-02
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05151 & BELOW, S/N
A00Y06088 & BELOW)
Figure 20-10-2
Removal
IMPORTANT
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
1
I-2003-0888
P-88745
Prior to loosening, squarely strike the end of each banjo
fitting utilizing a punch and hammer to avoid distortion of
banjo fitting head.
IMPORTANT
Contain and dispose of any oil leakage in an
environmentally safe manner.
I-2066-0395
Loosen banjo fittings (Item 1) [Figure 20-10-2].
Figure 20-10-3
NOTE: When using the HB880 (S/N A00X19999 &
Below) or HB980 (S/N A00Y19999 & Below)
breakers on A770, S630, S650, S750, S770,
T630, T650, T750 and T770 model loaders or
E60 excavator (S/N AGSZ11320 & Below), the
breaker must be equipped with a diverter
valve kit. Breakers with a higher serial number
are equipped with an internal diverter valve
and do not require the external diverter valve
kit.
1
Figure 20-10-1
P-88746
1
To remove the diverter valve from the breaker, turn banjo
fittings (Item 1) [Figure 20-10-3] one half to one full turn,
alternating between fittings until diverter valve is free
from breaker.
2
1
P-88747
NOTE: Mark the hoses before removing to identify
proper location.
Disconnect hydraulic hoses (Item 1) from the diverter
valve (Item 2) [Figure 20-10-1].
20-10-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05151 & BELOW, S/N
A00Y06088 & BELOW) (CONT’D)
Figure 20-10-6
Installation
NOTE: When using the HB880 (S/N A00X19999 &
Below) or HB980 (S/N A00Y19999 & Below)
breakers on A770, S630, S650, S750, S770,
T630, T650, T750 and T770 model loaders or
E60 excavator (S/N AGSZ11320 & Below), the
breaker must be equipped with a diverter
valve kit. Breakers with a higher serial number
are equipped with an internal diverter valve
and do not require the external diverter valve
kit.
1
P-88745
Figure 20-10-4
Tighten banjo fittings (Item 1) [Figure 20-10-6] to 190
N•m (140 ft-lb) torque.
Figure 20-10-7
2
1
1
2
P-88744
1
Prior to installing the diverter valve, tighten breaker
fittings (Item 2) [Figure 20-10-4] to 373 N•m (275 ft-lb)
torque.
Align the diverter valve banjo fittings (Item 1) with the
breaker fittings (Item 2) [Figure 20-10-4].
P-88747
Connect hydraulic hoses (Item 1) onto the diverter valve
(Item 2) [Figure 20-10-7]. Tighten hoses to 114 N•m (84
ft-lb) torque.
Figure 20-10-5
1
P-88746
To install the diverter valve onto the breaker, turn banjo
fittings (Item 1) [Figure 20-10-5] one half to one full turn,
alternating between fittings until tight.
20-10-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05151 & BELOW, S/N A00Y06088 & BELOW) (CONT’D)
Parts Identification
1. Valve Diverter
2. Valve Block
3. Spool, Pilot
4. Orifice
5. Ring Retaining
6. Fitting, Banjo
1
7. O-ring
8. O-ring
9. O-ring
10. Back-up Ring
11. Back-up Ring
12. Ring Retainer
13. Seal Kit
7
5
9
11
4
2
6
7
9
8
11
10
12
3
13
13
13
6
13
13
8
13
13
10
12
P-94964
20-10-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Figure 20-10-9
DIVERTER VALVE (S/N A00X05151 & BELOW, S/N
A00Y06088 & BELOW) (CONT’D)
Disassembly And Assembly
2
2
WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-0907
1
1
P-96039
Remove O-rings (Item 1) and back-up rings (Item 2)
[Figure 20-10-9] on both banjo fittings.
Installation: Install O-rings and back-up rings.
IMPORTANT
Figure 20-10-10
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
I-2003-0888
Figure 20-10-8
1
2
2
P-96038
Remove the pilot spool (Item 1) [Figure 20-10-10].
1
1
Installation: Install the pilot spool. Tighten to 34 N•m (25
ft-lb) torque.
P-96042
Remove the retainer rings (Item 1) from the banjo fittings
(Item 2) [Figure 20-10-8], tap or push the banjo fittings to
remove from the valve block.
Installation: Install banjo fittings into the valve block and
install retainer rings.
NOTE: Always use new O-rings and seals when
assembling the diverter valve. Put a small
amount of grease on all the O-rings and seals
for easier assembly.
20-10-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05151 & BELOW, S/N
A00Y06088 & BELOW) (CONT’D)
Disassembly And Assembly (Cont’d)
Figure 20-10-11
2
2
2
1
P-96040
Remove O-rings (Item 1) and back-up rings (Item 2)
[Figure 20-10-11] from the pilot spool.
Installation: Install O-rings and back-up rings.
Figure 20-10-12
2
1
3
P-96054
P-96044
Remove the fitting (Item 1) and the remove the O-ring
from the fitting. Remove retaining ring (Item 2) and orifice
(Item 3) [Figure 20-10-12].
Installation: Install orifice and retaining ring. Install new
O-ring and install fitting.
20-10-5
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
20-10-6
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05152 - A00X19999, S/N
A00Y06089 - A00Y19999)
Figure 20-11-2
Removal
IMPORTANT
2
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
1
I-2003-0888
P102550
To aid removal, the jam nuts (Item 1) [Figure 20-11-2]
should to be backed out until seated against the snap
ring.
IMPORTANT
Contain and dispose of any oil leakage in an
environmentally safe manner.
I-2066-0395
NOTE: When using the HB880 (S/N A00X19999 &
Below) or HB980 (S/N A00Y19999 & Below)
breakers on A770, S630, S650, S750, S770,
T630, T650, T750 and T770 model loaders or
E60 excavator (S/N AGSZ11320 & Below), the
breaker must be equipped with a diverter
valve kit. Breakers with a higher serial number
are equipped with an internal diverter valve
and do not require the external diverter valve
kit.
Prior to loosening, squarely strike the end of each banjo
fitting utilizing a punch and hammer to avoid distortion of
banjo fitting head.
Loosen banjo fittings (Item 2) [Figure 20-11-2].
Figure 20-11-3
1
Figure 20-11-1
1
2
P102551
To remove the diverter valve from the breaker, turn banjo
fittings (Item 1) [Figure 20-11-3] one half to one full turn,
alternating between fittings until diverter valve is free
from breaker.
1
P102549
NOTE: Mark the hoses before removing to identify
proper location.
Disconnect hydraulic hoses (Item 1) from the diverter
valve (Item 2) [Figure 20-11-1].
20-11-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05152 - A00X19999, S/N
A00Y06089 - A00Y19999) (CONT’D)
Tighten jam nuts (Item 2) [Figure 20-11-5] to 190 N•m
(140 ft-lb) torque.
Installation
Hose Installation For Use With Loaders And Excavators
(Except E60)
NOTE: When using the HB880 (S/N A00X19999 &
Below) or HB980 (S/N A00Y19999 & Below)
breakers on A770, S630, S650, S750, S770,
T630, T650, T750 and T770 model loaders or
E60 excavator (S/N AGSZ11320 & Below), the
breaker must be equipped with a diverter
valve kit. Breakers with a higher serial number
are equipped with an internal diverter valve
and do not require the external diverter valve
kit.
Figure 20-11-6
1
3
Figure 20-11-4
1
P102549
Install hydraulic fittings (Item 1) [Figure 20-11-6]. Tighten
hydraulic fittings to 114 N•m (84 ft-lb) torque.
3
1
2
NOTE: Hydraulic fittings may already be installed on
diverter valve from supplier.
Install hydraulic hoses (Item 2) [Figure 20-11-6]. Tighten
hoses to 114 N•m (84 ft-lb) torque.
Hose Installation For Use With E60 Excavators (S/N
AGSZ11320 & Below)
P102551
Figure 20-11-7
Align the diverter valve banjo fittings (Item 1) with the
breaker power cell ports (Item 2) [Figure 20-11-4].
To install the diverter valve onto the breaker, turn banjo
fittings (Item 3) [Figure 20-11-4] one half to one full turn,
alternating between fittings until tight.
2
2
Figure 20-11-5
1
P102616
1
Install hydraulic fittings (Item 1) [Figure 20-11-7]. Tighten
hydraulic fittings to 114 N•m (84 ft-lb) torque.
2
NOTE: Hydraulic fittings may already be installed on
diverter valve from supplier.
P102550
Install hydraulic hoses (Item 2) [Figure 20-11-7]. Tighten
hoses to 114 N•m (84 ft-lb) torque.
Tighten banjo fittings (Item 1) [Figure 20-11-5] to 114
N•m (84 ft-lb) torque.
20-11-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05152 - A00X19999, S/N A00Y06089 - A00Y19999) (CONT’D)
Parts Identification
1. Valve Block
2. Logic Element
3. Orifice
4. Ring Retaining
5. Fitting, Banjo
6. O-ring
7. O-ring
8. O-ring
9. Back-up Ring
10. Back-up Ring
11. Jam Nut
12. Ring Retaining
13. Lock Ring
14. Cap Screw
15. Fitting, Boss - Tube
6
16. Seal Kit
5
10
8
1
15
4
3
14
13
16
7
9
12
2
11
NA2993S
20-11-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05152 - A00X19999, S/N
A00Y06089 - A00Y19999) (CONT’D)
NOTE: Always use new O-rings and seals when
assembling the diverter valve. Put a small
amount of grease on all the O-rings and seals
for easier assembly.
Disassembly And Assembly
Figure 20-11-9
WARNING
2
2
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-0907
1
1
P102553
Remove O-rings (Item 1) and back-up rings (Item 2)
[Figure 20-11-9] on both banjo fittings.
IMPORTANT
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
Installation: Install O-rings and back-up rings.
Figure 20-11-10
I-2003-0888
Figure 20-11-8
2
3
2
1
3
1
2
3
P102554
Remove the retaining screw (Item 1) and locking collar
(Item 2) [Figure 20-11-10].
1
Remove the pilot spool (Item 3) [Figure 20-11-10].
P102552
Remove the snap rings (Item 1) and locknuts (Item 2)
from the banjo fittings (Item 3) [Figure 20-11-8], tap or
push the banjo fittings to remove from the valve block.
Installation: Install banjo fittings into the valve block and
install jam nuts and snap rings.
Installation: Install the pilot spool. Tighten to 34 N•m (25
ft-lb) torque. Install locking collar. Clean threads of
locking collar retaining screw and mating threads in the
housing. Apply medium strength Loctite® to retaining
screw, install and tighten to 12 N•m (9 ft-lb) torque.
20-11-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
DIVERTER VALVE (S/N A00X05152 - A00X19999, S/N
A00Y06089 - A00Y19999) (CONT’D)
Disassembly And Assembly (Cont’d)
Figure 20-11-11
2
2
2
1
P-96040
Remove O-rings (Item 1) and back-up rings (Item 2)
[Figure 20-11-11] from the pilot spool.
Installation: Install O-rings and back-up rings.
Figure 20-11-12
3
1
P102555
2
P102556
Remove the fitting (Item 1) and the remove the O-ring
from the fitting. Remove retaining ring (Item 2) and orifice
(Item 3) [Figure 20-11-12].
Installation: Install orifice and retaining ring. Install new
O-ring and install fitting.
20-11-5
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
20-11-6
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
MAINFRAME
BREAKER HOUSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-10-1
Disassembly And Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-10-1
BREAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-1
Parts Identification (Without Internal Flow Diverter) . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-1
Parts Identification (With Internal Flow Diverter) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-2
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-3
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-11
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-13
30-01
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
30-02
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER HOUSING
Figure 30-10-2
Disassembly And Assembly
1
WARNING
1
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
2
P-61716
W-2019-0907
Remove the tool. (See REMOVAL AND INSTALLATION
OF TOOL on Page 10-70-1.)
Remove the two hoses (Item 1) and elbow fittings (Item
2) [Figure 30-10-2].
Figure 30-10-1
Installation: Tighten the hoses to 63 N•m (84 ft-lb)
torque.
1
Figure 30-10-3
1
1
2
1
P-63185
Remove the three bolts, washers and nuts (Item 1) and
bracket (Item 2) [Figure 30-10-1].
Installation: Tighten the bolts to 370 N•m (270 ft-lb)
torque.
P-63183
Remove the two fittings (Item 1) [Figure 30-10-3].
Installation: Tighten the fittings to 189 N•m (140 ft-lb)
torque.
30-10-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER HOUSING (CONT’D)
Figure 30-10-6
Disassembly And Assembly (Cont’d)
Figure 30-10-4
2
1
1
P-63941
1
1
Remove the urethane bushing (Item 1) [Figure 30-10-6]
from the breaker housing.
P-63867
Remove the six bolts, washers and nuts (Item 1) and
mounting flange (Item 2) [Figure 30-10-4].
NOTE: The urethane bushing must be replaced after
every 500 hours of service.
Figure 30-10-7
Installation: Tighten the bolts to 370 N•m (270 ft-lb)
torque.
Figure 30-10-5
1
1
2
P-63939
Remove the washer (Item 1) [Figure 30-10-7] from the
breaker housing.
P-63897
Install a hoist and lifting chain (Item 1) to lift the hydraulic
breaker (Item 2) [Figure 30-10-5]. Raise the hoist and
put the hydraulic breaker upright in a stand as shown.
30-10-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER HOUSING (CONT’D)
Figure 30-10-10
Disassembly And Assembly (Cont’d)
Figure 30-10-8
2
1
1
P-63865
Remove the bushing (Item 1) [Figure 30-10-10] from the
housing.
B-23350
Figure 30-10-11
Assembly: Install the washer (Item 1) and bushing (Item
2) [Figure 30-10-8].
NOTE: After the breaker has been reassembled and
the mounting frame bolts torqued, if the
breaker can be rotated in the mounting frame
this indicates the upper and lower bushings
(Item 2) [Figure 30-10-8] are damaged.
Replace both the upper and lower bushings if
this condition exists.
1
Figure 30-10-9
P-63788
2
1
Remove the urethane bushing (Item 1) [Figure 30-10-11]
from the end of the housing.
1
3
NOTE: The urethane bushing must be replaced after
every 500 hours of service.
P-65004
Install lifting eyes (Item 1) and chain (Item 2) [Figure 3010-9].
Remove the power unit (Item 3) [Figure 30-10-9] from
the breaker housing.
30-10-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER HOUSING (CONT’D)
Disassembly And Assembly (Cont’d)
Figure 30-10-12
1
B-23349
Assembly: Install the urethane bushing (Item 1) [Figure
30-10-12] as shown.
NOTE: Replace the bushing every 500 hours of
service.
NOTE: After the breaker has been reassembled and
the mounting frame bolts torqued, if the
breaker can be rotated in the mounting frame
this indicates the upper and lower bushings
(Item 1) [Figure 30-10-12] are damaged.
Replace both the top and bottom bushings if
this condition exists.
30-10-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER
Parts Identification (Without Internal Flow Diverter)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
Regulator Ring
Plug
Valve
Bolt
Cover
O-ring
Diaphragm
Nitrogen Chamber
Cover
Seal
Distributor Housing
Sleeve
Distributor
Piston
Distributor Box
Pin
Bushing
Wiper
Fitting
Housing
4
1
2
3
5
6
7
8
6
9
10
10
6
1
11
12
13
6
14
16
15
6
6
17
6
10
18
6
19
20
6
B-23340
30-20-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Parts Identification (With Internal Flow Diverter)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
Plug
Valve
Bolt
Cover
Diaphragm
O-Ring
Nitrogen Chamber
Cover
Relief Valve
Ring
Piston Cover
Seal
Regulator Ring
Distributor Cover
Distributor
Distibutor Box
Piston
Pin
Cylinder
Seal Casing
Scraper Seal
1
3
2
4
5
6
7
6
8
9
11
10
12
13
14
12
15
16
6
17
18
19
12
6
6
6
21
20
NA12027
30-20-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-2
Disassembly
One of the following extraction tubes are needed for
disassembly.
HB280-P/N 86632908-Extraction tube
HB380-P/N 86632890-Extraction tube
HB580-P/N 86630530-Extraction tube
HB680-P/N 86632882-Extraction tube
HB880-P/N 86632874-Extraction tube
HB980-P/N 86632866-Extraction tube
HB1180-P/N 86639879-Extraction tube
1
NOTE: These extraction tubes can be purchased
through your dealer or can be made locally.
For the tube dimensions, See [Figure 30-20-15
on Page 7].
Remove the breaker frame. (See Disassembly And
Assembly on Page 30-10-1.)
P-63791
Using a small shaft, press down on the valve (Item 1) and
discharge the nitrogen chamber. Remove the valve
assembly (Item 1) [Figure 30-20-2].
NOTE: If oil is detected in the nitrogen as it is being
released,
this
indicates
a
damaged
diaphragm.
Figure 30-20-1
1
P-63790
With the power unit on a secure work surface, remove the
plug (Item 1) [Figure 30-20-1] from the charge valve.
NOTE: If the plug (Item 1) [Figure 30-20-1] is tight, tap
the end of the plug with a hammer before
removing.
WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-0907
30-20-3
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Figure 30-20-5
BREAKER (CONT’D)
Disassembly (Cont’d)
Figure 30-20-3
1
P-63793
1
1
Remove the nitrogen chamber cover (Item 1) [Figure 3020-5].
N-23372
Figure 30-20-6
Remove the O-rings (Item 1) [Figure 30-20-3] from the
valve body and valve stem.
2
Figure 30-20-4
2
1
1
2
P-63794
Remove the nitrogen chamber assembly (Item 1) [Figure
30-20-6].
P-63792
Remove the eight O-rings (Item 2) [Figure 30-20-6] and
discard.
Remove the twelve bolts (Item 1) [Figure 30-20-4].
NOTE: The bolts must be replaced after the third time
that they are removed.
30-20-4
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-9
Disassembly (Cont’d)
Figure 30-20-7
1
P-72103
The hydraulic cartridge extraction tool [Figure 30-20-9] is
recommended for the disassembly of the HB1180
hydraulic breaker.
P-63795
Remove the O-ring (Item 1) [Figure 30-20-7] and
discard.
NOTE: The Hydraulic Cartridge Extraction Tool, P/N
86642352, can be purchased through your
dealer.
Figure 30-20-8
Figure 30-20-10
1
1
2
P-63796
P-72104
Remove the diaphragm (Item 1) [Figure 30-20-8].
The tool being used in [Figure 30-20-9] is only for the
HB1180 model.
Before installation, verify that the plastic block (Item 1) is
aligned with the nut insert (Item 2) [Figure 30-20-10].
30-20-5
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-13
Disassembly (Cont’d)
Figure 30-20-11
1
P-72105
2
1
Push the internal breaker components from the housing
approximately 152 mm (6 in) by turning the bolt head
(Item 1) [Figure 30-20-13] clockwise.
P-72100
Align the notch (Item 1) in the plastic block with the
retaining pin hole (Item 2) [Figure 30-20-11].
NOTE: Do not use an impact wrench on the
extraction tool. Excessive heat build up could
occur resulting in damage to the tool.
Figure 30-20-12
Figure 30-20-14
1
1
P-72101
P-63797
Slide the extraction tool into the base of the housing until
the notch in the plastic block is aligned with the retaining
pin hole. Install the retaining pin (Item 1) [Figure 30-2012].
Push the internal breaker components from the housing
approximately 152 mm (6 in) using the extraction tube
(Item 1) [Figure 30-20-14].
NOTE: The tube must fit over the piston shaft. See
the chart [Figure 30-20-15] for correct size.
The tube ends must be square with the tube
walls and must be free of burrs.
30-20-6
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-17
WITHOUT INTERNAL FLOW DIVERTER
Disassembly (Cont’d)
Figure 30-20-15
1
A
B
1
P-63799
C
Remove the seal (Item 1) [Figure 30-20-17] from the
piston cover and discard.
MS2106
Figure 30-20-18
HB680
HB880
WITH INTERNAL FLOW DIVERTER
HB280
HB380
HB580
HB980
HB1180
A= Wall
Thickness
5 mm
0.19 in
4,7 mm
0.18 in
4,7 mm 3,9 mm 3,9 mm 3,9 mm
0.18 in 0.16 in 0.16 in 0.16 in
5,56 mm
0.219 in
B= Outside
Diameter
50 mm
2.0 in
54 mm 60,3 mm 62 mm
2.12 in 2.38 in 2.44 in
C= Wall
Length
600 mm 597 mm 603 mm 686 mm 749 mm 787 mm 939,8 mm
23.5 in 23.5 in 23.75 in 27.0 in 29.5 in 31.0 in
37.0 in
70 mm
2.75 in
1
83 mm 87,38 mm
3.25 in
3.44 in
2
Figure 30-20-16
3
1
NA12028
Remove the relief valve (Item 1) [Figure 30-20-18].
Remove the seal (Item 2) from the piston cover (Item 3)
[Figure 30-20-18].
P-63798
Remove the piston cover (Item 1) [Figure 30-20-16] from
the breaker.
30-20-7
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-21
Disassembly (Cont’d)
2
Figure 30-20-19
1
P-63801
1
Remove the distributor assembly (Item 1) [Figure 30-2021].
P-63800
Remove the two piece seal (Item 1) [Figure 30-20-19]
and discard.
NOTE: Mark the location of the pin (Item 2) [Figure 3020-21] for correct assembly.
Figure 30-20-22
Using the tube, continue to push the components from
the housing.
1
Figure 30-20-20
2
P-63803
1
P-63836
Remove the distributor box (Item 1) and piston (Item 2)
[Figure 30-20-22].
Remove the regulator ring (Item 1) [Figure 30-20-20].
30-20-8
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-25
Disassembly (Cont’d)
Figure 30-20-23
1
1
P-63898
Using downward pressure, separate the distributor
assembly [Figure 30-20-25].
P-63804
Figure 30-20-26
Remove the five O-rings (Item 1) [Figure 30-20-23] from
the distributor box and discard.
Figure 30-20-24
1
2
1
P-63802
Separate the distributor assembly and remove the O-ring
(Item 1) [Figure 30-20-26] and discard.
P-63968
Put the piston (Item 1) in the vertical position and install
the distributor assembly (Item 2) [Figure 30-20-24].
30-20-9
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Disassembly (Cont’d)
Figure 30-20-27
1
P-63805
Remove the bushing assembly (Item 1) [Figure 30-2027].
Figure 30-20-28
2
1
3
P-63806
Remove the O-ring (Item 1), seal (Item 2) and wiper (Item
3) [Figure 30-20-28] and discard.
30-20-10
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-31
Inspection
Clean all parts in solvent and dry with compressed air.
1
Deep scratches and / or excessive wear can cause poor
performance. Replace all components that are damaged
or show excessive wear or deep scratches. Light
scratches may be polished out using a fine hand stone or
sandpaper. Carefully clean all parts after polishing.
Figure 30-20-29
P-63811
1
Inspect the nitrogen chamber (Item 1) [Figure 30-20-31]
for cracks or damage.
Figure 30-20-32
WITHOUT INTERNAL FLOW DIVERTER
P-63807
Inspect the housing mounting surface (Item 1) [Figure
30-20-29] for cracks or damage.
Figure 30-20-30
1
P-63799
1
Inspect the piston cover (Item 1) [Figure 30-20-32] for
cracks or damage.
P-63809
Inspect the nitrogen chamber cover (Item 1) [Figure 3020-30] for cracks or damage.
30-20-11
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-35
Inspection (Cont’d)
Figure 30-20-33
WITH INTERNAL FLOW DIVERTER
1
2
P-63814
Inspect the distributor assembly [Figure 30-20-35] for
any cracks or damage.
NA12028
Figure 30-20-36
Inspect the relief valve (Item 1) [Figure 30-20-33].
Inspect the piston cover (Item 2) [Figure 30-20-33].
Figure 30-20-34
1
P-63815
Inspect the distributor box (Item 1) [Figure 30-20-36] for
cracks or damage.
P-63813
Inspect the surface on both sides of the regulator ring
[Figure 30-20-34] for cracks or damage.
NOTE: The regulator ring must be replaced after 500
hours of service.
30-20-12
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-38
Assembly
2
1
Figure 30-20-37
A
1
P-65005
2
1
Install the O-ring (Item 1) and seal (Item 2) [Figure 3020-38]
P-63837
Figure 30-20-39
Replace the piston if the striking area (Item 1) [Figure
30-20-37] is cracked or deformed.
WITHOUT INTERNAL FLOW DIVERTER
Inspect the outside diameters of the piston (Item 2)
[Figure 30-20-37].
Model
Minimum Length - A
HB280
HB380
HB580
HB680
HB880
HB980
HB1180
293 mm (11.54 in)
309 mm (12.165 in)
314 mm (12.362 in)
340 mm (13.386 in)
382 mm (15.039 in)
408 mm (16.063 in)
467,6 mm (18.409 in)
1
P-63799
Measure the length of the piston (A) [Figure 30-20-37]. If
the length is shorter than indicated in the above chart,
replace the piston.
Install the outer seal (Item 1) [Figure 30-20-39] on the
piston cover.
Apply the gray lubricant that is provided with the seal kit
on all internal components. If lubricant is not provided
use assembly lube.
30-20-13
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-41
Assembly (Cont’d)
1
Figure 30-20-40
WITH INTERNAL FLOW DIVERTER
1
3
2
P-63817
Install the regulator ring (Item 1) [Figure 30-20-41] onto
the piston cover.
NA12028S
Figure 30-20-42
Install the relief valve (Item 1) [Figure 30-20-40].
Install the seal (Item 2) on the piston cover (Item 3)
[Figure 30-20-40].
2
1
B-23343
NOTE: The beveled edge (Item 1) of the regulator ring
must be installed on the piston cover (Item 2)
[Figure 30-20-42] in the position shown.
30-20-14
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-45
Assembly (Cont’d)
Figure 30-20-43
1
1
2
3
2
P-63820
Install the distributor assembly (Item 1) onto the
distributor cover (Item 2) [Figure 30-20-45].
P-63818
Figure 30-20-46
Install the sleeve, (Item 1) into the distributor housing
(Item 2) [Figure 30-20-43].
NOTE: The position of the beveled surface (Item 3) of
the sleeve must be in the position shown. The
sleeve (Item 1) must rotate inside of the
distributor housing (Item 2) [Figure 30-20-43].
1
Figure 30-20-44
1
2
2
3
P-63819
Install the upper ring (Item 1) onto the distributor
assembly (Item 2) [Figure 30-20-44].
Install the O-ring (Item 3) [Figure 30-20-44]. Check that
the distributor moves freely inside the distribution box.
P-63821
Install the piston (Item 1) into the distributor / cover
assembly (Item 2) [Figure 30-20-46].
30-20-15
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Figure 30-20-48
BREAKER (CONT’D)
Assembly (Cont’d)
Figure 30-20-47
6
1
1
2
3
4
P-63823
5
Figure 30-20-49
P-65006
Install the four O-rings onto the distributor box, starting
with the first O-ring (Item 1) followed by the second Oring (Item 2), third O-ring (Item 3) and fourth O-ring (Item
4) [Figure 30-20-47].
Turn the distributor box over and install the fifth O-ring
(Item 5) [Figure 30-20-47].
1
Install the pin (Item 6) [Figure 30-20-47] into the position
marked earlier.
NOTE: The pin (Item 6) [Figure 30-20-47] must be
installed in the blind hole. The other three
holes are through holes.
P-63824
Slide the distributor box onto the piston and align the pin
(Item 1) [Figure 30-20-48] on the distributor box with the
hole (Item 1) [Figure 30-20-49] in the distributor / cover
assembly.
30-20-16
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-52
Assembly (Cont’d)
Figure 30-20-50
2
1
2
3
1
P-65007
Install the wiper seal (Item 1) and inner seal (Item 2)
[Figure 30-20-50] onto the bushing as shown.
Install the O-ring (Item 3) [Figure 30-20-50] onto the
bushing.
P-63826
Figure 30-20-51
Apply lubricant to the breaker components [Figure 3020-52].
Figure 30-20-53
1
1
P-63825
Install the bushing assembly (Item 1) [Figure 30-20-51]
onto the piston.
P-63827
Apply lubricant to the inside surface (Item 1) of the
housing [Figure 30-20-53].
30-20-17
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-55
Assembly (Cont’d)
Figure 30-20-54
1
2
2
1
P-63835
Raise the breaker housing and align the housing (Item 1)
with the breaker components (Item 2) [Figure 30-20-55].
P-63828
Install a pin (Item 1), lifting strap and hoist (Item 2)
[Figure 30-20-54] through the tool retaining pin hole in
the housing in the arrangement shown.
Slowly lower the housing (Item 1) onto the breaker
components (Item 2) [Figure 30-20-55] while tapping the
top end of the housing with a rubber mallet. Continue
until the housing is fully lowered.
30-20-18
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-58
1
Assembly (Cont’d)
Figure 30-20-56
2
3
3
1
1
P-63829A
2
3
3
Apply silicone to the top surface of the diaphragm (Item
1) only. Do not apply silicone to the bottom surface (Item
2) [Figure 30-20-58].
P-63832
Lay the breaker assembly (Item 1) on its side on a wood
block (Item 2) [Figure 30-20-56].
NOTE: Do not use hydraulic oil on the diaphragm.
Figure 30-20-59
Install the eight O-rings (Item 3) [Figure 30-20-56].
Figure 30-20-57
1
P-63830
Install the diaphragm [Figure 30-20-59].
P-63833
Install the O-ring (Item 1) [Figure 30-20-57] on the
nitrogen chamber.
30-20-19
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Figure 30-20-62
BREAKER (CONT’D)
Assembly (Cont’d)
Figure 30-20-60
1
B-23341
HB 380 and 580: Tighten the twelve bolts to 41 N•m (30
ft-lb) torque in the sequence shown [Figure 30-20-62].
P-63831
HB 680, 880, 980 and 1180: Tighten the twelve bolts to
99 N•m (73 ft-lb) torque in the sequence shown [Figure
30-20-62].
Install the nitrogen chamber (Item 1) [Figure 30-20-60].
Figure 30-20-61
NOTE: A long bar will need to be installed through
the tool retaining pin hole to keep the breaker
from rotating while torquing the bolts.
2
1
Figure 30-20-63
2
2
P-63791
Install the nitrogen chamber cover (Item 1) and bolts
(Item 2) [Figure 30-20-61].
NOTE: Apply the gray lubricant (that is supplied with
the seal kit) to the threads of the bolts before
installation.
1
1
N-23372
Apply silicone oil to the O-rings (Item 1) [Figure 30-2063]. Install the O-rings on the valve body and valve stem.
30-20-20
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
BREAKER (CONT’D)
Figure 30-20-66
Assembly (Cont’d)
Figure 30-20-64
1
P-63790
2
1
Install the plug (Item 1) [Figure 30-20-66] into the charge
valve to keep out contamination.
N-23376
Install the valve stem (Item 1) into the valve body (Item 2)
[Figure 30-20-64].
Reinstall the breaker into the housing. (See Disassembly
And Assembly on Page 30-10-1.)
The breaker nitrogen chamber must be recharged. (See
Nitrogen Chamber on Page 10-60-4.)
Figure 30-20-65
1
P-63791
Install the valve assembly (Item 1) [Figure 30-20-65].
30-20-21
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
30-20-22
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SPECIFICATIONS
SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-10-1
Hydraulic Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-10-1
(HB280) HYDRAULIC BREAKER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .SPEC-20-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-20-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-20-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-20-1
(HB380) HYDRAULIC BREAKER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .SPEC-21-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-21-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-21-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-21-1
(HB580) HYDRAULIC BREAKER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .SPEC-22-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-22-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-22-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-22-1
(HB680) HYDRAULIC BREAKER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .SPEC-23-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-23-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-23-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-23-1
(HB880) HYDRAULIC BREAKER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .SPEC-24-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-24-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-24-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-24-1
(HB980) HYDRAULIC BREAKER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .SPEC-25-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-25-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-25-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-25-1
(HB1180) HYDRAULIC BREAKER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . .SPEC-26-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-26-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-26-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-26-1
TORQUE SPECIFICATIONS FOR BOLTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-30-1
Torque For General SAE Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-30-1
Torque For General Metric Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-30-2
HYDRAULIC CONNECTION SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-1
O-ring Face Seal Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-1
Straight Thread O-ring Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-1
Tubelines And Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-1
Flare Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-2
Port Seal Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-2
SPEC-01
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Certain specification(s) are based on engineering calculations and are not actual measurements. Specification(s)
are provided for comparison purposes only and are subject to change without notice. Specification(s) for your
individual Bobcat equipment will vary based on normal variations in design, manufacturing, operating conditions,
and other factors.
SPEC-02
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SCHEMATICS
Hydraulic Schematic
P-96134
SPEC-10-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SPEC-10-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
(HB280) HYDRAULIC BREAKER SPECIFICATIONS
Dimensions
•
All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.
•
Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.
250 mm
(9.84 in)
200 mm
(7.87 in)
866,3 mm
(34.11 in)
MS2367
Performance
Breaker Weight 
With X-Change Mount
58 kg (127 lb)
66 kg (144.67 lb)
Blow Rate
Soft Ground
1120 bpm
Hard Ground
1290 bpm
Operating Pressure
123,0 kPa (120,7 bar) (1750 psi)
Bit Diameter
37 mm (1.46 in)
Bit Working Length
269 mm (10.6 in)
Bits Available
Nail
Inline Chisel
Cross Cut Chisel
Asphalt Chisel
Blunt
Hydraulic System
Hydraulic Flow
13 - 23 L/min (3.4 - 6.1 U.S. gpm)
SPEC-20-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SPEC-20-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
(HB380) HYDRAULIC BREAKER SPECIFICATIONS
Dimensions
•
All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.
•
Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.
330 mm
(13.0 in)
231 mm
(9.1 in)
1067 mm
(42.0 in)
MS2088
Performance
Breaker Weight 
With X-Change Mount
88 kg (195 lb)
102 kg (224 lb)
Blow Rate
Soft Ground
1400 bpm
Hard Ground
1600 bpm
Operating Pressure
123,0 kPa (120,7 bar) (1750 psi)
Bit Diameter
45 mm (1.77 in)
Bit Working Length
279 mm (11.0 in)
Bits Available
Conical
Moil
Nail
Inline Chisel
Cross Cut Chisel
Asphalt Chisel
Blunt
Tamping Pad
Hydraulic System
Hydraulic Flow
15 - 30 L/min (4.0 - 7.9 U.S. gpm)
SPEC-21-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SPEC-21-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
(HB580) HYDRAULIC BREAKER SPECIFICATIONS
Dimensions
•
All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.
•
Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.
340 mm
(13.4 in)
231 mm
(9.1 in)
1097 mm
(43.2 in)
MS2088
Performance
Breaker Weight 
With X-Change Mount
111 kg (245 lb)
124 kg (274 lb)
Blow Rate
Soft Ground
1220 bpm
Hard Ground
1350 bpm
Operating Pressure
123,0 kPa (120,7 bar) (1750 psi)
Bit Diameter
47 mm (1.85 in)
Bit Working Length
292 mm (11.5 in)
Bits Available
Conical
Moil
Nail
Inline Chisel
Cross Cut Chisel
Asphalt Chisel
Blunt
Tamping Pad
Hydraulic System
Hydraulic Flow
17 - 34,8 L/min (4.5 - 9.2 U.S. gpm)
SPEC-22-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SPEC-22-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
(HB680) HYDRAULIC BREAKER SPECIFICATIONS
Dimensions
•
All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.
•
Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.
452 mm
(17.8 in)
320 mm
(12.6 in)
940 mm
(37.0 in)
1262 mm
(49.7 in)
1194 mm
(47.0 in)
MS-20887
Performance
Breaker Weight 
With X-Change Mount 
With Bob-Tach Mount
With CII Mount
152 kg (335 lb)
193 kg (426 lb)
 224 kg (494 lb)
226 kg (499 lb)
Blow Rate
Soft Ground
780 - 1220 bpm
Hard Ground
860 - 1340 bpm
Operating Pressure
123,0 kPa (120,7 bar) (1750 psi)
Bit Diameter
55,1 mm (2.17 in)
Bit Working Length
330 mm (13.0 in)
Bits Available
Conical
Moil
Nail
Inline Chisel
Cross Cut Chisel
Asphalt Chisel
Blunt
Tamping Pad
Hydraulic System
Hydraulic Flow
25 - 50 L/min (6.6 - 13.2 U.S. gpm)
SPEC-23-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SPEC-23-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
(HB880) HYDRAULIC BREAKER SPECIFICATIONS
Dimensions
•
All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.
•
Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.
325 mm
(12.6 in)
475 mm
(18 in)
1152 mm
(45.4 in)
1375 mm
(54 in)
1316 mm
(51.8 in)
MS-2086A
Performance
Breaker Weight 
With X-Change Mount 
With Loader Mount
220 kg (485 lb)
263 kg (580 lb)
334 kg (736 lb)
Blow Rate
Soft Ground
755 - 1150 bpm
Hard Ground
860 - 1310 bpm
Operating Pressure
123,0 kPa (120,7 bar) (1750 psi)
Bit Diameter
65 mm (2.56 in)
Bit Working Length
330 mm (13.0 in)
Bits Available
Conical
Moil
Nail
Inline Chisel
Cross Cut Chisel
Asphalt Chisel
Blunt
Tamping Pad
Hydraulic System
Hydraulic Flow
30 - 65 L/min (7.9 - 17.2 U.S. gpm)
SPEC-24-1
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
SPEC-24-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
(HB980) HYDRAULIC BREAKER SPECIFICATIONS
Dimensions
•
All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.
•
Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.
320 mm
(12.6 in)
457 mm
(18.0 in)
1153 mm
(45.4 in)
1448 mm
(57.0 in)
1392 mm
(54.8 in)
MS-2086
Performance
Breaker Weight 
With X-Change Mount 
With Loader Mount
284 kg (625 lb)
327 kg (720 lb)
397 kg (876 lb)
Blow Rate
Soft Ground
855 - 1060 bpm
Hard Ground
1170 - 1450 bpm
Operating Pressure
123,1 kPA (120,7 bar) (1750 psi)
Bit Diameter
72,1 mm (2.84 in)
Bit Working Length
356 mm (14.0 in)
Bits Available
Conical
Moil
Nail
Inline Chisel
Cross Cut Chisel
Asphalt Chisel
Blunt
Tamping Pad
Hydraulic System
Hydraulic Flow
45 - 80 L/min (11.9 - 21.1 U.S. gpm)
SPEC-25-1
HB Series Hydraulic Breaker Service Manual
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SPEC-25-2
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
(HB1180) HYDRAULIC BREAKER SPECIFICATIONS
Dimensions
•
All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.
•
Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.
320 mm
(12.6 in)
457 mm
(18.0 in)
533 mm
(21.0 in)
442 mm
(17.4 in)
1153 mm
(45.4 in)
1561 mm
(61.4 in)
1580 mm
(62.2 in)
1505 mm
(59.2 in)
MS-2221
Performance
Breaker Weight 
With X-Change Mount 
With Loader Mount
350 kg (770 lb)
392 kg (865 lb)
463 kg (1021 lb)
Blow Rate
Soft Ground
680 - 1070 bpm
Hard Ground
820 - 1280 bpm
Operating Pressure
130,1 kPa (127.5 bar) (1850 psi)
Bit Diameter
85 mm (3.03 in)
Bit Working Length
406 mm (16.0 in)
Bits Available
Conical
Moil
Nail
Inline Chisel
Cross Cut Chisel
Asphalt Chisel
Blunt
Tamping Pad
Hydraulic System
Hydraulic Flow
55 - 100 L/min (14.5 - 26.4 U.S. gpm)
SPEC-26-1
HB Series Hydraulic Breaker Service Manual
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SPEC-26-2
HB Series Hydraulic Breaker Service Manual
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TORQUE SPECIFICATIONS FOR BOLTS
Torque For General SAE Bolts
The following table shows standard torque specifications for bolts with zinc phosphate coating. Bolts purchased from
Bobcat Company that have zinc phosphate coating are specified by the letter H following the part number.
N•m
(in-lb)
Thread
Size
0.250
0.3125
N•m
(ft-lb)
0.375
0.4375
0.500
0.5625
0.625
0.750
0.875
1.000
1.125
1.250
1.375
1.500
1.625
1.750
1.875
2.000
SAE Grade 5
SAE Grade 8
9,0 - 10,2
(80 - 90)
20,3 - 22,6
(180 - 200)
34 - 38
(25 - 28)
54 - 61
(40 - 45)
88 - 95
(65 - 70)
122 - 136
(90 - 100)
170 - 190
(125 - 140)
300 - 330
(220 - 245)
450 - 490
(330 - 360)
645 - 710
(475 - 525)
880 - 975
(650 - 720)
1200 - 1360
(900 - 1000)
1630 - 1830
(1200 - 1350)
2040 - 2240
(1500 - 1650)
2720 - 2980
(2000 - 2800)
3390 - 3730
(2500 - 2750)
4270 - 4750
(3150 - 3500)
5150 - 5700
(3800 - 4200)
12,4 - 13,6
(110 - 120)
24,2 - 27,1
(215 - 240)
47 - 54
(35 - 40)
81 - 88
(60 - 65)
122 - 136
(90 - 100)
170 - 190
(125 - 140)
240 - 260
(175 - 190)
410 - 450
(300 - 330)
645 - 710
(475 - 525)
985 - 1085
(725 - 800)
1425 - 1600
(1050 - 1175)
2000 - 2200
(1475 - 1625)
2720 - 2980
(2000 - 2200)
3530 - 3870
(2600 - 2850)
4680 - 5150
(3450 - 3800)
5830 - 6500
(4300 - 4800)
7450 - 8300
(5500 - 6100)
8800 - 9800
(6500 - 7200)
SPEC-30-1
HB Series Hydraulic Breaker Service Manual
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TORQUE SPECIFICATIONS FOR BOLTS (CONT'D)
Torque For General Metric Bolts
THREAD SIZE
(DIA. X PITCH)
MATERIAL
HEAD MARK 4
HEAD MARK 7
HEAD MARK 10
8 - 12 N•m
(6 - 9 ft-lb)
18 - 24 N•m
(13 - 18 ft-lb)
30 - 41 N•m
(22 - 30 ft-lb)
49 - 68 N•m
(36 - 50 ft-lb)
4 - 5 N•m
(3 - 4 ft-lb)
8 - 9 N•m
(6 - 7 ft-lb)
15 - 22 N•m
(11 - 16 ft-lb)
30 - 41 N•m
(22 - 30 ft-lb)
54 - 73 N•m
(40 - 54 ft-lb)
79 - 108 N•m
(58 - 80 ft-lb)
8 - 12 N•m
(6 - 9 ft-lb)
24 - 34 N•m
(18 - 25 ft-lb)
49 - 68 N•m
(36 - 50 ft-lb)
94 - 118 N•m
(69 - 87 ft-lb)
157 - 186 N•m
(116 - 137 ft-lb)
M 5 x 0.8
M 6 x 1.0
M 8 x 1.25
M 10 x 1.25
M 12 x 1.25
M 14 x 1.25
SPEC-30-2
HB Series Hydraulic Breaker Service Manual
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HYDRAULIC CONNECTION SPECIFICATIONS
Straight Thread O-ring Fitting
O-ring Face Seal Connection
Figure SPEC-40-2
IMPORTANT
Nut
Nut
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
Washer
Washer
O-ring
O-ring
I-2003-0888
Figure SPEC-40-1
A-1852
Lubricate the O-ring before installing the fitting. Loosen
the jam nut and install the fitting. Tighten the locknut until
the washer is tight against the surface [Figure SPEC-402].
Tubelines And Hoses
Replace any tubelines that are bent or flattened. They will
restrict flow, which will slow hydraulic action and cause
heat.
Replace hoses which show signs of wear, damage or
weather cracked rubber.
B-7575
When the fitting is tightened, you can feel when the fitting
is tight to eliminate leakage caused by under or over
torqued fittings. Use petroleum jelly to hold the O-ring in
position until the fittings are assembled [Figure SPEC40-1].
Always use two wrenches when loosening and tightening
hose or tubeline fittings.
O-ring Face Seal Tightening Torque
xTubeline
Outside
Diameter
xx
x
Thread Size
TORQUE
N•m
(ft-lb)
1/4”
9/16” - 18
18 (13)
3/8”
11/16” - 16
30 (22)
1/2”
13/16” - 16
54 (40)
5/8”
1” - 14
81 (60)
3/4”
1-3/16” - 12
114 (84)
7/8”
1-3/16” - 12
133 (98)
1”
1-7/16” - 12
160 (118)
1-1/4”
1-11/16” - 12
209 (154)
1-1/2”
2” - 12
221 (163)
SPEC-40-1
HB Series Hydraulic Breaker Service Manual
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HYDRAULIC CONNECTION SPECIFICATIONS
(CONT’D)
Port Seal Fitting
Figure SPEC-40-4
Flare Fitting
Figure SPEC-40-3
1
Nut Seals
To Fitting
Nut Seals
To Port
2
P-79498
Secondary O-ring Seal
P-13008
Use the following procedure to tighten the flare fitting:
Tighten the nut until it makes contact with the seat. Make
a mark across the flats of both the male and female parts
of the connection (Item 1) [Figure SPEC-40-3]
The nut is the primary seal, the O-ring is the secondary
seal and helps absorb vibration and pressure pulses at
the connection [Figure SPEC-40-4].
Use the chart (below) to find the correct tightness needed
(Item 2) [Figure SPEC-40-3]. If the fitting leaks after
tightening, disconnect it and inspect the seat area for
damage.
The hex portion of the nut does not contact the surface of
the component when the nut is tight.
Flare Fitting Tightening Torque
Tubeline
Outside
Diameter
x
x
Thread Size
TORQUE
N•m
(ft-lb)
1/4”
7/16” - 20
18 (13)
5/16”
1/2” - 20
23 (17)
3/8”
9/16” - 18
30 (22)
1/2”
3/4” - 16
54 (40)
5/8”
7/8” - 14
81 (60)
3/4”
1-1/16” - 12
114 (84)
7/8”
1-3/16” - 12
133 (98)
1”
1-5/16” - 12
160 (118)
1-1/4”
1-5/8” - 12
209 (154)
1-1/2”
1-7/8” - 12
221 (163)
2”
2-1/2” - 12
342 (252)
SPEC-40-2
Port Seal and O-ring Boss
Tightening Torque
x
x
Thread Size
TORQUE
N•m
(ft-lb)
7/16” - 20
18 (13)
9/16” - 18
30 (22)
3/4” -1 6
54 (40)
7/8” - 14
81 (60)
1-1/16” - 12
114 (84)
1-3/16” - 12
133 (98)
1-5/16” - 12
160 (118)
1-7/16” - 12
209 (154)
1-5/8” - 12
221 (163)
HB Series Hydraulic Breaker Service Manual
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HYDRAULIC CONNECTION SPECIFICATIONS
(CONT’D)
Port Seal Fitting (Cont’d)
Use the following procedure to tighten the port seal
fitting:
Port seal and nut, washer and O-ring (O-ring Boss)
fittings use the same tightening torque valve chart.
If a torque wrench cannot be used, use the following
method.
Tighten the nut until it just makes metal to metal contact,
you can feel the resistance.
Tighten the nut with a wrench no more than one hex flat
maximum.
Do not over tighten the port seal fitting.
NOTE: If a torque wrench cannot be used, use the
hex flat tightening method as an approximate
guideline.
NOTE: Port seal fittings are not recommended in all
applications. Use O-ring boss fittings in these
applications.
SPEC-40-3
HB Series Hydraulic Breaker Service Manual
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SPEC-40-4
HB Series Hydraulic Breaker Service Manual
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ALPHABETICAL INDEX
(HB1180) HYDRAULIC BREAKER
SPECIFICATIONS . . . . . . . . . . . . . SPEC-26-1
(HB280) HYDRAULIC BREAKER
SPECIFICATIONS . . . . . . . . . . . . . SPEC-20-1
(HB380) HYDRAULIC BREAKER
SPECIFICATIONS . . . . . . . . . . . . . SPEC-21-1
(HB580) HYDRAULIC BREAKER
SPECIFICATIONS . . . . . . . . . . . . . SPEC-22-1
(HB680) HYDRAULIC BREAKER
SPECIFICATIONS . . . . . . . . . . . . . SPEC-23-1
(HB880) HYDRAULIC BREAKER
SPECIFICATIONS . . . . . . . . . . . . . SPEC-24-1
(HB980) HYDRAULIC BREAKER
SPECIFICATIONS . . . . . . . . . . . . . SPEC-25-1
ATTACHMENT IDENTIFICATION . . . . . . . . 1-9
ATTACHMENT STORAGE AND RETURN TO
SERVICE . . . . . . . . . . . . . . . . . . . . . . . 10-80-1
BREAKER HOUSING . . . . . . . . . . . . . 30-10-1
BREAKER . . . . . . . . . . . . . . . . . . . . . . 30-20-1
DAILY INSPECTION . . . . . . . . . . . . . . . 10-40-1
DELIVERY REPORT . . . . . . . . . . . . . . . . . 1-8
DIVERTER VALVE (S/N A00X05151 & BELOW,
S/N A00Y06088 & BELOW) . . . . . . . . . 20-10-1
DIVERTER VALVE (S/N A00X05152 A00X19999, S/N A00Y06089 - A00Y19999)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11-1
HYDRAULIC CONNECTION
SPECIFICATIONS . . . . . . . . . . . . . SPEC-40-1
INITIAL SETUP . . . . . . . . . . . . . . . . . . 10-30-1
LUBRICATING THE ATTACHMENT . . . 10-50-1
MAINTENANCE SAFETY . . . . . . . . . . . . . 1-1
REGULAR MAINTENANCE ITEMS . . . 10-60-1
REMOVAL AND INSTALLATION OF TOOL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-70-1
SCHEMATICS . . . . . . . . . . . . . . . . SPEC-10-1
SERIAL NUMBER LOCATION . . . . . . . . . . 1-7
SERVICE SCHEDULE . . . . . . . . . . . . . 10-20-1
TORQUE SPECIFICATIONS FOR BOLTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . SPEC-30-1
TROUBLESHOOTING . . . . . . . . . . . . . 10-10-1
INDEX-01
HB Series Hydraulic Breaker Service Manual
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INDEX-02
HB Series Hydraulic Breaker Service Manual
Dealer Copy -- Not for Resale
Dealer Copy -- Not for Resale
Bobcat®, the Bobcat logo and the colors of the Bobcat machine are registered trademarks of
Bobcat Company in the United States and various other countries.