INTERACTIVE SCHEMATIC Bookmarks X Options This document is best viewed at a screen resolution of 1024 X 768. Features Cover Page To set your screen resolution do the following: RIGHT CLICK on the DESKTOP. Select PROPERTIES. CLICK the SETTINGS TAB. MOVE THE SLIDER under SCREEN RESOLUTION until it shows 1024 X 768. CLICK OK to apply the resolution. Information Component Table Tap Table Fluid Power Symbols Electrical Symbols Schematic Machine Views Front Frame Rear Frame Tap Views The Bookmarks panel will allow you to quickly navigate to points of interest. EC-C2 EC-C3 E-C60 E-C61 Click on any text that is BLUE and underlined. These are hyperlinks that can be used to navigate the schematic and machine views. EC-C1 VIEW ALL CALLOUTS When only one callout is showing on a machine view this button will make all of the callouts visible. This button is located in the top right corner of every machine view page. HOTKEYS (Keyboard Shortcuts) FUNCTION Zoom In Zoom Out Fit to Page Hand Tool Find KEYS “CTRL” / “+” “CTRL” / “-” “CTRL” / “0” (zero) “SPACEBAR” (hold down) “CTRL” / “F” RENR9980-07 July 2013 330D, 336D, and 336D2 Excavator and 336D MHPU Hydraulic System 330D: MAG1-UP B6H1-UP LRM1-UP JLP1-UP HAS1-UP EDX1-UP T2Y1-UP 336D: PTB1-UP J2F1-UP KDJ1-UP MYP1-UP M4T1-UP WET1-UP 336D2: ZCT1-UP 336D MHPU: JRX1-UP Heavy Lift and Fine Swing © 2013 Caterpillar, All Rights Reserved Printed in U.S.A. COMPONENT LOCATION Description Part Number Machine Schematic Location Location ACCUMULATOR GP 164-6981 1 B-6 CYLINDER GP - BOOM NOTE A 2 G-3 CYLINDER GP - BUCKET NOTE A 3 G-10 CYLINDER GP - STICK NOTE A 4 G-10 FILTER GP - OIL (CASE DRAIN) 289-8194 5 A-6 FILTER GP - OIL (HYDRAULIC RETURN) 188-4140 6 A-9 FILTER GP - OIL (PILOT) 158-8987 7 A-5 MANIFOLD GP - CONTROL (PILOT OIL) 215-5037 8 B-8 MOTOR GP - HYDRAULIC FAN 234-4638 9 A-10 MOTOR GP - SWING 200-3373 10 G-8 MOTOR GP - TRAVEL (LEFT) 271-6376 11 G-6 MOTOR GP - TRAVEL (RIGHT) 271-6376 12 G-5 PUMP GP - HYDRAULIC FAN 259-0815 13 B-4 PUMP GP - MAIN 322-8733 14 B-3 SWIVEL GP 234-4440 15 F-6 VALVE GP - CHECK (OIL COOLER BYPASS) 190-7745 16 B-9 VALVE GP - CUSHION (CROSSOVER RELIEF) 322-8716 17 F-8 VALVE GP - LOAD CONTROL (BOOM DRIFT RED, RELIEF LINE) 255-5683 18 E-3 VALVE GP - LOAD CONTROL (STICK DRIFT RED, RELIEF LINE) 255-5680 19 E-7 VALVE GP - MAIN CONTROL 285-1345 20 D-4 VALVE GP - PILOT (TRAVEL) 310-0414 21 E-10 VALVE GP - PILOT CONTROL (LEFT JOYSTICK) 297-0533 22 D-10 VALVE GP - PILOT CONTROL (RIGHT JOYSTICK) 297-0532 23 D-9 VALVE GP - PRESSURE REDUCING (BOOM, SWING PRIORITY) 310-0210 24 B-6 VALVE GP - SHUTTLE 185-0462 25 C-10 VALVE GP - SHUTTLE 123-2430 26 B-6 VALVE GP - SOLENOID (HEAVY LIFT) 121-6303 27 B-6 VALVE GP - TRAVEL (COUNTERBALANCE) (LEFT) 204-2819 28 F-7 VALVE GP - TRAVEL (COUNTERBALANCE) (RIGHT) 204-2819 29 F-5 Note A: Refer to Parts Manual for your specific machine. TAP LOCATION Tap Number Description Schematic Location AA Pilot Filter Pressure Test Port A-6 BB Drive Pump Pressure Test Port B-2 CC Power Shift Pressure Test Port B-2 DD SOS Idler Pump Pressure Test Port Hydraulic Oil Sampling Port A-2 A-5 FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS MAIN AUX. PUMP or MOTOR SPRING (ADJUSTABLE) VARIABILITY CONTROL VALVES SPRING FLUID CONDITIONER PRESSURE COMPENSATION LINE RESTRICTION (VARIABLE) TWO POSITION 2-SECTION PUMP HYDRAULIC PNEUMATIC ENERGY TRIANGLES ATTACHMENT LINE RESTRICTION VALVE PORTS TWO-WAY THREE POSITION PUMP: VARIABLE and PRESSURE COMPENSATED VARIABLE and PRESSURE COMPENSATED VALVES VALVE ENVELOPES ONE POSITION LINE RESTRICTION (FIXED) RESTRICTION FOUR-WAY THREE-WAY CONTROL VALVES CHECK VALVES AB AB P T NORMAL POSITION P T SHIFTED POSITION INFINITE POSITION SHUTTLE SPRING LOADED BASIC SYMBOL PILOT CONTROLLED FLUID STORAGE RESERVOIRS VENTED RETURN ABOVE FLUID LEVEL PRESSURIZED RETURN BELOW FLUID LEVEL MEASUREMENT PRESSURE TEMPERATURE ROTATING SHAFTS FLOW UNIDIRECTIONAL BIDIRECTIONAL COMBINATION CONTROLS SOLENOID SOLENOID or MANUAL SOLENOID and PILOT or MANUAL SOLENOID and PILOT SERVO DETENT THERMAL MANUAL CONTROL SYMBOLS MANUAL SHUTOFF PUSH-PULL LEVER RELEASED PRESSURE EXTERNAL RETURN SPRING LOADED HYDRAULIC PUMPS VARIABLE DISPLACEMENT NON-COMPENSATED PEDAL LINES CROSSING LINES JOINING VARIABLE DISPLACEMENT NON-COMPENSATED UNIDIRECTIONAL UNIDIRECTIONAL BIDIRECTIONAL BIDIRECTIONAL INTERNAL SUPPLY PRESSURE COMPLETE HYDRAULIC AND PNEUMATIC CYLINDERS SINGLE ACTING DOUBLE ACTING INTERNAL PASSAGEWAYS HYDRAULIC MOTORS FIXED DISPLACEMENT SPRING REMOTE SUPPLY PRESSURE SIMPLIFIED CROSSING AND JOINING LINES GAS CHARGED PUSH BUTTON PILOT CONTROL SYMBOLS INTERNAL RETURN ACCUMULATORS FIXED DISPLACEMENT GENERAL MANUAL INFINITE POSITIONING FLOW IN ONE DIRECTION THREE POSITION PARALLEL FLOW CROSS FLOW TWO POSITION FLOW ALLOWED IN EITHER DIRECTION ELECTRICAL SYMBOLS Hydraulic Symbols (Electrical) G Transducer (Fluid) Transducer (Gas / Air) Pressure Switch (Adjustable) Pressure Switch M Generator Electric Motor Electrical Wire Temperature Switch Electrical Symbols (Electrical) T Pressure Symbol Temperature Symbol Level Symbol Flow Symbol Wire Number Identification Codes Electrical Schematic Example Hydraulic Schematic Example Current Standard Current Standard Harness identification code This example indicates wire 135 in harness "AG". Wire Circuit Number Identification Wire Color 325-AG135 PK-14 325-PK Circuit Identification Number Wire Color Wire Gauge Previous Standard Wire Color Wire 325-PK-14 B Circuit Number Identification A Wire Gauge (EXAMPLE VALVE) 10 9 8 (10) MOTOR GP SWING 200-3373 7 6 5 PG (11) MOTOR GP TRAVEL (LEFT) 271-6376 DR (3) CYLINDER GP G BUCKET R.C.V.-C (4) CYLINDER GP STICK G (2) CYLINDER GP BOOM T1 T2 BL3 F TT BR4 F B A BL2 AL2 A (28) VALVE GP TRAVEL (COUNTERBALANCE) (LEFT) 204-2819 (17) VALVE GP CUSHION (CROSSOVER RELIEF) 322-8716 TP AR4 AG BG BG AG TRAVEL (L) 1 Pp3 T1 T2 A1 B1 AL3 2 AG Pp3 BR3 3 (12) MOTOR GP TRAVEL (RIGHT) 271-6376 MU BG AR3 4 A B BL1 AL1 AR1 BR1 (15) SWIVEL GP 234-4440 TRAVEL (R) B (29) VALVE GP TRAVEL COUNTERBALANCE (RIGHT) 204-2819 E aL1 T6 BACK T3 bR1 bL1 aR1 BL3 (21) VALVE GP PILOT (TRAVEL) 310-0414 SP3 SPi (19) VALVE GP LOAD CONTROL (STICK DRIFT RED, RELIEF LINE) 255-5680 aL2 AL3 SP2 SDr JLT BACK BP1 BT R1 R3 IN D UP JR1 Di2 A8 bL4 bR4 B7 bL3 bL2 C R.C.V.: A bL4 DE F FWD Pi5 bL1 bL2 aL2 (8) MANIFOLD GP CONTROL (PILOT OIL) 215-5037 G A DST P2 Pi1 P-IN PSA2 DR1 PSA1 A1 B2 A2 T P1 Pi2 DR5 T-OUT1 DR6 T (27) VALVE GP SOLENOID (HEAVY LIFT) 121-6303 P L2 (5) FILTER GP OIL (CASE DRAIN) 289-8194 IN OUT A (14) PUMP GP MAIN 322-8733 Pi1 HR (13) PUMP GP HYDRAULIC FAN 259-0815 AA PR L1 D0 Ps1 a4 a1 M1 7 BB Pressure Line Pilot / Load Sensing Pressure CC a3 LEFT PUMP A4 S1 6 B LINE PATTERNS Psv RIGHT PUMP S a5 D1 Ps2 Drain / Return Lines Component Group M2 CALLOUTS DD a2 YY Callout Number (Machine Location from Component LocationsTable) Taps (Pressure, Sampling, Sensor - by letter) (52) VALVE GP - CONTROL 138-1234 Part Number Component Name A PC THIS SCHEMATIC IS FOR THE 330D, 336D, AND 336D2 EXCAVATOR AND 336D MHPU HYDRAULIC SYSTEM / WITH HEAVY LIFT AND FINE SWING MEDIA NUMBER: RENR9980-07 SCHEMATIC PART NUMBER: 259-7414, CHANGE: 02, VERSION: HE HL SOS Pi2 8 PILOT PUMP OUTPUT IMPLEMENT AND RIGHT TRAVEL PUMP OUTPUT HEAVY LIFT CONTROL CIRCUIT FAN PUMP OUTPUT POWER SHIFT CONTROL CIRCUIT SUPPLY LINE STICK CONTROL AND STICK CYLINDER CIRCUIT LEFT TRAVEL CONTROL AND LEFT TRAVEL MOTOR CIRCUIT ATTACHMENT CONTROL CIRCUIT SWING CONTROL AND SWING MOTOR CIRCUIT DRAIN / RETURN LINE IMPLEMENT AND RIGHT TRAVEL PUMP OUTPUT TRAVEL SPEED CONTROL CIRCUIT BUCKET CONTROL AND BUCKET CYLINDER CIRCUIT RIGHT TRAVEL CONTROL AND RIGHT TRAVEL MOTOR CIRCUIT BOOM CONTROL AND BOOM CYLINDER CIRCUIT T (6) FILTER GP OIL (HYDRAULIC RETURN) 188-4140 9 (7) FILTER GP OIL (PILOT) 158-8987 R.C.V.: RETURN CHECK VALVE HR PL PG B bR4 P2 (1) ACCUMULATOR GP 164-6981 A DR4 C OUT bR5 Di1 HYDRAULIC CIRCUIT COLOR DESCRIPTIONS (24) VALVE GP PRESSURE REDUCING L (BOOM, SWING PRIORITY) 310-0210 B DR (9) MOTOR GP HYDRAULIC FAN 234-4638 bR3 PR (26) VALVE GP SHUTTLE 123-2430 DR2 P1 DR3 L3 UP bR2 PL PAC DR1 OPEN B8 (16) VALVE GP CHECK (OIL COOLER BYPASS) 190-7745 R.C.V.: C R.C.V.: B B6 R Di3 Dr1 bR3 B5 #3 (LOCK) B4 Pi3 bL3 T-OUT2 aR4 B3 OUT bR1 #2 (SWING) B2 Pi2 STICK (2) A7 DOWN JR3 HL 10 BR4 BOOM (1) A6 B A Pi1 DOWN BUCKET A5 CLOSE JR2 ATCH A4 OPEN TRAVEL (R) B A3 JR4 TRAVEL (L) A2 L JL4 SWING A1 B1 aR3 R.C.V.: B aR4 AR3 BR3 BACK AR4 (20) VALVE GP MAIN CONTROL 285-1345 aR2 BR2 AR2 Pi4 BP2 BOOM STICK (1) (25) VALVE GP SHUTTLE 185-0462 R JL2 BUCKET BOOM (2) IN JL3 C Di4 BR1 BPi JRP SWING OUT SP1 ST BL3 R2 aR1 BL1 BR4 JRT STICK JL1 aL4 UP aR3 AR1 L (22) VALVE GP PILOT CONTROL (LEFT JOYSTICK) 297-0533 JLP T aL1 AL1 BL2 IN aL3 (23) VALVE GP PILOT CONTROL (RIGHT JOYSTICK) 297-0532 #1 (TRAVEL) D R.C.V.: A AL4 AL2 BP3 (18) VALVE GP LOAD CONTROL (BOOM DRIFT RED, RELIEF LINE) 255-5683 AR5 aR5 T5 FWD T4 BR5 FWD T2 CLOSE BACK T1 BDr E 5 4 Components are shown installed on a fully operable machine with the key and engine off, and with parking brake set. Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations. 3 2 1 MACHINE COMPONENT LOCATIONS VIEW ALL CALLOUTS 25 8 22 23 21 4 3 26 2 16 1 24 27 14 13 17 FILTERS VIEW ALL CALLOUTS SOS AA 6 7 MOTOR GP - SWING AND SWIVEL VIEW ALL CALLOUTS 10 15 MOTOR GP - TRAVEL VIEW ALL CALLOUTS 28 29 11 12 RIGHT SIDE SHOWN PUMP GP - MAIN VIEW ALL CALLOUTS BB CC 9 5 DD VALVE GP - MAIN CONTROL VIEW ALL CALLOUTS 20 18 19