June 2005 Figure 79-1 Oil System Components June 2005 Figure 79-2 Oil System Components June 2005 Pre- Mod Configuration of the No. 4 & 5 Bearing Pack Post – Mod Configuration is a Single No. 4 & 5 Bearing Figure 79-3 Bearing Numbers June 2005 June 2005 Figure 79-4 Flow Diagram Oil Circuit Oil Cooler Thermal and Pressure Bypass Valve closes at oil temp above 43º - 60ºC and opens at Oil ΔP over 65 Psi. Figure 79-5 Oil Cooler and Fuel System Preheater Fuel Circuit Fuel Preheater Thermal and Pressure bypass valve closes at Fuel Temp Below 4º - 21ºC and Opens at Fuel ΔP over 5 or 10 Psi depending on Mod Status. June 2005 Figure 79-6 Oil Filter Impending By-pass Indicator set at 13± 1 Psi By-pass Valve Partially OPEN at 17 Psi Fully Open at 30 Psig June 2005 4 Chip Detectors • No. 1 • No. 2 • No. 3 • No. 4 Figure 79-7 Chip Detectors June 2005 Figure 79-8 Chip Detector Contamination Conditions No. 1 LIGHT condition No. 2 Moderate Condition No. 3 Heavy Condition June 2005 Oil Quantity Guage Triple Display Oil Gauge Not very reliable If You have Question about Your Oil Quantity, Check it on the Dipstick Figure 70-9 Indications Pressure Switch Set At 20 Psi June 2005 Pre-Mod Pressure Switch Set At 20 Psi Post - Mod Dual Oil Pressure Switch If this is installed the oil pressure switch will activate at two different pressure settings: GI 20 Psi Above 80% N2 50 psi Figure 79-10 Oil System Low Oil Pressure June 2005 OIL 1 LO PRESS
