MIXING DIFFERENT APPROVED BRANDS OF TYPE II IS AUTHORIZED. REFER TO THE GENERAL ELECTRIC SERVICE MANUAL BEFORE MIXING OIL BRANDS.

Transcription

1 OIL SYSTEM REPLENISHING 1. General Refer to Figure 1. Each engine is equipped with an oil tank. The filler cap is accessible through the upper core cowl 412 AT on left engine or 422 AT on right engine (refer to Chapter 6). The tank has a capacity of 6.6 litres (5.8 imperial quarts, 7.0 US quarts). On aircraft 3001 to 3066, and aircraft 5001 to 5134, the oil level can be determined by a dipstick mounted in the filler cap. On aircraft 5135 and subs, the oil level can be determined by two sight gauges on top of the oil storage tank. One gauge is marked OVER FULL IF DARK and the other gauge is marked ADD OIL IF LIGHT. The oil replenishment system consists of an oil replenishment tank, an oil replenishment pump, a manual selector valve, two oil level probes, a signal conditioner and the oil control panel accessible through the rear equipment bay door. However, engine oil can be checked and replenished remotely by the oil replenishment system. 2. Oil Specification CAUTION: DO NOT MIX DIFFERENT TYPES OF OIL; CHEMICAL STRUCTURE MAKES THEM INCOMPATIBLE. IF OIL TYPES ARE MIXED, DRAIN AND FLUSH THE SYSTEM AND REFILL WITH AN APPROVED OIL. DO NOT MIX CASTROL 4000 WITH ANY OTHER OIL. OIL CONTAMINATION CAN OCCUR. DO NOT MIX MOBIL RM 184A TURBO OIL WITH ANY OTHER OIL. OIL CONTAMINATION CAN OCCUR. MIXING DIFFERENT APPROVED BRANDS OF TYPE II IS AUTHORIZED. REFER TO THE GENERAL ELECTRIC SERVICE MANUAL BEFORE MIXING OIL BRANDS. DRAIN AND FLUSH THE OIL SYSTEM IF OIL TYPES HAVE BEEN MIXED. Page 1 Sep 04/98

2 Approved Brand Name Lubricants TYPE I MIL L 7808 TYPE II MIL L Aeroshell Turbine Oil 500 Aeroshell 560 Castrol Oil 4000 Castrol Oil 5000 British Petroleum Turbine Oil 2380 British Petroleum Turbine Oil 2389 Mobil Avrex S Turbo 256 Mobil Jet Oil II Mobil Jet Oil 291 Mobil RM 184A Turbo Oil All brands of lubricants under Specification MIL L 7808 and Type I or MIL L and Type II are not necessarily approved as a group for commercial use, due to difference in foaming characteristics, trace elements, flash points, and other criteria. Only those lubricants listed in Figure 1 are approved for use in the engine oil tank. MIL L and Type II oils have a viscosity of 5 centistokes and are limited to use from 40 C ( 40 F) to 54 C (129 F) ambient temperature. MIL L 7808 and Type I oils have a viscosity of 3 centistokes and are limited to be used in ambient temperatures of 54 ( 65 F) to 54 (130 F) and in emergency conditions, when MIL L Type II oils are not available. Type I and Type II are generic oil types. Engine Oil Specifications Figure 1 Page 2 May 29/2008

3 3. Replenishing The engine oil may be checked and replenished directly at the engine oil tank (refer to paragraph A.) or by the oil replenishment system (refer to paragraph B.). A. Check Oil Level at Engine (Figure 2) CAUTION: EXAMINE THE OIL QUANTITY BETWEEN 15 AND 30 MINUTES AFTER YOU STOP THE ENGINE, OR IN LESS THAN 5 MINUTES AFTER A DRY MOTOR RUN. IF YOU DO NOT DO THIS, THE QUANTITY INDICATION WILL BE INCORRECT AND YOU WILL FILL THE ENGINE WITH TOO MUCH OIL. THIS CAN CAUSE DAMAGE TO THE ENGINE. On aircraft 3001 to 3066 and aircraft 5001 to 5134, (1) Open engine upper translating and core cowls and check oil level by removing filler cap dipstick from engine oil storage tank. Safe oil level is above ADD line on dipstick. (2) If oil level is below ADD line on dipstick, slowly add oil until oil level is between 1 QT and 2 QT marks. (3) If oil tank contents are very low and if low or fluctuating pressures have not been recorded, proceed as follows: (a) (b) (c) (d) (e) Check for external leakage and oil filter contamination. Clean oil filter element (refer to Engine Maintenance Manual). Fill tank and record quantity of oil added to system. Carry out an engine ground run paying particular attention to oil system pressure and temperature (refer to Check oil level and oil filter condition immediately after engine shutdown. If both are satisfactory no further action is required. (4) If oil does not register on dipstick, add oil as required. Motor engine for 30 seconds, check oil level again and add oil as required. (5) If oil level is above overflow point after motoring, remove excess oil, motor engine for 30 seconds and check oil level again. Repeat until oil level does not change after motoring. (6) Install filler cap dipstick and ensure that lock lever is in down position. (7) Wipe off any excess oil. Page 3 Apr 24/2006

4 Oil System Replenishing Figure 2 Page 4 Dec 10/1999

5 (8) Close engine cowls. On aircraft 5135 and subs, MAINTENANCE MANUAL (1) Open engine upper translating and core cowls and check the two oil level sight gauges on top of the oil storage tank. (2) If the OVERFULL sight gauge window is light, and the ADD OIL sight gauge window is not light, the oil quantity is correct. (3) If the ADD OIL sight gauge window is light, add oil to the engine oil tank. (4) If the OVERFULL sight gauge window is not light, drain excess oil from the oil storage tank. (5) If oil content are very low and if low or fluctuating pressures have not been recorded, proceed as follows: (a) (b) (c) (d) (e) (f) Check for external leakage and oil filter contamination. Replace oil filter element, if necessary. Fill tank and record quantity of oil added to system (refer to GE Maintenance Manual, SEI 580). Dry motor the engine and check the oil level again (refer to Carry out an engine ground run paying particular attention to oil system pressure and temperature (refer to Check oil level and oil filter condition immediately after engine shutdown. If both are satisfactory no further action is required. (6) Wipe off any excess oil. (7) Close engine cowls. B. Oil Replenishment System (Figure 2) CAUTION: EXAMINE THE OIL QUANTITY BETWEEN 15 AND 30 MINUTES AFTER YOU STOP THE ENGINE, OR IN LESS THAN 5 MINUTES AFTER A DRY MOTOR RUN. IF YOU DO NOT DO THIS, THE QUANTITY INDICATION WILL BE INCORRECT AND YOU WILL FILL THE ENGINE WITH TOO MUCH OIL. THIS CAN CAUSE DAMAGE TO THE ENGINE. (1) Open rear fuselage equipment bay door 311 BB (refer to Chapter 6). Page 5 Apr 24/2006

6 (2) Check oil level in oil replenishment tank and fill as necessary. (3) Check that all lights on the oil level control panel are off. (4) Set the toggle switch on the oil level control panel to ON; check that the ON, LH FULL and RH FULL switch/lights come on and remain on. WARNING: OVERFILLING MAY CAUSE ENGINE FAILURE. (5) If LH FULL and/or RH FULL switch/lights do not come on, replenish as follows: (a) Press and hold applicable PRESS TO TEST switch/light. Check that the legend comes on for two to four seconds and then goes out. (b) (c) (d) Release PRESS TO TEST switch/light. Set the manual selector valve to L ENG or R ENG as required. When green LH or RH FULL legend comes on for tank being replenished, set the manual selector to the OFF position. (6) Set the toggle switch on the oil level control panel to OFF. (7) Fill oil replenishment tank as necessary. (8) Close rear fuselage equipment bay door. C. Flushing Engine Oil System (Figure 3) Equipment and Material Container, oil spillage, three gallon minimum capacity Drain line, flexible Engine oil, MIL L or MIL L 7808 (1) Open rear fuselage equipment bay door 311 BB (refer to Chapter 6). (2) Open and secure power plant upper and lower translating cowls and upper and lower core cowls (refer to (3) Flush the oil replenishment tank as follows: (a) Place container to collect oil spillage. (b) Remove oil filler cap (1). Page 6 Dec 10/1999

7 Oil System Flushing Figure 3 Page 7 Dec 10/1999

8 (c) Remove drain plug (3) and drain oil into container. Discard preformed packing (2). Use a flexible drain line to drain the oil. (d) (e) Discard the oil. Lubricate new preformed packing (2) with engine oil and install on drain plug (3). Install, torque and lockwire drain plug (refer to Chapter 20). (4) On aircraft 3001 to 3066, and aircraft 5001 to 5134, do the steps that follow: (a) Drain the oil from the engine (refer to GE Maintenance Manual, SEI 580, page 327, step 6.C.(1)). If you do the flushing of the engine oil system to change to a different oil specification type, it is not necessary to replace the oil filter. (b) Drain the oil from the accessory gearbox as follows: i. Place container to collect oil spillage. ii. Remove chip detector from aft side of accessory drive gearbox, located at the 7 o clock position. Discard packing. iii. Lubricate and install new packing on chip detector. iv. Install chip detector into aft side of the accessory gearbox, located at the 7 o clock position. v. Torque chip detector to 155 to 175 lbf in (19.8 to 26.6 Nm). vi. Discard the oil. On aircraft 5135 and subs, drain the oil from the engine and the accessory gearbox (refer to GE Maintenance Manual, SEI 780, page 315, step 5.C.(1)). If you do the flushing of the engine oil system to change to a different oil specification type, it is not necessary to replace the oil filter. (5) Replenish oil replenishment tank and oil storage tank with new oil of the desired approved type (refer to paragraph B.). (6) Start and run engine for a minimum of 5 minutes (refer to Page 8 Dec 10/1999

9 (7) Shutdown engine (refer to (8) Repeat step (4) to drain the oil from the engine and the accessory gearbox again. (9) Replenish oil storage tank with new oil of the desired approved type (refer to paragraph A. or B.). (10) Check for oil leaks. (11) Close and secure power plant upper and lower core cowls and upper and lower translating cowls (refer to (12) Close rear fuselage equipment bay door 311 BB (refer to Chapter 6). 4. Engine Oil Filter Refer to the Engine Maintenance Manual for filter element change procedure (refer to GE Maintenance Manual, SEI-780). Page 9 Apr 24/2006