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4. Fault Isolation
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A. If the oil tank level confirms the oil indication:
R NOTE : Refer to CFM SB 79-021 covering HTS Oil coking issues. Trend____
R instructions to monitor oil pressure trend and implement
R Inspection and Cleaning procedures if necessary.
(1) Do a minimum idle check to make sure there are no leaks (Ref. AMM TASK 71-00-00-710-006).
(2) Do a check of the magnetic chip detector for abnormal debris.
(3) Do a check of the oil tank, lubrication unit, external oil supply and scavenge lines, for cracks/leaks.
(4) Do a check for heavy oil discharge in the center vent tube.
(a) If confirmed:
- replace the ENGINE-1 (1000EM1) (Ref. AMM TASK 71-00-00-000-042) and (Ref. AMM TASK 71-00-00-400-042).
(5) Do a check to see if the flame arrestor is clogged.
(a) If confirmed:
- clean or replace it.
(6) Remove TGB/AGB drain plug and do a check for abnormal oil quantity. If greater than one quart:
- do a check for blockage of the oil scavenge line or replace the lubrication unit (Ref. AMM TASK 79-21-10-000-004) and (Ref. AMM TASK 79-21-10-400-004).
(7) Do a borescope inspection of the high pressure compressor stage 1 and 2 to see if they are covered with oil (Ref. AMM TASK 72-31-00-290-002).
(8) Do an inspection of the fan blades and booster stage 1 at 6 o'clock to see if they are covered with oil.
(9) Do an inspection of the frame struts and aft side of stage 4 low pressure blades to see if they are covered with oil.
(a) If there is oil:
- replace the ENGINE-1 (1000EM1) (Ref. AMM TASK 71-00-00-000-042) and (Ref. AMM TASK 71-00-00-400-042).
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B. If the oil tank level does not confirm the oil quantity:
- replace the XTMR-OIL QTY (4002EN) (Ref. AMM TASK 79-31-15-000-041) and (Ref. AMM TASK 79-31-15-400-041).
(1) If the fault continues:
- do a check and repair the wiring from the oil quantity transmitter (4002EN) to the SDAC-1 (1WV1), SDAC-2 (1WV2 and EIU1 (1KS1).
C. If there are amber XX at the oil quantity indication location on the
lower ECAM DU:
- do a check for 28VDC at the oil quantity transmitter (4002EN).
(1) If there is no 28VDC:
- do a check of the wiring between the circuit breaker (1EN1) and the oil quantity transmitter (4002EN) (Ref. ASM 79-36/01).
(2) If there is 28VDC:
- do a check and repair the wiring from the oil quantity transmitter (4002EN) to the EIU1 (1KS1) pins AA/3, 4 to pins AA/8F, 8H (Ref. ASM 79-36/01).
(a) If the fault continues:
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
D. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006).
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TASK 79-00-00-810-819
Incorrect Oil Quantity Level on Engine 2
1. Possible Causes
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- ENGINE-2 (1000EM2)
- EIU-2 (1KS2)
- lubrication unit
- XTMR-OIL QTY (4002EN)
- wiring
- wiring between the circuit breaker (1EN2) and the oil quantity transmitter (4002EN)
- wiring from the oil quantity transmitter (4002EN) to the EIU2 (1KS2)
2. Job Set-up Information
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本文链接地址：A320 Trouble Shooting Manual 排故手册 OIL 滑油(11)
