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TASK 79-00-00-810-824
Loss of the Oil Pressure Indication on Engine 1 or 2
1. Possible Causes
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- XMTR-OIL PRESS (4003EN) R - SDAC-1 (1WV1) R - SDAC-2 (1WV2)
- wiring
- EIU-1(2) (1KS1(2)) R - 1KS1(2)
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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R AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
R AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2) AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU) AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU) AMM 79-33-15-000-041 Removal of the Oil Pressure Transmitter (4003EN) AMM 79-33-15-400-041 Installation of the Oil Pressure Transmitter (4003EN) ASM 79-36/01
3. Fault Confirmation
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A. Test
(1) Not applicable.
4. Fault Isolation
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A. Table of the circuit breakers used in this procedure:
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PANEL DESIGNATION IDENT. LOCATION
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121VU ENGINE/ENG1/OIL/PRESS 2EN1 N40
B. Replace the XMTR-OIL PRESS (4003EN) (Ref. AMM TASK 79-33-15-000-041) and (Ref. AMM TASK 79-33-15-400-041).
(1) If the fault continues:
- do a check of the electrical wiring between the ENG1(2) OIL PRESS XMTR (4003EN), the EIU-1(2) (1KS1(2)), the SDAC1 and the SDAC2 (Ref. ASM 79-36/01).
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R (2) If the fault continues: - do a check of the electrical grounding of the ENG1(2) OIL PRESS XMTR (4003EN) at the ground terminal on the engine fan case (Ref. ASM 79-36/01).
R (3) If the fault continues: - do a check of the electrical wiring between the ENG1(2) OIL PRESS XMTR (4003EN) and circuit breaker 2EN1(2) (Ref. ASM 79-36/01), - repair wiring or replace circuit breaker as required.
R R R (4) If the fault continues: - replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001)
R R R (5) If the fault continues: - replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001)
R R (6) If the fault continues: - replace the 1KS1(2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
C. No additional maintenance action is required if the fault is not confirmed.
(1) Repeat the fault isolation procedure if the fault continues.
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TASK 79-00-00-810-833
The Electrical Master Chip Detector indication is popped out - Engine 1
1. Possible Causes
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2. Job Set-up Information
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A. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2010 *
white spirit (Ref. 70-30-00)
Material No. CP2011 *
stoddart solvant (Ref. 70-30-00)
B. Referenced Information
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R AMM 79000020000100 AMM 79-00-00-281-002 Check of the Electrical Master Chip Detector for Particles R AMM 79-00-00-281-003 Check of FWD, AFT Sump, AGB, and TGB scavenge screens AMM 79-00-00-480-001 Installation of a Magnetic Bar in the Scavenge Screen
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