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 B. If the fault symptom is identified by the crew observation: ENG1-oil quantity indication higher than on engine 2:
 (1) Do a check for overserviced tank. Drain unwanted oil quantity.

 (2) Do a check to make sure that the oil tank level confirms the oil quantity indication on the lower ECAM display unit.

 (a) If the check confirms the fault:
 - smell the oil for signs of fuel in it.
 1 If confirmed:
_
 - replace the servo fuel heater (Ref. AMM TASK 73-11-20-000-002) and (Ref. AMM TASK 73-11-20-400-002)

 - replace the main oil/fuel heat exchanger (Ref. AMM TASK 79-21-20-000-002) and (Ref. AMM TASK 79-21-20-400-002).

 (b) If the check does not confirm the fault:
 - replace the XMTR-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 aircraft wiring from the oil quantity transmitter (4002EN) to the SDAC1 (1WV1), SDAC2 (1WV2) and EIU1 (1KS1).
 (c) If the oil quantity indication is replaced by amber XX on the lower ECAM display unit:
 - do a check for 28VDC at the oil quantity transmitter (4002EN).
 1 If there is no 28VDC:
_
 - do a check of the aircraft 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 aircraft 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).
 C. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006).
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 TASK 79-00-00-810-811
 Oil Quantity Indication on Engine 2 Higher than on Engine 1
 1. Possible Causes
_______________
 - EIU-2 (1KS2)

 - servo fuel heater

 - main oil/fuel heat exchanger

 - XMTR-OIL QTY (4002EN)

 - aircraft wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 71-00-00-710-006 Minimum Idle Check
 AMM 73-11-20-000-002 Removal of the Servo Fuel Heater
 AMM 73-11-20-400-002 Installation of the Servo Fuel Heater
 AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU)

 (1KS1,1KS2)
 AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU)

 (1KS1,1KS2) AMM 79-21-20-000-002 Removal of the Main Oil/Fuel Heat Exchanger AMM 79-21-20-400-002 Installation of the Main Oil/Fuel Heat Exchanger AMM 79-31-15-000-041 Removal of the oil Quantity Transmitter (4002EN) AMM 79-31-15-400-041 Installation of the Oil Quantity Transmiter (4002EN) ASM 79-36/01
 3. Fault Confirmation
__________________
 A. Test
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU ENGINE/ENG2/OIL/QTY 1EN2 N41
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 B. If the fault symptom is identified by the crew observation: ENG2-oil quantity indication higher that on engine 1:
 (1) Do a check for overserviced tank. Drain unwanted oil quantity.

 (2) Do a check to make sure that the oil tank level confirms the oil quantity indication on the lower ECAM display unit.

 (a) If the check confirms the fault:
 - smell the oil for signs of fuel in it.
 1 If confirmed:
_
 - replace the servo fuel heater (Ref. AMM TASK 73-11-20-000-002) and (Ref. AMM TASK 73-11-20-400-002)
　
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