- examine the fuel filter cartridge, do a contamination check of the R fuel filter (Ref. AMM TASK 73-11-10-210-003),
- visually inspect the PS3 sense line to make sure that there is no leakage or blockage (Ref. AMM TASK 72-00-00-200-026),
- visually examine the VSV actuation system hardware, look for broken, loose or damaged hardware (Ref. AMM TASK 72-32-00-210-002).
(a) If nothing is found:
1 do the following inspection as necessary:
_
- do a borescope inspection of the high-pressure compressor-rotor assembly (Ref. AMM TASK 72-31-00-290-002),
- do a borescope inspection of the high-pressure turbine blades/nozzles (Ref. AMM TASK 72-51-00-290-004),
- do a borescope inspection of the low pressure turbine (Ref. R AMM TASK 72-54-00-290-005) and (Ref. AMM TASK 72-54-00-290-R 006) and (Ref. AMM TASK 72-54-00-290-007) and (Ref. AMM TASK R 72-54-00-290-008) and (Ref. AMM TASK 72-54-00-210-005),
- do a borescope inspection of the combustion chamber (Ref. R AMM TASK 72-41-00-290-001),
- do a borescope inspection of the low pressure compressor (Ref. AMM TASK 72-21-00-290-003).
2 If nothing is found:
_
- do an inspection of the IP bleed check valve for free operation and condition of the flappers (Ref. AMM TASK 36-11-41-200-001).
a If nothing is found:
_
- replace the Hydromechanical Unit (HMU) (Ref. AMM TASK 73-21-10-000-002) and (Ref. AMM TASK 73-21-10-400-002).
(4) If no failure message was found and if at the time of the event, the crew did not report symptoms such as stall, high EGT, sudden power loss, high vibrations:
- examine the fuel filter cartridge, do a contamination check of the fuel filter (Ref. AMM TASK 73-11-10-000-003) and (Ref. AMM TASK 73-11-10-400-003) ,
R - do a check of the Master Magnetic Chip Detector for particles (Ref. R AMM TASK 79-00-00-281-002).
(a) If nothing is found:
- do a detailed visual inspection of the PS3 sense line (Ref. AMM TASK 72-00-00-200-026).
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1 If nothing is found:
_
- remove and check the IP bleed check valve for correct condition (Ref. AMM TASK 36-11-41-200-001).
a If nothing is found:
_
- replace the Hydromechanical Unit (HMU) (Ref. AMM TASK 73-21-10-000-002) and (Ref. AMM TASK 73-21-10-400-002) and the fuel pump (Ref. AMM TASK 73-11-10-000-003) and (Ref. AMM TASK 73-11-10-400-003).
(b) If the fault occurred during engine operation in gravity feeding (boost pump off):
- inspect the VALVE-AIR RELEASE, L WING TK (86QM) and fuel supply tubes in the wing fuel tank for condition,
- repair or replace if necessary.
(5) Do the operational test of the FADEC 1A and 1B (with the engine R motoring) (Ref. AMM TASK 73-29-00-710-040).
B. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006).
(1) No additional maintenance action is required if the fault is not confirmed.
(2) Repeat the fault isolation procedure if the fault continues.
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Roll Back on Engine 2
1. Possible Causes
_______________
- VALVE-AIR RELEASE, R WING TK (87QM)
- engine
- ECU
- low pressure fuel shut-off valve
- IP bleed check valve
- PS3 sense line
- Hydromechanical Unit (HMU)
- fuel pump
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 28-24-00-720-001 AMM 36-11-41-200-001 AMM 71-00-00-710-006 AMM 72-00-00-200-026 AMM 72-21-00-290-003
AMM 72-31-00-290-002
AMM 72-32-00-210-002
R AMM 72-41-00-290-001
R
AMM 72-51-00-290-004
R AMM 72-54-00-210-005
R AMM 72-54-00-290-005
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机 ENGINE(3)
