(s) If there is fuel leakage in the area of the fuel control unit:
- replace the seals and or the FUEL CONTROL UNIT (8022KM) as necessary (Ref. AMM TASK 49-32-11-000-001) and (Ref. AMM TASK 49-32-11-400-001).
(t) If there is fuel leakage in the area of the inlet guide-vane actuator:
- replace the seals and/or the fuel lines to the actuator and/or the INLET GUIDE VANE-ACTUATOR (8014KM) as necessary (Ref. AMM TASK 49-23-51-000-002) and (Ref. AMM TASK 49-23-51-400-002).
(2) If you find other unwanted material on the surfaces of the air intake system components:
- identify the material and its source,
- if you think that the unwanted material has damaged the APU compressors, do the borescope inspection of the compressors (Ref. AMM TASK 49-20-00-200-001).
(3) If there is no external contamination:
- if the oil level in the oil reservoir is above the FULL mark on the oil sight glas, correct it with the overflow drain tool (Ref. AMM TASK 49-90-00-600-001).
NOTE : If the APU oil reservoir was filled above the FULL mark on the
____ oil sight glass: During APU operation the oil expands which could create an over-filled condition, resulting in leakage and possible oil smell in the cabin.
- remove the APU Bleed-Air Duct Elbow (Ref. AMM TASK 49-11-11-000-001),
- remove the Load Control Valve (8051KM) (Ref. AMM TASK 49-51-51-000-001).
- examine the removed components with a black light lamp and make sure that you do not find signs of contamination.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 063-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A241
Config-1 Aug 01/05 CES (a) If there are signs of contamination:
- clean the APU Bleed-Air Duct Elbow and install it (Ref. AMM TASK 49-11-11-400-001),
- clean the Load Control Valve (8051KM) and install it (Ref. AMM TASK 49-51-51-400-001).
- do a check of the by-pass valve of the load compressor buffer-air system. If necessary, replace the Load-Compressor Buffer-air Bypass Valve.
1 If the fault continues:
_
- replace the seals on the turbine bearing cavity vent and lubrication tubes (Ref. AMM TASK 49-91-53-000-001) and (Ref. AMM TASK 49-91-53-400-001).
2 If the fault continues:
_
- replace the AUXILIARY POWER UNIT (4005KM) (Ref. AMM TASK 49-11-11-000-001) and (Ref. AMM TASK 49-11-11-400-001).
R **ON A/C 001-003, 051-099, 401-499,
B. If there is oil smoke at the exhaust during the operation of the APU:
- do the applicable trouble shooting procedure (Ref. TASK 49-00-00-810-851).
C. Cleaning and Testing
(1) If dirty, clean the APU externally (Ref. AMM TASK 49-20-00-100-001).
NOTE : If an external leak was identified on the APU:
____
- do the repair,
- clean the area,
- start and operate the APU with no bleed air supply and no APU generator load (Ref. AMM TASK 49-00-00-710-004),
- let the APU operate 15 minutes for thermal stabilization,
- do a leak check on the APU with a black light lamp,
- do the APU shutdown (Ref. AMM TASK 49-00-00-710-004),
- immediately after the APU has stopped, examine the area carefully and make sure that there is no leak,
- if there is a leak (the repair was not succesful), do the repair and/or replace as necessary.
- if there is no leak (the repair was successful), continue as
given subsequent. If no external leak was identified on the APU, do the procedure as given subsequent.
(2) If dirty, clean the APU compartment (Ref. AMM TASK 49-20-00-100-001).
(3) If dirty, clean the air intake diverter, the air inlet duct and the air intake diffuser and elbow (Ref. AMM TASK 49-16-00-100-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A242
Config-1 Aug 01/05 CES
(4) Do a check and make sure that the flexible seals on the air intake system are in correct condition (Ref. AMM TASK 49-16-00-210-001) and clean.
(5) Do the cleaning of the APU compressors (Ref. AMM TASK 49-20-00-100-001).
(6) Clean the APU bleed air duct, the pneumatic ducts of the aircraft and the environmental control system (Ref. AMM TASK 21-00-00-615-001) or (Ref. AMM TASK 21-00-00-615-002) and (Ref. AMM TASK 21-00-00-100-001).
(7) Do the pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) and make sure that you do not smell fumes in the cabin and/or there is no oil smoke at the APU exhaust. 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 機載輔助動力 1(50)
