**ON A/C 001-003, 051-061, 49-11-11-991-003 Fig. 404 R **ON A/C 062-099, 401-499, 49-11-11-991-003-A Fig. 404A
R **ON A/C 001-003, 051-099, 401-499,
3. Job Set-up__________
Subtask 49-11-11-860-059
A. Aircraft Maintenance Configuration
(1)
Put the warning notices on panel 25VU to tell persons not to start the APU.
(2)
Energize the ground service network (Ref. TASK 24-41-00-861-002).
(3)
Make sure that the hydraulic systems are depressurized (Ref. TASK 29-00-00-864-001).
Subtask 49-11-11-740-051
B. Print out of the APU hours and cycles from the DMU.
NOTE : This workstep is only necessary if APU TSO has been monitored.
____
(1)
Use the MCDU and print out the APU hours and cycles (Ref. TASK 31-36-00-740-006).
(2)
Write down the APU hours and cycles in the APU log.
Subtask 49-11-11-865-050
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU APU/FUEL/BLOW OFF/PUMP 2QC B14 121VU APU/OIL/HTR/SPLY 1KT K41 121VU APU/FUEL/BLOW OFF/CTL 1QC K39 121VU APU/FIRE AND OVHT/DET/LOOP A 1WG L43 121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41 121VU APU/AUTO/EXTIG/GND/TEST 30WF L40 121VU APU/FIRE/EXTIG/SQUIB/B 2WF L39 121VU APU/FIRE/EXTIG/SQUIB/A 1WF L38 121VU APU/FIRE/LP VALVE/NORM 4WF M42 121VU APU/FIRE/LP VALVE/STBY 3WF M41 121VU APU/FUEL/LP VALVE/CTL 1QF M40
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/FUEL/LP VALVE/SPLY 2QF M39 121VU APU/FUEL/PUMP/CTL 3QC M38
Subtask 49-11-11-010-050
D. Get Access
(1)
Put the access platform below the access doors 315AL and 316AR.
(2)
Open the APU access doors 315AL, 316AR. (Ref. TASK 52-41-00-010-001)
(3)
Set the light switch 11LJ to on.
(4)
Remove the APU access doors 315AL, 316AR (Ref. TASK 52-41-21-000-001) (Ref. TASK 52-41-22-000-001).
NOTE : The removal of the APU is also possible without a removal of
____ the access doors. However, a removal of the doors will:
-
make the access to the APU compartment better.
-
make the installation and use of the hoist tool easier.
-
reduce the risk of injury to the personal.
-
reduce the risk of damaging the doors with the maintenance platform.
4. Procedure
_________ **ON A/C 001-003, 051-061,
Subtask 49-11-11-020-056
A. Disconnection of the APU
(1)
Disconnection of the APU Bleed-Air Duct Elbow
(a)
Loosen the clamp (2). NOTE : Let the clamp (2) stay loosely on the the bleed-air duct
____
of the APU (1).
(b)
Put blanking caps on the openings of the bleed-air duct elbow (3) and the bleed-air duct of the APU (1).
(2)
Remove the oil-cooler outlet duct and put blanking plugs on the oil cooler outlet and oil cooler duct (Ref. TASK 49-52-41-000-001).
(3)
Disconnect the APU Fuel Line with the Vent and Drain Valve from the APU (Ref. Fig. 401/TASK 49-11-11-991-002)
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
CAUTION : PUT PLASTIC CAPS OR PLUGS ON ALL FUEL AND/OR LUBRICATION
_______ SYSTEM COMPONENTS AND LINES. IF YOU USE TAPE, CLOTH, OR METAL CAPS ON THEM, YOU CAN DAMAGE THE APU. 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM 機載輔助動力 AIRBORNE AUXILIARY POWER2(22)
