3. Job Set-up
__________
Subtask 29-10-00-860-057
A. Aircraft Maintenance Configuration
(1)
Make sure the aircraft is in this configuration:
-speed brakes and spoilers retracted,
-thrust reversers off (closed),
-cargo compartment door closed,
-all accumulators empty of fluid and pressurized with nitrogen to the correct pressure,
-reservoirs pressurized to 50 psig,
-landing gear extended with the doors closed (one main door of the main gear can be open),
-the position of the other hydraulic services is not important.
(2)
Depressurize the Green, Yellow and Blue hydraulic systems, but not the reservoirs (Ref. TASK 29-00-00-864-001).
(3)
Put the warning notices in position to tell persons not to pressurize the hydraulic systems
-in the flight compartment on the hydraulic section 40VU of the overhead panel,
- on the ground service panels of the Green, Yellow and Blue hydraulic systems.
Subtask 29-10-00-865-054
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU B HYD/ELEC PUMP 2701GJ AB09 123VU Y HYD/ELEC/PUMP 3802GX AB06
R 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03 Subtask 29-10-00-010-054
C. Get Access
(1) Open one main door of the main landing gear (Ref. TASK 32-12-00-010-001).
NOTE : You can open any door, but the access is better from the RH
____
side.
(2) Open the access doors 196BB, 197FB.
4. Procedure
_________
Subtask 29-10-00-210-051
A. Do a Check of the Fluid Level in the Hydraulic Reservoirs
(1) Look at the contents indicator on each reservoir and make sure that it shows:
-
Yellow reservoir (with the brake accumulator empty of fluid and precharged with nitrogen) - 15 l
-
Yellow reservoir (with the brake accumulator full of fluid at system working pressure) - 12 l
-Green reservoir - 14 l
-Blue reservoir - 6 l
NOTE : These levels are for fluid temperatures between 10 and 20
____ deg.C (50 and 68 deg.F). If the temperature is out of these limits, the volume of the fluid changes:
-0.5 l for 10 deg.C (18 deg.F) in the Green and Yellow hydraulic systems,
-0.25 l for 10 deg.C (18 deg.F) in the Blue hydraulic system.
(2) If the contents of the reservoirs are not correct, fill or drain the reservoir(s) as necessary (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).
5. Close-up
________ Subtask 29-10-00-410-054
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the main door of the main landing gear (Ref. TASK 32-12-00-410-001).
(3)
Close the access doors 196BB, 197FB.
(4)
Remove the warning notice(s). Subtask 29-10-00-865-055
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 2701GJ, 2702GJ, 3801GX, 3802GX, 3803GX
TASK 29-10-00-200-002 R Check Reservoir Air Pressure on Reservoir Gauge WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
NOTE : Do this check less than 12 hours after shut-down of the bleed-air
____
pressurization system (engines and APU).
1.
Reason for the Job
__________________
Refer to the MPD TASK: 291000-02
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific warning notices
B. Consumable Materials 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 HYDRAULIC POWER 液壓1(118)
