(b) If the system pressure does not increase:
1_ On panel 50VU, set the HYD/LEAK MEASUREMENT VALVES/B
pushbutton switch to off (ON light not on).
2_ De-pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-
00-864-003).
3_ do a check of the internal leakage of the Blue hydraulic
system (Ref. AMM TASK 29-00-00-280-002) and do the necessary
actions.
- replace the ELEC PUMP-B (2075GJ) (Ref. AMM TASK 29-12-51-000-001) and (Ref. AMM TASK 29-12-51-400-001).
NOTE : Replace the ELEC PUMP-B (2075GJ) with the ELEC PUMP-Y
____ (3075GX) which is interchangeable, if a new pump is not available (Ref. AMM TASK 29-24-51-000-001) and (Ref. AMM TASK 29-24-51-400-001).
(c) If the fault continues, obey the subsequent causes:
- The internal leakage in the Blue hydraulic system is a bit higher than usual (special for older A/C).
- There is an additional ECAM tolerance of +/- 50psi, the system pressure indication on the ECAM is in 50 psi steps.
B. Do the fault confirmation procedure as given in Para. 3. to make sure that operation is correct.
5. Close-up
________
A. Put the aircraft back to the serviceable condition.
(1) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞29-12-00∞∞∞∞∞∞∞∞∞∞Page 237
Aug 01/05R
CES
INTENTIONALLY BLANK
「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 ∞∞29-12-00∞∞∞∞∞∞∞∞∞∞Page 238
May 01/05 CES
TASK 29-12-00-810-812
Blue Reservoir Pressure is out of Tolerance
1. Possible Causes
_______________
- PRESSURE REDUCING VALVE
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. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 12-32-29-281-001 Hydraulic Fluid Sample of Green,Blue and Yellow Systems for Analysis AMM 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action AMM 29-14-00-720-001 Functional Test of the Pressurizing System of the
Hydraulic Reservoirs
AMM 29-14-43-000-001 Removal of the Pressure Reducing Valve
AMM 29-14-43-400-001 Installation of the Pressure Reducing Valve
AMM 32-12-00-010-001 Open the Main Gear Doors for Access
3. Fault Confirmation
__________________
A. 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 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞29-12-00∞∞∞∞∞∞∞∞∞∞Page 239
Feb 01/03R CES
B. Aircraft Maintenance Configuration
(1) Depressurize the Green, Yellow and Blue hydraulic systems, but not the reservoirs (Ref. AMM TASK 29-00-00-864-001).
(2) 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.
(3) Open the access doors 196BB and 197FB.
(4) Open the right main door of the main landing gear (Ref. AMM TASK 32-12-00-010-001).
(5) Read the pressure gages (1383GM, 2383GM, 3383GM) on each hydraulic reservoir. 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 液壓(50)
