the Ground Connector
AMM 29-23-00-863-001 Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
AMM 29-23-00-864-001 Depressurize the Green and Yellow Hydraulic Systems
after Operation of the PTU
AMM 31-60-00-860-001 EIS Start Procedure
AMM 31-60-00-860-002 EIS Stop Procedure
AMM 71-00-00-710-001 Dry Motoring Check
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST 1881GP N35 121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
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B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(3) On the ECAM control panel on the center pedestal, press the HYD pushbutton. Make sure that the HYD page is shown on the ECAM lower Display Unit (DU).
(4) Make sure that the ECAM does not show any of these conditions:
- low air pressure in the Green reservoir,
- low fluid level in the Green reservoir.
(5) If necessary, pressurize the reservoir (Ref. AMM TASK 29-14-00-614-002).
(6) If necessary, add fluid to the reservoir (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(7) On the overhead panel 40VU, press the PTU/AUTO P/BSW (the OFF light comes on).
(8) On the overhead panel 40VU, make sure that the GREEN/ENG 1 PUMP P/BSW is set to on (FAULT and OFF lights are off).
C. Test
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______
ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC
SYSTEM.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS ARE
_______ CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.
(1) Dry-motor the left (No. 1) engine (Ref. AMM TASK 71-00-00-710-001).
(2) Look for the Green hydraulic system pressure indication on the lower ECAM DU.
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CES
4. Fault Isolation
_______________
A. If the fault confirmation gives:
- a system pressure indication of 2750 psi on the lower ECAM DU:
(1) On panel 50VU, set the HYD/LEAK MEASUREMENT VALVES/G pushbutton switch to on (OFF light not on).
(a) If the system pressure increases: 1 Stop the dry-motoring of the left (No. 1) engine.
_ 2 Do a check of the internal leakage of the Green hydraulic
_ system (Ref. AMM TASK 29-00-00-280-001) and do the necessary actions.
(b) If the system pressure does not increase: 1 Pressurize the Green hydraulic system from the Yellow
_ hydraulic system through the PTU with the electric pump (Ref. AMM TASK 29-23-00-863-001).
2 Look for the system pressure indication on the lower ECAM DU.
_
(c) If the system pressure increases to more than 2750 psi: 1 Depressurize the Green hydraulic system (Ref. AMM TASK 29-23-
_
00-864-001).
2 Replace the PUMP-G, ENG 1 (1030GK) (Ref. AMM TASK 29-11-51- 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 液压(27)
