(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) Make sure that the PTU does not operate.
(9) 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).
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(2) Look for the Green hydraulic system pressure indication on the lower ECAM DU.
4. Fault Isolation
_______________
A. If the fault confirmation gives:
- the hydraulic system pressure indication on the lower ECAM DU shows a higher value than normal:
(1) Stop the dry motoring of the left (No.1) engine (Ref. AMM TASK 71-00-00-710-001).
(2) Pressurize the Green hydraulic system with a GROUND POWER UNIT -HYDRAULIC (Ref. AMM TASK 29-10-00-863-001).
(3) Look for the hydraulic system pressure indication on the lower ECAM DU.
(4) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
(a) If the system pressure is in the normal range:
- Replace the FILTER-ENG PUMP CASE DRAIN (1084GM) (Ref. AMM TASK 29-11-43-610-041).
1 If the fault continues:
_ a Replace the PUMP-G, ENG 1 (1030GK) (Ref. AMM TASK 29-11-51-
_ 000-041) and (Ref. AMM TASK 29-11-51-400-041).
(b) If the hydraulic system pressure is to high:
- Replace the PRESS XDCR-G (1065GN) (Ref. AMM TASK 29-32-11-000-001) and (Ref. AMM TASK 29-32-11-400-001).
1 If the fault continues:
_ a Replace the FILTER-HP, G (1048GM) (Ref. AMM TASK 29-11-45-
_
610-001).
2 If the fault continues:
_ a Replace the SDAC-1 (1WV1) or SDAC-2 (1WV2) (Ref. AMM TASK
_ 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
B. Do the fault confirmation procedure as given in Para. 3. to make sure that the operation is correct.
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CES 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).
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GREEN MAIN HYDRAULIC POWER - TASK SUPPORTING DATA
_________________________________________________
1. System Description
__________________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
(Ref. Fig. 301)
R **ON A/C 401-499,
R (Ref. Fig. 301A)
R **ON A/C ALL
The Green main hydraulic system has the subsequent sub-systems:
- a HP system which supplies the consumers,
- a LP or return system through which the fluid returns to the reservoir,
- a suction system.
A. HP System The HP system is usually pressurized by an engine-driven pump (EDP) 1030GK connected to the left (No 1) engine. The EDP is connected directly to the engine and operates together with it. A solenoid valve makes it possible to stop the supply of fluid from the EDP. The solenoid valve is operated from the flight compartment with the P/B switch 1705GK.
The power transfer unit (PTU) 1088GM can also pressurize the Green HP circuit. The PTU gets its power from the Yellow main system. It supplies power to the Green system automatically if the system pressure falls to 500 psi (34.5 bar) below the pressure in the Yellow system. There is no hydraulic connection between the two systems so fluid can not get from one system to the other.
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