R AMM 29-19-51-000-003 Removal of the Leakage-Measurement Solenoid Valve
R (3150GP)
R AMM 29-19-51-400-003 Installation of the Leakage-Measurement Solenoid
R Valve (3150GP)
AMM 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) AMM 29-23-00-860-002 Connection of the Isolation Coupling of the Power Transfer Unit (PTU) AMM 29-24-00-863-001 Pressurize the Yellow Hydraulic System with the
Electric Pump AMM 29-24-00-864-001 Depressurize the Yellow Hydraulic System AMM 29-32-12-000-003 Removal of the System Pressure Switch (3151GN) AMM 29-32-12-400-003 Installation of the System Pressure Switch (3151GN) ASM 29-19/01 ASM 29-24/01 ASM 29-32/01 ASM 31-52/02
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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/Y HYD/PUMP ENG2/MONG 3700GD Q37 121VU HYDRAULIC/Y HYD/PUMP ENG2/CTL 3701GD Q36
B. Aircraft Maintenance Configuration
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
(1) Disconnect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-001).
(2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(3) On panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y pushbutton switch is set to on (OFF light not on).
(4) Pressurize the Yellow hydraulic system from a ground supply or with the Yellow electric pump (Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-24-00-863-001).
(5) Look for fault indications on the lower ECAM DU.
4. Fault Isolation
_______________
A. If the fault confirmation gives:
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.
- the system name and the flow arrow of the Yellow hydraulic system in amber on the lower ECAM DU:
- do a check of the system pressure on the lower ECAM DU and on the system accumulator gage (3072GM).
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CES (1) If the system pressure is more than 1450 psi:
- use the rudder pedals to operate the rudder.
(a) If the rudder operates:
- do a check for continuity between the: the PRESS SW-FLT CTL, Y (3151GN) connector A/A and the connector A/C (with the hydraulic system pressurized) (Ref. ASM 29-32/01).
1 If there is continuity:
_
- replace the PRESS SW-FLT CTL, Y (3151GN) (Ref. AMM TASK 29-32-12-000-003) and (Ref. AMM TASK 29-32-12-400-003).
2 If there is no continuity:
_
- do a check and repair the wiring between the: PRESS SW-FLT CTL, Y (3151GN) connector A/C and FWC-1/ FWC-2 connector AD/06E (Ref. ASM 29-32/01) and (Ref. ASM 31-52/02).
(b) If the rudder does not operate:
- do a check for 28 VDC at the: the SOL VALVE-LEAKAGE MEAS, Y (3150GP) connector A/A and the connector A/B. (Ref. ASM 29-19/01).
NOTE : There is normally 0 VDC.
____
1 If there is 28 VDC:
_
- do a check for 28 VDC between: the relay (3811GX) connector X1 and X2.
a If there is 28 VDC:
_
- do a check and repair the wiring between the: relay (3811GX) connector X1 and the HYD YELLOW ELEC PUMP pushbutton switch (3804GX) connector A3 (Ref. ASM 29-19/01) and (Ref. ASM 29-24/01).
b If there is no 28 VDC:
_
- replace the CTL RELAY (3811GX).
(c) If the fault continues:
- replace the TIME DELAY RELAY (3816GX).
(d) If the fault continues:
- replace the TIME DELAY RELAY (6MJ).
(e) If the fault continues:
- do a check for 28 VDC between: the pushbutton switch (1883GP) connector C2 and the connector C3.
1 If there is continuity:
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