- replace the pushbutton switch (1883GP).
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2_ If there is no continuity: - do a check and repair the wiring between the: pushbutton switch (1883GP) connector C3 and the CB (1881GP) (Ref. ASM 29-19/01).
R R R (f) If the fault continues: - Replace the SOL VALVE-LEAKAGE MEAS, Y (3150GP) (Ref. AMM TASK 29-19-51-000-003) and (Ref. AMM TASK 29-19-51-400-003).
(2) If the pressure is less than 1450 psi: - do a check for external leakage and repair the components as necessary.
B. Do the fault confirmation procedure as given in Para. 3. to make sure that operation is correct.
5. Close-up________
A. Aircraft Maintenance Configuration
(1) De-pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002) or (Ref. AMM TASK 29-24-00-864-001).
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(3) Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002).
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TASK 29-13-00-810-807
Symbol of the Eng 2 Pump on the ECAM Lower DU shows the incorrect Position
1. Possible Causes
_______________
- PRESSURE SWITCH-ENGINE PUMP 3074GD
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 29-13-00-710-002 Operational Test of the Yellow Hydraulic System AMM 29-13-17-000-041 Removal of the Engine-Pump Pressure Switch (3074GD) AMM 29-13-17-400-041 Installation of the Engine-Pump Pressure Switch
(3074GD)
3. Fault Confirmation
__________________
A. Do the operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
4. Fault Isolation
_______________
A. If during the test the Eng 2 pump symbol on the HYD page of the lower ECAM DU shows LO in amber color and the system pressure is correct:
- replace the PRESSURE SWITCH-ENGINE PUMP 3074GD (Ref. AMM TASK 29-13-17-000-041) and (Ref. AMM TASK 29-13-17-400-041).
B. If after the test the Eng 2 pump symbol on the HYD page of the lower ECAM DU shows IN-Line in green color:
- replace the PRESSURE SWITCH-ENGINE PUMP 3074GD (Ref. AMM TASK 29-13-17-000-041) and (Ref. AMM TASK 29-13-17-400-041).
C. Do the test given in Para. 3
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TASK 29-13-00-810-809
Fault of the System Pressure Indication of the Yellow Hydraulic System on the ECAM Lower DU
1. Possible Causes
_______________
- PRESSURE TRANSDUCER-HYDRAULIC (3065GN)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 29-32-11-000-003 Removal of the Hydraulic Pressure Transmitter
(3065GN) AMM 29-32-11-400-003 Installation of the Hydraulic Pressure Transmitter (3065GN)
3. Fault Confirmation
__________________
A. Test
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) Pressurize the Yellow hydraulic system with the E-pump (Ref. AMM TASK 29-24-00-863-001).
(2) Operate the rudder pedals.
(3) Make sure that the rudder operates.
(4) De-pressurize the Yellow hydraulic System (Ref. AMM TASK 29-24-00-864-001).
4. Fault Isolation
_______________
A. If, during the test, the operation of the rudder is correct, but the HYD page on the ECAM lower DU shows for the Yellow hydraulic system the subsequent condition: the system pressure indication in amber (less than 1450 PSI), the system pressure identification (YELLOW) in white, the system arrow in green. 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(69)
