3. Job Set-up
__________ Subtask 29-19-51-865-056
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST 1881GP N35
Subtask 29-19-51-010-052
B. Open the access panel 196BB. Subtask 29-19-51-860-052
C. Aircraft Maintenance Configuration
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(3)
Depressurize the reservoir of the Yellow hydraulic system. (Ref. TASK 29-14-00-614-001).
(4)
Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).
Subtask 29-19-51-941-052
D. Safety Precautions
(1)
Put the warning notices in position to tell persons not to pressurize the Yellow hydraulic system:
-in the cockpit on the hydraulic section 40VU of the overhead panel, - on the ground service panel of the Yellow hydraulic system.
(2)
Put the container in position below the leakage-measurement solenoid valve (referred to as solenoid valve) to collect the hydraulic fluid.
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4. Procedure
_________
(Ref. Fig. 403/TASK 29-19-51-991-001) Subtask 29-19-51-020-052
A. Removal of the Solenoid Valve 3150GP
(1)
Disconnect the electrical connector (1).
(2)
Put blanking caps on the disconnected electrical connector (1) and on the receptacle.
(3)
Remove the nut (2), the washer (3), the bolt (4) and the bonding strap (5) from the solenoid valve (6).
(4)
Hold the solenoid valve (6) and remove the three bolts (7) and the washers (8).
(5)
Remove the solenoid valve (6).
(6)
Remove the bobbins (10), (11) (Ref. TASK 20-23-21-911-001).
(7)
Install blanking plugs in the open ports of the manifold and the solenoid valve (6).
(8)
Remove and discard the square-section seals (16), (21), the O-rings (18), (19) and the back-up rings (17), (9), (20), (12).
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Leakage Measurement Solenoid Valve
Figure 403/TASK 29-19-51-991-001
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TASK 29-19-51-400-003 Installation of the Leakage-Measurement Solenoid Valve (3150GP) 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 GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM HYDRAULIC POWER 液壓5(84)
