(2)
Depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002).
(3)
Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).
(4)
De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
(5)
Put the warning notices in position.
Yellow Hydraulic System of the THS Actuator 9CE - Flushing Schematic
Figure 313/TASK 12-36-29-991-013
(6) Put the safety barriers in position.
(7)
Put the access platform in position at the Zone 310: Subtask 12-36-29-010-096
B. Get Access
(1)
Open the access door 312AR.
(2)
Open the right MLG door (Ref. TASK 32-12-00-010-001).
(3)
Open the access door 198CB. Subtask 12-36-29-860-087
C. Preparation for the Flushing Procedure
(1)
Put the access platform in position at Zone 148.
(2)
Put the containers in position to collect the hydraulic fluid below:
-
the THS actuator 9CE,
-
the LP manifold 3003GM.
(3)
Remove and discard the lockwire from the hydraulic connections of the valve block (of the Yellow hydraulic system) at the THS actuator 9CE.
(4)
Disconnect the pressure line from the valve block.
(5)
Disconnect the return line from the valve block.
(6)
Disconnect the return line from the LP manifold 3003GM.
(7)
Connect the pressure line to the return line at the THS actuator 9CE with a union.
CAUTION : MAKE SURE THAT THE FLOW RATE AND THE SUPPLY PRESSURE ON THE
_______ GROUND HYDRAULIC CART ARE SET TO A MINIMUM.
(8)
Put the hydraulic power cart in position as necessary.
(9)
Connect the pressure hose of the hydraulic power cart to the delivery connector 3008GM with an adaptor.
(10)
Connect the return hose of the hydraulic power cart to the return line at the LP manifold 3003GM with an adaptor.
(11)
Put blanking plugs on the disconnected line ends.
4. Procedure
_________ (Ref. Fig. 313/TASK 12-36-29-991-013) Subtask 12-36-29-170-062
A. Flush the Yellow hydraulic system.
(1) Operate the hydraulic power cart for 20 s at 20 bar (290.0754 psi).
(2) Stop the hydraulic power cart. Subtask 12-36-29-960-062
B. Replace the LP filter element (Ref. TASK 29-13-44-610-001).
5. Close-up
________ Subtask 12-36-29-860-088
A. Put the system back to the serviceable condition.
(1)
Disconnect the pressure hose of the hydraulic power cart and the adaptor from the delivery connector 3008GM.
(2)
Disconnect the return hose of the hydraulic power cart and the adaptor from the return line at the LP manifold 3003GM.
(3)
Disconnect and remove the union from the pressure and return lines at the THS actuator 9CE.
(4)
Remove the hydraulic power cart.
(5)
Remove the blanking plugs.
(6)
Connect the return line to the LP manifold 3003GM.
(7)
Connect the pressure line to the valve block of the THS actuator 9CE.
(8)
Connect the return line to the valve block of the THS actuator 9CE.
(9)
Safety the connections of the pressure and supply lines with corrosion-resistant steel lockwire 0.8 mm (0.032 in) dia.
Subtask 12-36-29-790-062
B. Leak Test of the Components which were Disconnected
(1)
Pressurize the Yellow hydraulic system (Ref. TASK 29-10-00-863-002).
(2)
Make sure that there is no hydraulic fluid leakage.
(3)
Depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002).
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本文链接地址：A320飞机维护手册 AMM SERVICING 2(112)
