Subtask 12-36-29-860-057
C. Preparation for the Flushing Procedure
(1)
Put the warning notices in position.
(2)
Put the safety barriers in position.
(3)
Put the access platform in position at the Zone 195.
(4)
Put the access platform in position at the Zone 197.
(5)
Put the containers in position to collect the hydraulic fluid below:
-
the electrically driven pump 2075GJ,
-
the case drain filter 2084GM,
-
the LP filter 2002GM,
-
the check valve 2041GM.
(6)
Disconnect the case-drain lower line from the electrically driven pump 2075GJ.
(7)
Disconnect the pressure line from the electrically driven pump
2075GJ.
(8)
Disconnect the case-drain lower line from the check valve 2041GM.
(9)
Disconnect the case-drain upper line from the case-drain filter 2084GM.
(10)
Disconnect the case-drain upper line from the LP filter 2002GM.
(11)
Connect the pressure line and the case-drain lower line together with a union.
(12)
Put the hydraulic power cart in position as necessary. CAUTION : MAKE SURE THAT THE FLOW RATE AND THE SUPPLY PRESSURE ON THE
_______
GROUND HYDRAULIC CART ARE SET TO A MINIMUM.
(13)
Connect the pressure hose of the hydraulic power cart to the check valve end of the case-drain lower line with an adaptor.
(14)
Connect the return hose of the hydraulic power cart to the delivery connector 2008GM with an adaptor.
(15)
Put blanking plugs on the disconnected line ends.
4. Procedure
_________
(Ref. Fig. 303/TASK 12-36-29-991-003) Subtask 12-36-29-170-052
A. Flush the Blue hydraulic system.
(1)
Operate the hydraulic power cart for 20 s at 20 bar (290.0754 psi).
(2)
Stop the hydraulic power cart.
(3)
Disconnect the pressure hose of the hydraulic power cart and the adaptor from the case-drain lower line.
(4)
Disconnect the return hose of the hydraulic power cart and the adaptor from the delivery connector 2008GM.
(5)
Remove the blanking plugs. CAUTION : MAKE SURE THAT THE FLOW RATE AND THE SUPPLY PRESSURE ON THE
_______ GROUND HYDRAULIC CART ARE SET TO A MINIMUM.
(6)
Connect the pressure hose (of the hydraulic power cart) to the case-drain filter 2084GM end of the case-drain upper line with an adaptor.
(7)
Connect the return hose (of the hydraulic power cart) to the LP filter 2002GM end of the case-drain upper line with an adaptor.
(8)
Put blanking plugs on the disconnected line ends.
(9)
Operate the hydraulic power cart for 20 s at 20 bar (290.0754 psi).
(10) Stop the hydraulic power cart. Subtask 12-36-29-960-052
B. Replace the subsequent components:
(1)
The HP filter element (Ref. TASK 29-12-45-610-001).
(2)
The case-drain filter element (Ref. TASK 29-12-43-610-001).
5. Close-up
________
Subtask 12-36-29-860-058
A. Put the system back to the serviceable condition.
(1)
Disconnect the pressure and return hoses of the hydraulic power cart and the adaptors from the case-drain upper line.
(2)
Disconnect and remove the union from the pressure line and the case-drain lower line.
(3)
Remove the hydraulic power cart.
(4)
Remove the blanking plugs.
(5)
Connect the case-drain upper line to the LP filter 2002GM.
(6)
Connect the case-drain upper line to the case drain filter 2084GM.
(7)
Connect the case-drain lower line to the check valve 2041GM. NOTE : The check valve 2041GM is not in the flush circuit. If it is
____
necessary remove and clean it.
(8)
Connect the pressure line and the case-drain lower line to the electrically driven pump 2075GJ.
Subtask 12-36-29-790-052
B. Leak Test of the Components which were Disconnected
(1)
Pressurize the Blue hydraulic system (Ref. TASK 29-10-00-863-003).
(2)
Make sure that there is no hydraulic fluid leakage.
(3)
Depressurize the Blue hydraulic system (Ref. TASK 29-10-00-864-003). Subtask 12-36-29-942-091
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