B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 32-00-00-481-001 Installation of the Safety Devices on the Landing
Gears 32-42-77-991-001 Fig. 401
3. Job Set-up
__________
Subtask 32-42-77-941-055
A. Safety Precautions
(1)
Put the safety barriers in position.
(2)
Make sure that the ground safety locks are on the landing gear (Ref. TASK 32-00-00-481-001).
(3)
On panel 400VU:
-Make sure that the landing-gear control-lever 6GA is in the DOWN position.
-Put a warning notice in position to tell persons not to operate the landing gear.
(4)
On panel 110VU:
-Make sure that the free-fall extension-control-handle is in the normal position.
(5)
Put a warning notice in position to tell persons not to pressurize the hydraulic systems.
Subtask 32-42-77-864-050
B. Depressurization of the Applicable Hydraulic System(s)
(1)
Depressurize the Green hydraulic system (Ref. TASK 29-00-00-864-001).
(2)
Depressurize the applicable hydraulic reservoirs (Ref. TASK 29-14-00-614-001).
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C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 4GG M36 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 3GG M35 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 1GG M34 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 2GG M33
Subtask 32-42-77-941-054
D. Get Access
(Ref. Fig. 401/TASK 32-42-77-991-001)
(1)
Put the access platform in position below the applicable zone 571 or
671.
(2)
Put a container below the check valve (3).
4. Procedure
_________ (Ref. Fig. 401/TASK 32-42-77-991-001) Subtask 32-42-77-020-050
A. Removal of the Normal Brake-Return Check-Valve WARNING : DO NOT LET OIL STAY ON YOUR SKIN FOR A LONG TIME AS IT CAN
_______
CAUSE INJURY.
CAUTION : MAKE SURE THAT THE FLUID DOES NOT STAY ON THE AIRCRAFT
_______ STRUCTURE. IF THE FLUID GETS ON THE AIRCRAFT STRUCTURE, WASH IT OFF IMMEDIATELY WITH SOAP AND WATER.
(1)
Loosen and disconnect the coupling nut (2).
(2)
Put blanking plugs on the disconnected line ends.
(3)
Remove the check valve (3) from the manifold (5).
(4)
Remove and discard the O-ring (4) from the check valve (3).
(5)
Put blanking caps on the open ports of the check valve (3) and the manifold (5).
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Check Valve 2593GM (2594GM)
Figure 401/TASK 32-42-77-991-001
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1 1 Feb 01/98
1 1
1CES 1
TASK 32-42-77-400-001
Installation of the Normal Brake-Return Check-Valve
WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
_______
NOTICES ARE IN POSITION.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
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