TASK 32-31-57-400-001
Installation of the NLG Door Opening Restrictor Valve (2535GM)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific safety barriers
No specific warning notice(s)
No specific access platform 2.06 m (6 ft. 9 in.)
No specific container 5 l (1.3208 USgal)
No specific Torque Wrench : range 0.20 to 3.60 m.daN
(2.00 to 26.00 lbf.ft)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 12-12-29-611-002 Fill the Hydraulic Fluid Reservoir with a Hydraulic
Service Cart 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 32-22-00-010-001 Nose Gear Doors - Ground Doors Opening 32-22-00-410-001 Nose Gear Doors - Ground Doors Closing 32-31-57-991-001 Fig. 401
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3. Job Set-up
__________ Subtask 32-31-57-860-050
A. Aircraft Maintenance Configuration
(1)
Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001)
(2)
Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. TASK 29-14-00-614-001).
(3)
In the cockpit, on the panel 400VU, make sure that the warning notice(s) is (are) in position to tell persons not to operate the landing gear control lever.
(4)
Make sure that the warning notice(s) is (are) in position to tell persons not to pressurize the Green hydraulic system: - on the panel 40VU in the cockpit, - on the ground service panel of the Green hydraulic system, access
door (197CB).
(5)
Make sure that the safety barriers are in position.
(6)
Make sure that the doors of the nose landing gear are open (Ref. TASK 32-22-00-010-001).
(7)
Make sure that the access platform is in position in zone 123.
(8)
Make sure that the container is in position below the restrictor valve (2535GM) to collect the hydraulic fluid leakage.
4. Procedure
_________ (Ref. Fig. 401/TASK 32-31-57-991-001) Subtask 32-31-57-420-050
A. Installation of the Restrictor Valve
(1)
Remove the blanking plug and install the restrictor valve (2) on the hydraulic line (1).
(2)
TORQUE the restrictor valve (2) (inlet connection) to 1.67 m.daN
(12.31 lbf.ft).
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(3)
Remove the blanking plug and connect the hydraulic line (3) to the restrictor valve (2).
(4)
TORQUE the union (3) (outlet connection) to 2.18 m.daN (16.07 lbf.ft).
Subtask 32-31-57-942-051
B. Preparation for the Test
(1) Remove the container.
(2) Remove the access platform(s). Subtask 32-31-57-720-050
C. Functional Test
(1)
Close the NLG doors (Ref. TASK 32-22-00-410-001).
(2)
Open the NLG doors (Ref. TASK 32-22-00-010-001).
(3)
Make sure that there is no hydraulic fluid leakage from the restrictor valve (2535GM).
(4)
If necessary fill the reservoir of the Green hydraulic system to the correct level (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).
5. Close-up
________ Subtask 32-31-57-410-050
A. Close Access
(1)
Remove the warning notice(s).
(2)
Make sure that the work area is clean and clear of tool(s) and other items.
(3)
Close the nose gear doors (Ref. TASK 32-22-00-410-001).
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RESTRICTOR - NLG DOOR CLOSING (2536GM) - REMOVAL/INSTALLATION
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TASK 32-31-58-000-001 Removal of the NLG Door Closing Restrictor WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
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