(4)
Install the new back-up rings (5) and the new packings (6) on the bobbins (Ref. TASK 20-23-21-911-001).
(5)
Put the safety valves (1) and (7) in position on the manifold (8). NOTE : Make sure that you do not damage the packings when you install
____
the valves.
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(6)
Install the bolts (10) and the washers (9).
(7)
Install the bolts (11) and the washers (9).
(8)
TORQUE the bolts (10) and (11) to between 0.6 and 0.7 m.daN (53.09 and 61.94 lbf.in).
(9)
Mark the bolts with PAINTS FOR DETAIL (INTERNAL AND EXTERN AL) (Material No. 07-010).
Subtask 32-31-19-860-052
B. Preparation for Test
(1)
Connect the PTU isolation coupling (Ref. TASK 29-23-00-860-002).
(2)
If the flight configuration precautions were obeyed, put the aircraft back to the serviceable condition (Ref. TASK 32-00-00-860-002).
(3)
Remove the container.
(4)
Remove the warning notice(s).
(5)
Remove the access platform(s).
(6)
Close the left MLG door (Ref. TASK 32-12-00-410-001).
(7)
If necessary fill the reservoir of the Green hydraulic system to the correct level (Ref. TASK 12-12-29-611-001).
Subtask 32-31-19-865-053
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1GA, 2GA, 52GA, 1701GK, 1702GK.
Subtask 32-31-19-710-051
D. Test of the Valves and Manifold Assy
(1)
Do the operational test of the landing gear doors (Ref. TASK 32-31-00-710-002).
(2)
Do the functional test of the nose wheel steering (Ref. TASK 32-51-00-720-003).
(3)
Open the left MLG door (Ref. TASK 32-12-00-010-001).
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(4) Make sure that there is no hydraulic fluid leakage from the safety valves 2629GM and 2630GM. ________
5. Close-up
Subtask 32-31-19-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tools and other items.
(2)
Apply corrosion preventive compound to the heads of the bolts (6) and
(7) and the adjacent area (Ref. TASK 51-75-13-916-002).
(3)
Remove the access platform(s).
(4)
Close the left MLG door (Ref. TASK 32-12-00-410-001).
(5)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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_________________________________________________
TASK 32-31-21-000-001
Removal of the NLG Uplock Assy (2530GM)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific blanking plugs
No specific circuit breaker(s) safety clip(s)
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)
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 R 32-00-00-860-001 Flight Configuration Precautions with Electrical R Power
32-22-00-010-001 Nose Gear Doors - Ground Doors Opening
32-31-21-991-001 Fig. 401
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3. Job Set-up
__________ Subtask 32-31-21-860-050
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)
Depressurize the reservoir of the Green hydraulic system. (Ref. TASK 29-14-00-614-001)
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