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
32-31-14-991-001 Fig. 401
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3. Job Set-up
__________ Subtask 32-31-14-860-051
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)
Subtask 32-31-14-010-050
B. Get Access
(1) Open the doors of the nose landing gear (Ref. TASK 32-22-00-010-001).
(2) Put the access platform in position in zone 123. Subtask 32-31-14-941-050
C. Safety Precautions
(1)
In the cockpit, on the panel 400VU put warning notice(s) in position to tell persons not to operate the landing gear control lever.
(2)
Put the warning notice(s) in position to tell persons not 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).
(3)
Put the safety barriers in position.
(4)
Put a container in position below the NLG door uplock assy (2534GM).
(5)
Obey the applicable safety precautions before you open the LGCIU circuit breakers (Ref. TASK 32-00-00-860-001).
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R Subtask 32-31-14-865-054
R D. Open, safety and tag this(these) circuit breaker(s):
R R R R R R -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
4. Procedure_________
(Ref. Fig. 401/TASK 32-31-14-991-001)
Subtask 32-31-14-020-051
A. Removal of the NLG Door Uplock Assy
WARNING : MAKE SURE THAT THE NLG DOWNLOCK SAFETY PIN AND THE TWO DOOR_______ SAFETY PINS ARE INSTALLED.
(1) Remove the cotter pin (26) and discard it. Remove the nut (27) and the washer (28).
(2) Remove the bolt (25) and disconnect the rod (21).
(3) Remove the cotter pin (6) and discard it. Remove the nut (5) and the washer (4).
(4) Remove the bolt (7) and disconnect the rod (8).
(5) Disconnect the electrical connectors (22) and (23) and put the blanking caps in position.
(6) Disconnect the hydraulic connectors (15) and (16) and put the blanking plugs in position.
(7) Cut and remove the lockwire. Remove the bolt (39) and the washer (38).
(8) Remove the bolt (36) and the washer (35).
(9) Remove the spacer (37). Make sure that you keep the shim between the spacer and the rear flange.
NLG Door Uplock Assy
Figure 401/TASK 32-31-14-991-001
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(10)
Remove the cotter pin (17) and discard it. Remove the nuts (18) and
the washers (24).
(11)
Remove the bolt (13).
(12)
Remove the SAFETY PIN - NLG DOOR (98D32203502000)
(13)
Hold the uplock unit (12) and manually close the NLG doors to half travel to permit passage of the unit.
(14)
Turn the uplock unit (12) and remove it.
(15)
Open the NLG doors again and put the SAFETY PIN - NLG DOOR (98D32203502000) in position.
(16)
Remove and discard the cotter pin (30). Remove the nut (31), the washer (32) and the screw (34). Remove the lever (33).
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