UPLOCK ASSY - MLG DOOR (2520GM,2521GM) - REMOVAL/INSTALLATION
_____________________________________________________________
TASK 32-31-33-000-001
Removal of the MLG Door Uplock 2521GM (2520GM)
WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
_______ YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT.
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
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 warning notices
No specific access platform(s) 1.5 m (4 ft. 11 in.)
No specific container 5 l (1.3208 USgal)
1EFF : ALL 1 32-31-33Page 401 1 1 Feb 01/98 1 1 1CES 1
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-910-002 Safety Procedures of the Hydraulic System 29-10-00-864-001 Depressurize the Green Hydraulic System 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power
Transfer Unit (PTU) 32-00-00-860-001 Flight Configuration Precautions 32-12-00-010-001 Open the Main Gear Doors for Access 32-31-33-991-001 Fig. 401
3. Job Set-up
__________ Subtask 32-31-33-860-050
A. Aircraft Maintenance Configuration
(1)
Depressurize the Green hydraulic system (Ref. TASK 29-10-00-864-001). Subtask 32-31-33-010-050
B. Get Access
(1)
Open the applicable MLG door (Ref. TASK 32-12-00-010-001). Subtask 32-31-33-869-051
C. Disconnection of the Hydraulic System PTU
(1)
Disconnect the PTU isolation coupling (Ref. TASK 29-23-00-860-001).
(2)
Obey the flight configuration precautions (Ref. TASK 32-00-00-860-001).
(3)
Put the access platform(s) in position.
(4)
Put the container below the MLG door uplock to collect the hydraulic fluid leakage.
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D. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
R 49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34 121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
Subtask 32-31-33-941-050
E. Safety Precautions
(1)
Put the warning notices 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.
(2)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
4. Procedure
_________
(Ref. Fig. 401/TASK 32-31-33-991-001)
Subtask 32-31-33-020-050
A. Removal of the MLG Door Uplock 2521GM (2520GM)
(1)
Disconnect the electrical connectors (12) and (13) from the MLG door uplock (11).
(2)
Put blanking caps on the disconnected electrical connectors.
(3)
Disconnect the hydraulic pipes (10) and (14) from the MLG door uplock (11).
(4)
Put blanking plugs on the disconnected line ends.
(5)
Remove the nut (15), the bolt (19), the washers (16) and (18) and the bonding strap (17) from the MLG door uplock (11).
(6)
Remove and discard the cotter pin (24).
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MLG Door Uplock 2521GM (2520GM)
Figure 401/TASK 32-31-33-991-001
1EFF : ALL 1 32-31-33 Page 404
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