3. Job Set-up
__________
Subtask 32-31-12-860-050
A. Aircraft Maintenance Configuration
(1)
De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2)
Depressurize the Green hydraulic system
(3)
Depressurize the reservoir of the Green hydraulic system (Ref. TASK 29-14-00-614-001).
(4)
Disconnect the PTU isolation coupling (Ref. TASK 29-23-00-860-001). Subtask 32-31-12-010-050
B. Get Access
(1)
Open the right MLG door (Ref. TASK 32-12-00-010-001).
Subtask 32-31-12-869-051
C. Obey the flight configuration precautions (Ref. TASK 32-00-00-860-001).
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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 32-31-12-941-050
E. Safety Precautions
(1)
Put the warning notice(s) 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)
Put the access platform in position.
(3)
Put a container below the L/G selector valve 40GA to collect the hydraulic fluid leakage.
(4)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
4. Procedure
_________
(Ref. Fig. 401/TASK 32-31-12-991-001)
Subtask 32-31-12-020-050
A. Removal of the Selector Valve (3) WARNING : WEAR GOGGLES WHEN YOU REMOVE OR INSTALL THE LOCKWIRE. CUT,
_______ REMOVE AND DISCARD THE LOCKWIRE AS YOU DO THE TASK. LOOSE LOCKWIRE CAN CUT OR BLIND YOU.
(1)
Disconnect the electrical connectors (4).
(2)
Put blanking caps on the disconnected electrical connectors.
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L/G Selector Valve 40GA
Figure 401/TASK 32-31-12-991-001
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1 1 Feb 01/98
1 1
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(3)
Remove and discard the lockwire from the screws (1). NOTE : The lockwire is only installed on the forward screws.
____
(4)
Remove the screws (1) and the washers (2).
(5)
Remove the L/G selector valve (3) from the manifold (5).
(6)
Remove and discard the seals (6).
(7)
Put blanking plugs on the disconnected line ends.
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Installation of the L/G Selector Valve 40GA
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 -------------------------------------------------------------------------------
R No specific Torque Wrench : range 0.00 to 1.20 m.daN
R (0.00 to 9.00 lbf.ft)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific corrosion-resistant steel lockwire 0.8 mm (0.032 in.) dia.
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