(3)
On the panel 400VU:
-make sure that the landing-gear control-lever 6GA is in the DOWN position
-put a warning notice in position to tell persons not to operate the landing gear.
(4)
Put warning notices on the ground service connection to tell persons not to pressurize the Green hydraulic system.
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R Normal-Brake Servovalve Figure 401/TASK 32-42-48-991-001
1EFF : 1 1 1CES ALL 1 111 32-42-48 Page 403 Nov 01/98
Subtask 32-42-48-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 4GG M36 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 3GG M35 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 1GG M34 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 2GG M33 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
Subtask 32-42-48-860-053
C. Aircraft Maintenance Configuration
(1)
Disconnect the isolation coupling of the PTU (Ref. TASK 29-23-00-860-001).
(2)
Depressurize the Yellow and Green hydraulic systems (Ref. TASK 29-10-00-864-001) and (Ref. TASK 29-10-00-864-002).
(3)
Depressurize the applicable hydraulic reservoirs (Ref. TASK 29-14-00-614-001).
Subtask 32-42-48-010-050
D. Get Access
(1)
Put an access platform below the applicable servovalve, at zone 730 or 740.
(2)
Put a container below the servovalve.
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4. Procedure
_________
(Ref. Fig. 401/TASK 32-42-48-991-001) Subtask 32-42-48-020-051
A. Removal of the Normal Brake Servovalve
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
CAUTION : MAKE SURE THAT THE FLUID DOES NOT STAY ON THE AIRCRAFT
_______ STRUCTURE. IF THE FLUID GETS ON THE AIRCRAFT STRUCTURE, WASH IT OFF IMMEDIATELY WITH SOAP AND WATER.
(1)
If you are to remove the servovalve 15GG(16GG), disconnect the electrical connector (4) from the servovalve 17GG(18GG).
(2)
Disconnect the electrical connector (4) from the servovalve that is to be removed.
(3)
Put blanking caps on the disconnected electrical connectors.
(4)
Remove the bolts (5) and the servovalve (1).
(5)
Remove and discard the seals (3) and the rings (2).
(6)
Put blanking plugs on the disconnected line ends.
(7)
Put a cover on the normal brake manifold to prevent damage and to keep it clean.
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Installation of the Normal Brake Servovalve
WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
_______
NOTICES ARE IN POSITION.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
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
No specific Milliohmmeter Megger, Type BT51
No specific access platform 2.5 m (8 ft. 2 in.)
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 -------------------------------------------------------------------------------
Material No. 02-003 F NSA 307110 TYPE 4
HYDRAULIC FLUID (PHOSPHATE ESTER BASE)
(Ref. 20-31-00)
Material No. 11-026 GB DEF-STAN 68-148/1
SOLVENT GENERAL PURPOSE (Ref. 20-31-00)
Material No. 19-003 USA AMS 3819
LINT-FREE COTTON CLOTH (Ref. 20-31-00)
1EFF : ALL 1 32-42-48Page 406 1 1 May 01/05 1 1 1CES 1
C. Expendable Parts
-------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION |IPC-CSN
-------------------------------------------------------------------------------
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