3. Job Set-up__________ 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 Subtask 32-51-51-860-050
 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)
 Subtask 32-51-51-941-050
 B. 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) On the steering handwheels (CAPT and F/O) and on the brake pedals, put warning notice(s) in position to tell persons not to operate them.
 (3) 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, access door (197CB).
 (4) Put the safety barriers in position.
 (5) Put a container below the servo-control to drain the hydraulic fluid. 
R  **ON A/C 401-499, 
R  Subtask 32-51-51-860-050-A 
R  A. Aircraft Maintenance Configuration 
R R R  (1) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001)

R  (2) Depressurize the reservoir of the Yellow hydraulic system. 
R  (Ref. TASK 29-14-00-614-001) 
R  Subtask 32-51-51-941-050-A 
R  B. Safety Precautions 
R  (1) In the cockpit, on the panel 400VU put warning notice(s) in position 
R  to tell persons not to operate the landing gear control lever. 
R  (2) On the steering handwheels (CAPT and F/O) and on the brake pedals, 
R  put warning notice(s) in position to tell persons not to operate 
R  them. 
R  (3) Put the warning notice(s) in position to tell persons not to 
R  pressurize the Yellow hydraulic system: 
R  - on the panel 40VU in the cockpit, 
R  - on the ground service panel of the Yellow hydraulic system, access 
R  door (196BB). 
R  (4) Put the safety barriers in position. 
R  (5) Put a container below the servo-control to drain the hydraulic fluid. 
R  **ON A/C ALL
 Subtask 32-51-51-865-050
 C. 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

 4. Procedure
_________
 (Ref. Fig. 401/TASK 32-51-51-991-001-A) Subtask 32-51-51-020-052-A
 A. Removal of the Servo-Control
 (1)
 Precaution: NOTE : When you remove the rubber protective coating, use a spatula

____ to prevent damage to the surfaces of the components.

 (2)
 Remove the cap (7).

 (3)
 Connect a hose to the valve (6).

 (4)
 Slowly loosen the nut (5) to open the valve (6) and drain the hydraulic fluid.

 (5)
 When no more fluid flows out, remove the hose and tighten the nut (5) to close the valve (6).

 (6)
 Disconnect the hydraulic lines (1), (3), (9) and (10). Put blanking plugs on the disconnected line ends.

 (7)
 Remove the sleeve (11).

 (8)
 Disconnect the electrical connector (2). Put blanking caps on the disconnected electrical connector.

 (9)
 Discard the sleeve (11).

 (10)
 Cut and remove the lockwire. Remove the screws (8).

 (11)
 Remove the servo control (4).

 1EFF : ALL 1 32-51-51Page 404 1 1 Aug 01/05R 1 1 1CES 1

 Nose Wheel Steering Servo-Control Figure 401/TASK 32-51-51-991-001-A
 1EFF : 1 1R 1CES  ALL  1 11 1 32-51-51 Page 405 Aug 01/05

 TASK 32-51-51-400-001
 Installation of the Nose Wheel Steering Servo-Control (6GC)
 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
　
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