Removal of the Nose-Wheel Steering Servo-Control

TASK 32-51-51-000-001-A
Removal of the Nose-Wheel Steering Servo-Control

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

ZONE: 711
FIN: 6GC

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	SPATULA - NON METALLIC
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
711	NOSE GEAR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
Nose-Wheel Steering Servo-Control

3. Job Set-up
Subtask 32-51-51-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001)
(2) Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001)

Subtask 32-51-51-941-050-A ** ON A/C NOT FOR ALL

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 BARRIER(S) in position.
(5) Put a CONTAINER 5 L (1.32 USGAL) below the servo-control to drain the hydraulic fluid.

Subtask 32-51-51-860-050-B ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001)
(2) Depressurize the reservoir of the Yellow hydraulic system.
(Ref. AMM TASK 29-14-00-614-001)

Subtask 32-51-51-941-050-B ** ON A/C NOT FOR ALL

D. 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 Yellow hydraulic system:

on the panel 40VU in the cockpit,
on the ground service panel of the Yellow hydraulic system, access door (196BB).

(4) Put the SAFETY BARRIER(S) in position.
(5) Put a CONTAINER 5 L (1.32 USGAL) below the servo-control to drain the hydraulic fluid.

Subtask 32-51-51-865-050-A

E. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
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
Subtask 32-51-51-020-052-B

A. Removal of the Servo-Control
(1) Precaution:

NOTE: When you remove the rubber protective coating, use a SPATULA - NON METALLIC to prevent damage to the surfaces of the components.

(2) Remove the cap (9).
(3) Connect a hose to the valve (8).
(4) Slowly loosen the nut (7) to open the valve (8) and drain the hydraulic fluid.
(5) When no more fluid flows out, remove the hose and tighten the nut (7) to close the valve (8).
(6) Disconnect the hydraulic couplings (1) and (5) and put the PLUG - BLANKING in position.
(a) Make marks on the pipes to identify their positions and to prevent incorrect connection during the installation.
(7) Disconnect the hydraulic couplings (11) and (12) and put the PLUG - BLANKING in position.
(a) Make marks on the pipes to identify their positions and to prevent incorrect connection during the installation.
(8) Lift the heat shrink sleeve (2) until you can disconnect the electrical connector (4).
(9) Disconnect the electrical connector (4). Put CAP - BLANKING on the disconnected electrical connector.
(10) Removal of the lockwire

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(a) Cut and remove the lockwire.
(11) Remove the screws (10).
(12) Remove the servo control (6).

[Rev.10 from 2021] 2026.04.01 00:51:52 UTC