Installation of the Nose - Wheel Steering Electrical Deactivation - Box

TASK 32-51-12-400-001-A
Installation of the Nose - Wheel Steering Electrical Deactivation - Box

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.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM. UNWANTED MOVEMENT OF HYDRAULICALLY OPERATED ITEMS CAN CAUSE SERIOUS INJURY AND/OR DAMAGE.

WARNING: PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

ZONE: 711
FIN: 5GC

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

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
711	NOSE GEAR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 32-51-00-720-005-A	Functional Test of the Nose-Wheel-Steering Deactivation Electrical-Box
Nose wheel steering deactivation electrical box

3. Job Set-up
Subtask 32-51-12-941-051-A

A. Safety Precautions
(1) Make sure that the warning notice is on the panel 400VU, to tell persons not to operate the nose landing gear.
(2) On the center pedestal, in the cockpit make sure that the free-fall control handle of the landing gear is in the normal position.

Subtask 32-51-12-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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
121VU	HYDRAULIC/PARK BRK/CTL/NORM	70GG	N36

4. Procedure
Subtask 32-51-12-420-050-A

A. Installation of the Electrical Box
(1) Put the electrical box (1) in position.
(2) Install the screws (4) and the washers (3).
(3) TORQUE the screws (4) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )

.
(4) Remove the blanking cap from the connector (2).
(5) Make sure that all the electrical connections are clean and in the correct condition.
(6) Connect the electrical connector (2) to the electrical box (1).

Subtask 32-51-12-865-052-A

B. Remove the safety clip(s) and the tag(s) and close 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
121VU	HYDRAULIC/PARK BRK/CTL/NORM	70GG	N36

Subtask 32-51-12-720-050-A

C. Test
(1) Do the functional test of the nose wheel steering deactivation electrical-box (Ref. AMM TASK 32-51-00-720-005).

5. Close-up
Subtask 32-51-12-942-050-A

A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 00:51:16 UTC