Hydraulic or Mechanical Failure of the Nose Wheel Steering System

TASK 32-51-00-810-824-A
Hydraulic or Mechanical Failure of the Nose Wheel Steering System

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 32-21-00-200-002	General Visual Inspection of the Nose Landing Gear
AMM 32-51-00-720-003	Functional Test of the Nose Wheel Steering with the Handwheel
AMM 32-51-15-000-001	Removal of the Swivel Selector Valve
AMM 32-51-15-400-001	Installation of the Swivel Selector Valve
AMM 32-51-42-000-001	Removal of the Nose-Wheel Steering Cylinder
AMM 32-51-42-400-001	Installation of the Nose-Wheel Steering Cylinder
AMM 32-51-51-000-001	Removal of the Nose-Wheel Steering Servo-Control
AMM 32-51-51-400-001	Installation of the Nose-Wheel Steering Servo-Control

3. Fault Confirmation
Subtask 32-51-00-710-052-A

A. Test
(1) Not applicable, the fault is evident.

4. Fault Isolation
Subtask 32-51-00-810-077-A

A. If the nose wheel is free castor:

NOTE: Before you start the procedure, make sure that the ground towing lever on the electrical box (5GC) is not in the towing position.

do a check of the steering hydraulic system for leakage on:
. the rotating joint
. the N/W steering servo control (6GC)
. the hydraulic pipes
. the nose wheel steering cylinders.

(1) If there are leaks:

replace the defective component:
. the rotating joint AMM 32-51-15-000-001 AMM 32-51-15-400-001
. the SERVO CTL-N/W STEERING [6GC] AMM 32-51-51-000-001 AMM 32-51-51-400-001
. the hydraulic pipe
. the steering cylinder AMM 32-51-42-000-001 AMM 32-51-42-400-001.

(2) If there are no leaks:

Subtask 32-51-00-710-053-A

B. Do the functional test of the steering of the nose wheels with the handwheel AMM 32-51-00-720-003.

[Rev.8 from Aug 2018] 2026.04.04 04:31:49 UTC