Removal of the NLG Vent Valve

TASK 32-33-14-000-001-A
Removal of the NLG Vent Valve

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: 124
FIN: 2532GM

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
124	NOSE GEAR WELL

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
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
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A	Installation of the Safety Devices on the Landing Gear Doors
TASK 32-22-00-010-001-A	Nose Gear Doors - Ground Doors Opening
NLG Vent Valve - Assembly

3. Job Set-up
Subtask 32-33-14-860-050-A

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(3) Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001).

Subtask 32-33-14-010-050-A

B. Get Access
(1) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the vent valve (2532GM) in zone 123.

Subtask 32-33-14-941-051-A

C. 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) 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).

(3) Make sure that the safety devices are installed:

on the Nose Landing Gear (Ref. AMM TASK 32-00-00-481-001)
on the NLG doors (Ref. AMM TASK 32-00-00-481-002).

(4) Put the CONTAINER 5 L (1.32 USGAL) below the vent valve (2532GM), to collect the hydraulic fluid leakage.

4. Procedure
Subtask 32-33-14-020-050-A

A. Removal of the vent valve (20)
(1) Disconnect the hydraulic lines (13), (14) and (23) and put PLUG - BLANKING on the disconnected line ends.
(2) Remove the reducers (12), (15) and (22). Remove and discard the packings (11), (16) and (21).
(3) Remove the cotter pin (9) and discard it. Remove the nut (8) and the washer (7).
(4) Remove the bolt (5) and disconnect the rod (4).
(5) Remove and discard the cotter pin (27). Remove the nut (26), the washer (25) and the bolt (10).
(6) Remove the lever (6).
(7) Remove the cotter pins (17) and discard them. Remove the nuts (18) and the washers (19).
(8) Remove the bolts (24) which hold the vent valve (20) in position.
(9) Remove the vent valve (20).

[Rev.10 from 2021] 2026.04.01 00:46:32 UTC