DOC AIRBUS | AMM A320FRemoval of the NLG Wheel
TASK 32-41-12-000-001-A
Removal of the NLG Wheel
If you remove the NLG wheel when you do the TSM TASK 32-20-00-810-802-A "Vibration Felt on the NLG during Takeoff and Lift Off Phases", we recommend that you replace the two NLG wheels.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 32-41-12-865-050-A
Subtask 32-41-12-010-051-A
[Rev.10 from 2021]
2026.04.01 00:47:15 UTC
Removal of the NLG Wheel
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:
IT IS RECOMMENDED TO ONLY REMOVE ONE WHEEL AND TIRE ASSEMBLY FROM THE LANDING GEAR AT THE SAME TIME. IF YOU REMOVE THE TWO WHEEL AND TIRE ASSEMBLIES AT THE SAME TIME, DAMAGE TO THE AIRCRAFT AND INJURY TO PERSONS CAN OCCUR.
1. Reason for the JobIf you remove the NLG wheel when you do the TSM TASK 32-20-00-810-802-A "Vibration Felt on the NLG during Takeoff and Lift Off Phases", we recommend that you replace the two NLG wheels.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ADAPTER - TIRE INFLATION/DEFLATION |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 1324A | 1 | HANDLING TOOL |
| J47548 | 1 | PROTECTOR NLG |
| J47549 | 1 | ADAPTOR NLG |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 711 | NOSE GEAR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 07-12-00-582-001-A | Jacking of the Nose Landing Gear |
| TASK 32-00-00-481-001-A | Installation of the Safety Devices on the Landing Gears |
| TASK 32-41-00-210-003-A | Functional Check of Tire Pressures |
NLG Wheel ValveSubtask 32-41-12-865-050-A
A. Open, safety and tag this(these) circuit breaker(s):
Subtask 32-41-12-941-050-A | 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 |
B. Safety Precautions
(1) Put the wheel chocks in position at the main landing gear.
(2) In the cockpit, put a WARNING NOTICE(S) on the panel 400VU to tell persons not to operate the landing gear.
Subtask 32-41-12-860-050-A (1) Put the wheel chocks in position at the main landing gear.
(2) In the cockpit, put a WARNING NOTICE(S) on the panel 400VU to tell persons not to operate the landing gear.
C. Aircraft Maintenance Configuration
(1) Install the safety devices on the landing gears (Ref. AMM TASK 32-00-00-481-001).
(2) Jacking of the Nose Landing Gear (NLG) to replace the wheel.
(a) Lift the nose gear (Ref. AMM TASK 07-12-00-582-001).
(b) Attach the ADAPTER - TIRE INFLATION/DEFLATION to the inflation valve (50).
(c) Decrease the tire pressure until the pressure gage of the ADAPTER - TIRE INFLATION/DEFLATION shows between 1.79 bar (26 psi) and 2.20 bar (32 psi).
(d) Remove the ADAPTER - TIRE INFLATION/DEFLATION.
(e) Put the cap (51) on the inflation valve (50) and tighten it.
4. Procedure(1) Install the safety devices on the landing gears (Ref. AMM TASK 32-00-00-481-001).
(2) Jacking of the Nose Landing Gear (NLG) to replace the wheel.
(a) Lift the nose gear (Ref. AMM TASK 07-12-00-582-001).
WARNING:
DECREASE THE TIRE PRESSURE TO APPROXIMATELY 2 BAR (29 PSI) BEFORE YOU REMOVE THE WHEEL. THIS WILL PREVENT A POSSIBLE EXPLOSION.
(3) Decrease the tire pressure as follows: NOTE: If you must remove the wheel for access or inspections, it is not necessary to deflate the tire if:
(a) Remove the cap (51) from the inflation valve (50). - The tire is in the correct condition.
- The tire pressure is in the normal operating range (Ref. AMM TASK 32-41-00-210-003).
If you do not have these two conditions, it is necessary to decrease the tire pressure.
(b) Attach the ADAPTER - TIRE INFLATION/DEFLATION to the inflation valve (50).
(c) Decrease the tire pressure until the pressure gage of the ADAPTER - TIRE INFLATION/DEFLATION shows between 1.79 bar (26 psi) and 2.20 bar (32 psi).
(d) Remove the ADAPTER - TIRE INFLATION/DEFLATION.
(e) Put the cap (51) on the inflation valve (50) and tighten it.
Subtask 32-41-12-010-051-A
A. Get access
(1) Remove the screws (7) and the washers (8).
(2) Remove the hubcap (6).
Subtask 32-41-12-020-050-A (1) Remove the screws (7) and the washers (8).
(2) Remove the hubcap (6).
B. Removal of the NLG wheel
(2) Remove the washers (2) and the bolts (5).
(3) Remove and retain the casing (9).
(4) Remove the axle nut (10) with the J47549 ADAPTOR NLG.
(5) Install the J47548 PROTECTOR NLG.
(6) Remove the wheel with the 1324A HANDLING TOOL.
(a) Prepare a tag and attach it to the wheel and tire assembly.
(b) Write on the tag the reason for removal of the tire.
WARNING:
USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
(1) Remove and discard the two cotter pins (4) and the two nuts (3). (2) Remove the washers (2) and the bolts (5).
(3) Remove and retain the casing (9).
(4) Remove the axle nut (10) with the J47549 ADAPTOR NLG.
(5) Install the J47548 PROTECTOR NLG.
(6) Remove the wheel with the 1324A HANDLING TOOL.
NOTE: The 1324A HANDLING TOOL is optional, but Airbus recommends to use this tool during removal of the wheel.
(7) Record the reason for removal of the wheel. (a) Prepare a tag and attach it to the wheel and tire assembly.
(b) Write on the tag the reason for removal of the tire.