DOC AIRBUS | AMM A320FInstallation of the Forestay Bearing
TASK 32-21-24-400-002-A
Installation of the Forestay Bearing
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 32-21-24-010-054-A
Subtask 32-21-24-110-051-A ** ON A/C NOT FOR ALL
Subtask 32-21-24-410-052-A
[Rev.10 from 2021]
2026.04.01 00:42:28 UTC
Installation of the Forestay Bearing
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | 1 | BLOWING EQUIPMENT - DRY AIR |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03GBB1) | Synthetic Oil base Grease-General Purpose Clay Thickened - |
| (Material No.03GBC1) | Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - |
| (Material No.03GBD1) | Synthetic Oil base Grease-General Purpose Lithium Thickened - |
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| (Material No.06LCG9) | Non Hardening Jointing Putty-Medium Temp. Area - - |
| (Material No.08BBB1) | Non Aqueous Cleaner-- Petroleum Based - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 812, 822 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 2 | COTTER PINS | AIPC 32-21-01-01-010 |
| 7 | COTTER PINS | AIPC 32-21-01-01-010 |
| 4 | O-RINGS | AIPC 32-21-01-01-060 |
| 6 | O-RINGS | AIPC 32-21-01-01-060 |
| 3 | O-RING | AIPC 32-21-01-01-070 |
| 5 | O-RING | AIPC 32-21-01-01-070 |
| 2 | COTTER PINS | AIPC 32-21-81-01-060 |
| 6 | O-RINGS | AIPC 32-21-81-01-100 |
| 5 | O-RING | AIPC 32-21-81-01-150 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-22-32-640-002-A | Lubrication of Nose Landing Gear and Doors |
| TASK 32-21-16-000-002-A | Removal of the NLG Drag-Strut Assy |
| TASK 32-21-16-000-002-A-02 | Removal of the Nose Landing Gear (NLG) Drag-Strut Assy (EV NLG) |
| TASK 32-21-16-400-002-A | Installation of the NLG Drag-Strut Assy |
| TASK 32-21-16-400-002-A-02 | Installation of the Nose Landing Gear (NLG) Drag-Strut Assy (EV NLG) |
| TASK 32-31-00-720-003-A | Functional Test of the Normal Extension and Retraction of the Nose Landing Gear |
| TASK 12-22-00-00 | LUBRICATION - DESCRIPTION AND OPERATION |
NLG Drag Strut Assy - Swivel BearingsSubtask 32-21-24-010-054-A
A. Get Access
(1) Make sure that the drag strut assembly of the nose landing gear is removed (Ref. AMM TASK 32-21-16-000-002).
(2) Make sure that the access doors 812 and 822 are open.
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position in zone 123.
4. Procedure(1) Make sure that the drag strut assembly of the nose landing gear is removed (Ref. AMM TASK 32-21-16-000-002).
(2) Make sure that the access doors 812 and 822 are open.
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position in zone 123.
Subtask 32-21-24-110-051-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Clean the nuts, the bolts, the washers and the cover (5) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) . Dry them with dry, filtered compressed air.
(2) Apply a thin layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the swivel bearings (2).
Subtask 32-21-24-420-054-A ** ON A/C NOT FOR ALL (1) Clean the nuts, the bolts, the washers and the cover (5) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) . Dry them with dry, filtered compressed air.
(2) Apply a thin layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the swivel bearings (2).
NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).
B. Installation of the Forestay Bearing
(1) Apply a thin layer of Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) or Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) on the new AIPC 32-21-01-01-070 O-RING (3) and the new AIPC 32-21-01-01-060 O-RINGS (4).
(2) Install the O-rings (3) and (4) on the cover (5).
(3) Install the swivel bearings (2) in their housings.
(4) Apply a thin layer of Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the bolts (1).
(5) Install the bolts (1), the cover (5), the washers (6) and the nuts (8).
(6) Tighten the nuts (8).
(8) Install the drag strut assembly of the nose landing gear (Ref. AMM TASK 32-21-16-400-002).
(9) Lubricate the swivel bearings of the drag strut assembly (Ref. AMM TASK 12-22-32-640-002).
Subtask 32-21-24-110-051-B ** ON A/C NOT FOR ALL (1) Apply a thin layer of Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) or Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) on the new AIPC 32-21-01-01-070 O-RING (3) and the new AIPC 32-21-01-01-060 O-RINGS (4).
(2) Install the O-rings (3) and (4) on the cover (5).
(3) Install the swivel bearings (2) in their housings.
(4) Apply a thin layer of Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the bolts (1).
(5) Install the bolts (1), the cover (5), the washers (6) and the nuts (8).
(6) Tighten the nuts (8).
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.
(7) Safety the nuts (8) with the new AIPC 32-21-01-01-010 COTTER PINS (7).(8) Install the drag strut assembly of the nose landing gear (Ref. AMM TASK 32-21-16-400-002).
(9) Lubricate the swivel bearings of the drag strut assembly (Ref. AMM TASK 12-22-32-640-002).
C. Preparation for Installation
(2) Apply a thin layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the swivel bearing (4).
Subtask 32-21-24-420-054-B ** ON A/C NOT FOR ALL WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(1) Clean the nuts (1), the bolts (8), the washers (3) and the cover (7) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) . Dry them with BLOWING EQUIPMENT - DRY AIR. (2) Apply a thin layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the swivel bearing (4).
NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).
D. Installation of the Forestay Bearing
(1) Apply a thin layer of Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) or Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) on the new AIPC 32-21-01-01-070 O-RING (5) or AIPC 32-21-81-01-150 O-RING (5) and the new AIPC 32-21-01-01-060 O-RINGS (6) or AIPC 32-21-81-01-100 O-RINGS (6).
(2) Install the O-rings (5) and (6) on the protective cover (7).
(3) Install the swivel bearing (4) in its housing.
(4) Apply a thin layer of Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the bolts (8).
(5) Install the protective cover (7), the bolts (8), the washers (3) and the nuts (1).
(6) Tighten the nuts (1).
(8) Install the drag strut assembly of the nose landing gear (Ref. AMM TASK 32-21-16-400-002).
(9) Lubricate the swivel bearing (4) of the drag strut assembly (Ref. AMM TASK 12-22-32-640-002).
Subtask 32-21-24-720-051-A (1) Apply a thin layer of Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) or Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) on the new AIPC 32-21-01-01-070 O-RING (5) or AIPC 32-21-81-01-150 O-RING (5) and the new AIPC 32-21-01-01-060 O-RINGS (6) or AIPC 32-21-81-01-100 O-RINGS (6).
(2) Install the O-rings (5) and (6) on the protective cover (7).
(3) Install the swivel bearing (4) in its housing.
(4) Apply a thin layer of Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the bolts (8).
(5) Install the protective cover (7), the bolts (8), the washers (3) and the nuts (1).
(6) Tighten the nuts (1).
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.
(7) Safety the nuts (1) with the new AIPC 32-21-01-01-010 COTTER PINS (2) or AIPC 32-21-81-01-060 COTTER PINS (2).(8) Install the drag strut assembly of the nose landing gear (Ref. AMM TASK 32-21-16-400-002).
(9) Lubricate the swivel bearing (4) of the drag strut assembly (Ref. AMM TASK 12-22-32-640-002).
E. Functional Test
(1) Do a functional test of the retraction of the nose landing gear (Ref. AMM TASK 32-31-00-720-003).
5. Close-up(1) Do a functional test of the retraction of the nose landing gear (Ref. AMM TASK 32-31-00-720-003).
Subtask 32-21-24-410-052-A