Installation of the Swivel Bearing

TASK 32-21-24-400-001-A
Installation of the Swivel Bearing

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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	Torque wrench: range to between 1.35 and 1.2 m.daN (119.47 and 106.19 lbf.in )

B. Consumable Materials

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.08BBB1)	Non Aqueous Cleaner-- Petroleum Based -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
812, 822, 824

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
7	COTTER PINS	AIPC 32-21-01-01-010
4	O-RINGS	AIPC 32-21-01-01-060
3	O-RING	AIPC 32-21-01-01-075
7	COTTER PINS	AIPC 32-21-81-01-060
4	O-RINGS	AIPC 32-21-81-01-100
3	O-RING	AIPC 32-21-81-01-120

E. Referenced Information

REFERENCE	DESIGNATION
TASK 21-26-42-000-001-A	Removal of the Avionics Equipment Ventilation-Duct
TASK 21-26-42-400-001-A	Installation of the Avionics Equipment Ventilation-Duct
TASK 32-21-11-000-003-A	Removal of the NLG Leg Assembly
TASK 32-21-11-400-003-A	Installation of the NLG Leg Assembly
TASK 32-31-00-720-003-A	Functional Test of the Normal Extension and Retraction of the Nose Landing Gear
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
TASK 12-22-00-00	LUBRICATION - DESCRIPTION AND OPERATION
Nose Gear Swivel Bearing

3. Job Set-up
Subtask 32-21-24-010-051-A

A. Get Access
(1) Make sure that the NLG leg assembly is removed (Ref. AMM TASK 32-21-11-000-003).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position in zone 123.
(3) Make sure that access doors 812, 822 and 824 are open to get access to the hinge points of the NLG (Ref. AMM TASK 52-41-00-010-002).
(4) If necessary, make sure that the avionics-equipment ventilation-duct is removed (Ref. AMM TASK 21-26-42-000-001).

4. Procedure
Subtask 32-21-24-110-050-A

A. Preparation for Installation
(1) Clean all the components and the swivel bearing with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and dry them with filtered compressed air.
(2) Apply a light coat of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) on the swivel bearing to make its installation easier.

NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).

Subtask 32-21-24-420-050-A

B. Installation of the Swivel 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 32-21-01-01-075 O-RING (3) or AIPC 32-21-81-01-120 O-RING (3) and the new AIPC 32-21-01-01-060 O-RINGS (4) or AIPC 32-21-81-01-100 O-RINGS (4).
(2) Install the O-rings (3) and (4) on the protective cover (5).
(3) Install the swivel bearing (2).
(4) Install the protective cover (5), the bolts (1), the washers (6) and the nuts (8).
(5) TORQUE the nuts (8) to between 1.35 and 1.2 m.daN (119.47 and 106.19 lbf.in )

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.

(6) Safety the nuts (8) with the new AIPC 32-21-01-01-010 COTTER PINS (7) or AIPC 32-21-81-01-060 COTTER PINS (7).
(7) Make sure that the swivel bearing (2) has no friction points and can move freely in its housing.
(8) Install the NLG leg assembly (Ref. AMM TASK 32-21-11-400-003).

Subtask 32-21-24-720-050-A

C. Functional Test
(1) Do the functional test of the NLG normal extension and retraction (Ref. AMM TASK 32-31-00-720-003).

5. Close-up
Subtask 32-21-24-410-050-A

A. Close Access
(1) If the avionics-equipment ventilation-duct was removed, install it (Ref. AMM TASK 21-26-42-400-001).
(2) Close access doors 812, 822 and 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).
(4) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 00:42:26 UTC