Removal of the MLG Wheel

TASK 32-41-11-000-006-A
Removal of the MLG 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.

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

ZONE: 731
ZONE: 741
FIN: 2649GM
FIN: 2650GM
FIN: 2651GM
FIN: 2652GM
FIN: 2874GM ** ON A/C NOT FOR ALL
FIN: 2875GM ** ON A/C NOT FOR ALL
FIN: 2876GM ** ON A/C NOT FOR ALL
FIN: 2877GM ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
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	TROLLEY - WHEEL CHANGE, A/C
No specific	AR	WARNING NOTICE(S)
460007230	1	ADAPTOR - TORQUE
5E92-0300	1	PROTECTOR-AXLE,MLG
F46754-1000	1	PROTECTOR
H47682	1	ADAPTOR-MLG
Q47316	1	PROTECTOR-MLG AXLE (MHB)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBB1)	Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.03GCB1)	Synthetic Oil base Grease-Landing Gear Wheel Bearing Lithium Thickened -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
731	L.H MAIN GEAR
741	R.H MAIN GEAR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 07-11-00-581-001-A	Lifting for Aircraft Maintenance Operations
TASK 07-12-00-582-002-A	Jacking of the Main Landing Gear
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
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
TASK 32-48-51-000-005-A	Removal of the Fan Assy
MLG Wheel
Main Gear Wheel ** ON A/C NOT FOR ALL
Main Gear Wheel ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-41-11-941-096-A

A. Safety Precautions
(1) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the landing gear.

Subtask 32-41-11-210-074-A

B. Wheel Assembly Check

MLG Wheel

WARNING: BEFORE YOU LOOSEN THE AXLE NUT, DEFLATE THE TIRES ON THE WHEEL ASSEMBLIES WITH MISSING, BROKEN OR LOOSE TIE-BOLTS. IF YOU DO NOT OBEY THIS INSTRUCTION, SEPARATION OF THE WHEEL ASSEMBLY CAN OCCUR AND CAUSE INJURY TO PERSONNEL.

(1) Before you remove the wheel, do a check of the wheel assembly for missing, broken or loose tie-bolts (52).

Subtask 32-41-11-865-113-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/BRK FAN/WHEELS/3 AND 4	2GS	L35
121VU	HYDRAULIC/BRK FAN/WHEELS/1 AND 2	1GS	L32
121VU	HYDRAULIC/BRK/FAN/CTL	3GS	M32

Subtask 32-41-11-860-115-B

D. Aircraft Maintenance Configuration
(1) Install the safety devices on the landing gears (Ref. AMM TASK 32-00-00-481-001).

WARNING: MAKE SURE THAT THE AIRCRAFT IS STABLE AND DOES NOT MOVE DURING THE JACKING OPERATIONS. IF THERE IS UNWANTED MOVEMENT OF THE AIRCRAFT, THE LANDING-GEAR JACKING DOME CAN COME OFF THE JACK HEAD AND INJURY AND/OR DAMAGE CAN OCCUR.

(2) Do one of the steps that follow:
(a) If you want to remove the MLG wheel from one of the two MLGs (LH or RH), lift the applicable MLG axle (Ref. AMM TASK 07-12-00-582-002).

Make sure that you do not lift the two MLG axles at the same time.
Make sure that you do not remove more than one MLG wheel at the same time.

(b) If you want to remove the MLG wheel(s) from the two MLGs (LH and RH), lift the aircraft on jacks (Ref. AMM TASK 07-11-00-581-001).
(3) Put the PARK BRK control switch to the ON position.
(a) On panel 400VU, make sure that the brake pressure indication on the Yellow brake-pressure triple indicator is correct.
(b) If necessary, pressurize the brake accumulator with the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-24-00-863-001).

WARNING: DECREASE THE TIRE PRESSURE TO APPROXIMATELY 2 BAR (29 PSI) BEFORE YOU REMOVE THE WHEEL. THIS WILL PREVENT A POSSIBLE EXPLOSION.

(4) Decrease the tire pressure as follows:

MLG Wheel

NOTE: If you must remove the wheel for access or inspections, it is not necessary to deflate the tire if:

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 find these two conditions, it is necessary to decrease the tire pressure.

(a) Remove the cap (51) from the inflation valve (50).
(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
Subtask 32-41-11-020-087-A ** ON A/C NOT FOR ALL

A. Preparation of the Wheel before Removal
(1) Loosen the screw (9) and remove the clamp (13).
(2) Remove the hubcap (11).

NOTE: Remove the hubcap along the centerline of the wheel axle to prevent damage to the tachometer drive shaft.

(a) Make sure that the locating pin (12) is installed on the hubcap (11).

Subtask 32-41-11-020-087-G ** ON A/C NOT FOR ALL

A. Preparation of the Wheel before Removal
(1) Remove the brake fan (Ref. AMM TASK 32-48-51-000-005).

NOTE: It is not necessary to remove the motor assembly of the brake fan as described in the AMM task 324851_000_005, to remove the wheel.

Subtask 32-41-11-020-088-A ** ON A/C NOT FOR ALL

B. Removal of the Wheel

WARNING: BE CAREFUL WHEN YOU REMOVE/INSTALL THE WHEEL AND TIRE ASSEMBLY TO PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE WHEEL, AXLE OR OTHER EQUIPMENT. THE ASSEMBLY IS VERY HEAVY (BETWEEN 130 KG AND 200 KG (290 LBS AND 440 LBS)).

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.

CAUTION: MAKE SURE THAT THE AXLE THREAD PROTECTOR IS CORRECTLY INSTALLED ON THE AXLE. YOU CAN CAUSE DAMAGE TO THE AXLE SLEEVE AND THE AXLE WHEN YOU REMOVE/INSTALL A WHEEL IF THE AXLE THREAD PROTECTOR IS:

NOT USED.
NOT FULLY ENGAGED ON THE AXLE.

(1) Remove and discard the cotter pin (4) and the nuts (5).
(2) Remove the washers (6) and the bolts (8).
(3) Remove the axle nut (7) with the H47682 ADAPTOR-MLG.
(4) Install the F46754-1000 PROTECTOR.
(5) Apply a thin layer of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-Landing Gear Wheel Bearing Lithium Thickened - (Material No.03GCB1) on the axle protector.
(6) Put a TROLLEY - WHEEL CHANGE, A/C below the wheel.
(7) Remove the wheel (1).
(8) Record the reason for removal of the wheel (1).
(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.

Subtask 32-41-11-020-088-B ** ON A/C NOT FOR ALL

B. Removal of the Wheel

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.

NOT USED.
NOT FULLY ENGAGED ON THE AXLE.

(1) Remove and discard the cotter pin (4) and the nuts (5).
(2) Remove the washers (6) and the bolts (8).
(3) Remove the axle nut (7) with the 460007230 ADAPTOR - TORQUE.
(4) Install the Q47316 PROTECTOR-MLG AXLE (MHB).
(5) Apply a thin layer of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-Landing Gear Wheel Bearing Lithium Thickened - (Material No.03GCB1) on the axle protector.
(6) Put a TROLLEY - WHEEL CHANGE, A/C below the wheel.
(7) Remove the wheel (1).
(8) 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.

Subtask 32-41-11-020-088-C ** ON A/C NOT FOR ALL

B. Removal of the Wheel

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.

NOT USED.
NOT FULLY ENGAGED ON THE AXLE.

(1) Remove and discard the cotter pins (5) and the nuts (4).
(2) Remove the washers (6) and the bolts (8).
(3) Remove the axle nut (7) with the 460007230 ADAPTOR - TORQUE.
(4) Install the Q47316 PROTECTOR-MLG AXLE (MHB) or 5E92-0300 PROTECTOR-AXLE,MLG or F46754-1000 PROTECTOR.
(5) Apply a thin layer of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-Landing Gear Wheel Bearing Lithium Thickened - (Material No.03GCB1) on the axle protector.
(6) Put a TROLLEY - WHEEL CHANGE, A/C below the wheel (1).
(7) Remove the wheel (1).
(8) 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.

[Rev.10 from 2021] 2026.04.01 00:47:13 UTC