Removal of the Brake

TASK 32-42-27-000-001-A
Removal of the Brake

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: LET THE BRAKES AND THE WHEELS BECOME COOL BEFORE YOU GO NEAR THE LANDING GEAR. DO NOT APPLY A LIQUID OR GAS DIRECTLY ON A HOT WHEEL OR BRAKE UNIT. THIS CAN CAUSE A TIRE EXPLOSION AND/OR A WHEEL RIM BURST.

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

ZONE: 731
ZONE: 741
FIN: 2641GM
FIN: 2642GM
FIN: 2643GM
FIN: 2644GM

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	CAP - BLANKING
No specific	1	CRANE 100KG (220 LB)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	SOCKET - STANDARD, LARGE
No specific	AR	WARNING NOTICE(S)
1324A	1	HANDLING TOOL
98D32403005001	1	ADAPTOR - BRAKE UNIT NUT
98D32403007200	1	PROTECTOR, WHEEL AXLE
F27220000	1	HOISTING DEVICE
J47779	1	PROTECTIVE CONE
M46292	1	ADAPTOR
Q47323-1	1	GUIDE CONE

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 -
(Material No.03HBD9)	Synthetic Ester base Grease-General Purpose Low Temp -

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 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-41-11-000-006-A	Removal of the MLG Wheel
TASK 32-47-15-000-001-A	Removal of the Brake Temperature Sensor
TASK 12-22-00-00	LUBRICATION - DESCRIPTION AND OPERATION
Brake Unit ** ON A/C NOT FOR ALL
Brake Unit ** ON A/C NOT FOR ALL
Brake Unit ** ON A/C NOT FOR ALL
Brake Unit ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-42-27-941-060-A

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Put the WARNING NOTICE(S) in position:

on the ground service panel to tell persons not to pressurize the Green and Yellow hydraulic systems,
on the panel 40VU, to tell persons not to pressurize the Green and Yellow hydraulic systems.

Subtask 32-42-27-860-059-A

B. Aircraft Maintenance Configuration
(1) Put the wheel chocks in position for the wheels that are on the ground.
(2) Make sure that the Green and Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the safety devices are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(4) Remove the applicable wheel (Ref. AMM TASK 32-41-11-000-006).
(5) On the panel 110VU, set the PARK BRK control switch to OFF.

Subtask 32-42-27-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	HYDRAULIC/BRK/TEMP/DET/UNIT	1GW	M37
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
121VU	HYDRAULIC/PARK BRK/CTL/STBY	71GG	N37
121VU	HYDRAULIC/PARK BRK/CTL/NORM	70GG	N36

4. Procedure
Subtask 32-42-27-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Brake

WARNING: THE BRAKE UNIT WEIGHS APPROXIMATELY 67kg (147lb). BE CAREFUL WHEN YOU MOVE IT TO PREVENT INJURY TO PERSONS OR DAMAGE TO THE WHEEL OR AXLE.

(1) 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) or Synthetic Oil base Grease-Landing Gear Wheel Bearing Lithium Thickened - (Material No.03GCB1) on the outer circumference of the protective tool.

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

(2) Install the J47779 PROTECTIVE CONE on the wheel axle (6).
(3) Disconnect the electrical connector (9).
(4) Put a CAP - BLANKING on the electrical connector (9).
(5) Disconnect the hydraulic quick-release couplings.

CAUTION: TO REMOVE THE HYDRAULIC QUICK-RELEASE COUPLING FROM THE BRAKE UNIT, TURN THE LOCKING COLLAR BEFORE YOU PULL IT AWAY. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.

(a) Disconnect the hydraulic quick-release couplings (2) and (14) from the brake-unit self-sealing couplings (3) and (13).
Do not remove the hydraulic hoses from their hydraulic quick-release couplings (2) and (14).
(6) Install the PLUG - BLANKING on the hydraulic quick-release couplings (2) and (14).
(7) Remove the nuts (8) with the M46292 ADAPTOR or with the 98D32403005001 ADAPTOR - BRAKE UNIT NUT or with a SOCKET - STANDARD, LARGE and remove the washers (7).
(8) Remove the brake unit (1) with the CRANE 100KG (220 LB) and the F27220000 HOISTING DEVICE or 1324A HANDLING TOOL.
(9) If necessary, remove the brake temperature sensor (Ref. AMM TASK 32-47-15-000-001) and retain it for installation on the new brake unit.

NOTE: If you send the brake unit (1) to the workshop, it is necessary to send the nuts (8), bolts (12) and washers (7) with it.

Subtask 32-42-27-020-050-G ** ON A/C NOT FOR ALL

A. Removal of the Brake

WARNING: THE BRAKE UNIT WEIGHS APPROXIMATELY 96kg (212lb). BE CAREFUL WHEN YOU MOVE IT TO PREVENT INJURY TO PERSONS OR DAMAGE TO THE WHEEL OR AXLE.

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

(2) Install the Q47323-1 GUIDE CONE or the 98D32403007200 PROTECTOR, WHEEL AXLE on the wheel axle (6).
(3) Disconnect the electrical connector (9).
(4) Put a CAP - BLANKING on the electrical connector (9).
(5) Disconnect the hydraulic quick-release couplings.

(a) Disconnect the hydraulic quick-release couplings (2) and (14) from the brake-unit self-sealing couplings (3) and (13).
Do not remove the hydraulic hoses from their hydraulic quick-release couplings (2) and (14).
(6) Install the PLUG - BLANKING on the hydraulic quick-release couplings (2) and (14).
(7) Remove the nuts (8) with the M46292 ADAPTOR or with 98D32403005001 ADAPTOR - BRAKE UNIT NUT or with a SOCKET - STANDARD, LARGE and remove the washers (7).
(8) Remove the brake unit (1) with the CRANE 100KG (220 LB) and the 1324A HANDLING TOOL.
(9) If necessary, remove the brake temperature sensor (Ref. AMM TASK 32-47-15-000-001) and retain it for installation on the new brake unit.

NOTE: If you send the brake unit (1) to the workshop, it is necessary to send the nuts (8), bolts (12) and washers (7) with it.

[Rev.10 from 2021] 2026.04.01 00:47:58 UTC