Inspection/Check of the Brake with the Wheel Installed

TASK 32-42-27-210-001-A
Inspection/Check of the Brake with the Wheel Installed

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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.

FIN: 2641GM
FIN: 2642GM
FIN: 2643GM
FIN: 2644GM

1. Reason for the Job
To make sure that the brake unit is in the correct condition.

To do an inspection of the brake unit to make sure that the disc pads are not worn.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 32-42-27-000-001-A	Removal of the Brake
TASK 32-42-27-210-003-A	Functional Check of Brake Heat Pack for Wear by Use of the Wear Indicator (Parking Brake Applied)
TASK 32-42-27-400-001-A	Installation of the Brake

3. Job Set-up
Subtask 32-42-27-860-053-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(3) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-24-00-863-001).

Subtask 32-42-27-941-054-A

B. Safety Precautions
(1) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the landing gear.
(2) Make sure that the wheel chocks are in position.
(3) Set the parking brake to the OFF position
(4) On the panel 110VU, make sure that the PARK BRK control switch 73GG is in the OFF position.

Subtask 32-42-27-865-056-A

C. Make sure that this(these) circuit breaker(s) is(are) closed:

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

4. Procedure
Subtask 32-42-27-210-052-A

A. Inspection of the Brake
(1) Make sure that there are no leaks on the Normal braking system.
(a) On the panel 402VU, set the A/SKID & NOSE WHEEL switch to ON.
(b) Push the brake pedals more than once.
(c) Make sure that there are no leaks on the piston housing, the pistons and the hydraulic lines.
(2) Make sure that there are no leaks in the alternate braking system.
(a) On the panel 402VU, set the A/SKID & NOSE WHEEL switch to OFF.
(b) Push the brake pedals more than once.
(c) Make sure that there are no leaks on the piston housing, the pistons and the hydraulic lines.
(3) Make sure that the bleed plugs, the temperature sensor and the self-sealing couplings are in the correct position.
(4) With the parking brake ON, make sure that the wear indicators are in the limits (Ref. AMM TASK 32-42-27-210-003).
(5) With the parking brake not applied, shake the piston housing manually to make sure that the brake piston-housing bolts are correctly tightened.
(a) If the piston housing is loose, replace the brake (Ref. AMM TASK 32-42-27-000-001) (Ref. AMM TASK 32-42-27-400-001).

5. Close-up
Subtask 32-42-27-860-054-A

A. Put the aircraft back to its initial configuration.
(1) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(2) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 32-42-27-941-055-A

B. Removal of Equipment
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) Remove the WARNING NOTICE(S).
(3) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 03:56:21 UTC