Reactivation of the Normal Braking - After disconnection of the Green Hydraulic Supply

TASK 32-42-00-440-002-A
Reactivation of the Normal Braking - After disconnection of the Green Hydraulic Supply

1. Reason for the Job
MMEL 32-42-02A
GREEN SYSTEM BRAKE
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 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 32-11-12-400-001-A	Installation of the MLG Hydraulic Dressings
TASK 32-42-00-710-001-A	Operational Check of the Normal Braking System
TASK 32-42-00-870-001-A	Bleeding of the Normal Braking at the Brake Units
Normal Brake Deactivation
Deactivation/Reactivation of the Wheel Brake with Disconnection of the Flexible Hoses if there is a Leak

3. Job Set-up
Subtask 32-42-00-941-057-A

A. Safety Precautions
(1) Put the WARNING NOTICE(S) in position to tell persons not to operate the landing gear control lever and the brake pedals.

Subtask 32-42-00-860-076-A

B. Aircraft Maintenance Configuration
(1) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
(2) Parking brake configuration

CAUTION: MAKE SURE THAT ALL THE PISTONS OF THE BRAKE ARE IN THE RELEASED POSITION.

(a) Make sure that the parking brake control-switch is set to OFF before you do this procedure.

Subtask 32-42-00-865-078-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 32-42-00-440-054-A

A. Reactivation after Isolation of the Green hydraulic supply

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(1) Remove and discard the lockwire from the knurled sleeve (2).
(2) Remove the adhesive tape from the knurled sleeve (2).
(3) Connect the knurled sleeve (2) to the Green half-coupling (1).
(4) Bleed the Green braking system at the related brake (Ref. AMM TASK 32-42-00-870-001).

Subtask 32-42-00-440-059-A

B. Reactivation of the Wheel Brake with Disconnection of the Flexible Hoses from the Normal Braking System if there is a Leak

Deactivation/Reactivation of the Wheel Brake with Disconnection of the Flexible Hoses if there is a Leak

(1) Depressurize the Green hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-001).
(2) Remove the blanking caps from the union (5).
(3) Install the flexible hose (4) on the flexible hose (1) connection and on the union (5) (Ref. AMM TASK 32-11-12-400-001).
(4) Install the flexible hose (1) on the brake hydraulic self-sealing-coupling and on the flexible hose (4) connection (Ref. AMM TASK 32-11-12-400-001).
(5) Bleed the brake unit (Ref. AMM TASK 32-42-00-870-001).

Subtask 32-42-00-710-059-A

C. Test
(1) Do the operational test of the normal braking system (Ref. AMM TASK 32-42-00-710-001).
(2) During this test, make sure that there are no leaks on the hydraulic connector.

5. Close-up
Subtask 32-42-00-860-077-A

A. Put the aircraft back to its initial configuration.
(1) Remove the WARNING NOTICE(S).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Remove the temporary placard which tells that the normal braking is not operational.

[Rev.10 from 2021] 2026.04.01 00:47:27 UTC