Removal of the Normal-Brake Servovalve Manifold Filter

TASK 32-42-16-000-002-A
Removal of the Normal-Brake Servovalve Manifold Filter

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.

FIN: 2612GM
FIN: 2613GM

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	ACCESS PLATFORM 3M (10 FT)
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)
89901	1	SPATULA

B. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
Normal-Brake Servovalve Manifold - Filter Installation Detail
Normal-Brake Servovalve Manifold - Filter Installation Detail

3. Job Set-up
Subtask 32-42-16-941-052-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:

make sure that the landing-gear control-lever 6GA is in the DOWN position
put a WARNING NOTICE(S) in position in the cockpit to tell persons not to operate the landing gear.

(4) Put a WARNING NOTICE(S) on the ground service connection to tell persons not to pressurize the Green hydraulic system.

Subtask 32-42-16-860-053-A

B. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-00-00-864-001).
(2) Depressurize the Green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).

Subtask 32-42-16-865-053-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** 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
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33

Subtask 32-42-16-010-052-A

D. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT) below the applicable normal-brake servovalve manifold assembly:
(a) FOR [2613GM] (MANIFOLD-NORM BRK SERVOVALVE,L)
below zone 731
(b) FOR [2612GM] (MANIFOLD-NORM BRK SERVOVALVE,R)
below zone 741.
(2) Put a CONTAINER 5 L (1.32 USGAL) below the applicable normal-brake servovalve manifold assembly.
(3) Disconnect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-001).

4. Procedure
Subtask 32-42-16-020-051-B

A. Removal of the Normal-Brake Servovalve Manifold-Filter

Normal-Brake Servovalve Manifold - Filter Installation Detail

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

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.

CAUTION: MAKE SURE THAT THE FLUID DOES NOT STAY ON THE AIRCRAFT STRUCTURE. IF THE FLUID GETS ON THE AIRCRAFT STRUCTURE, WASH IT OFF IMMEDIATELY WITH SOAP AND WATER.

(1) Cut, remove and discard the lockwire from the plug (1).
(2) Remove the plug (1) from the filter (4).
(3) Use the 89901 SPATULA to remove the packing (3) and the retainer (2) from the plug (1).
(4) Discard the retainer (2) and the packing (3).
(5) Remove the filter (4) from the manifold (6).
(6) Use the 89901 SPATULA to remove the packing (5) from the filter (4).
(7) Discard the filter (4) and the packing (5).

[Rev.10 from 2021] 2026.04.01 00:47:51 UTC