Installation of the Manifold Assembly

TASK 32-31-32-400-001-A
Installation of the Manifold Assembly

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

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: OBEY THE HYDRAULIC SAFETY PROCEDURES. WORK ON THE HYDRAULIC SYSTEMS CAN BE DANGEROUS.

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

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 0.99 and 0.81 m.daN (87.61 and 71.68 lbf.in )
No specific	Torque wrench: range to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )
No specific	Torque wrench: range to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.04SAB2)	Varnish Polyurethane-- Marking Structure
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
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 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
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 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 29-23-00-860-002-A	Connection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 32-00-00-860-001-A	Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01	Flight Configuration Precautions without Electrical Power
TASK 32-00-00-860-002-A	Ground Configuration after Flight Configuration with Electrical Power
TASK 32-00-00-860-002-A-01	Ground Configuration after Flight Configuration without Electrical Power
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 32-31-00-720-002-A	Functional Test of the Normal Extension and Retraction of the Landing Gear
TASK 32-31-12-400-001-A	Installation of the Landing-Gear (L/G) Selector Valve
TASK 32-31-34-400-001-A	Installation of the Landing-Gear (L/G) Door Selector Valve
TASK 32-31-47-400-001-A	Installation of the Check Valve
TASK 51-75-13-916-002-A	Repair to a layer of Corrosion Preventive Compound
Manifold Assembly

3. Job Set-up
Subtask 32-31-32-860-051-A

A. Aircraft Maintenance Configuration
(1) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(2) Make sure that the electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002).
(3) Make sure that the flight configuration precautions were obeyed (Ref. AMM TASK 32-00-00-860-001).
(4) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(5) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).

Subtask 32-31-32-865-051-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33

Subtask 32-31-32-941-051-A

C. Safety Precautions
(1) Make sure that the warning notices are in position to tell persons not to pressurize the Green hydraulic system:

On the panel 40VU in the cockpit
On the ground service panel of the Green hydraulic system.

Subtask 32-31-32-560-050-A

D. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(5) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the interface of the manifold assembly (6) and the aircraft structure.

4. Procedure
Subtask 32-31-32-420-050-A

A. Installation of the Manifold Assembly (2828GM)
(1) Put the manifold assembly (6) in position on the aircraft structure and install the washers (5) and the bolts (4).
(2) Install the washer (2), the bonding strap (3) and the bolt (1).
(3) TORQUE the bolts (1) and (4) to between 0.99 and 0.81 m.daN (87.61 and 71.68 lbf.in )

.
(4) Mark the bolts (1) and (4) with a line with Varnish Polyurethane-- Marking Structure (Material No.04SAB2) .
(5) Protect the bonding (Ref. AMM TASK 20-28-00-912-802).
(6) Remove the blanking plugs from the hydraulic pipes (15), (14), (13), (12), (8), (10), (11), (9) and (7).
(7) Connect the pipes (7), (8), (10) and (11) and TORQUE them to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )

.
(8) Connect the pipe (9) and TORQUE to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )

.
(9) Connect the pipes (13) and (14) and TORQUE to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )

.
(10) Connect the pipes (12) and (15) and TORQUE to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )

.
(11) Mark the pipe connectors with a line with Varnish Polyurethane-- Marking Structure (Material No.04SAB2) .
(12) Install the check valve 2537GM (Ref. AMM TASK 32-31-47-400-001).
(13) Install the L/G door selector valve 41GA (Ref. AMM TASK 32-31-34-400-001).
(14) Install the L/G selector valve 40GA (Ref. AMM TASK 32-31-12-400-001).

Subtask 32-31-32-865-052-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33

Subtask 32-31-32-860-052-A

C. Preparation for Test
(1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
(2) If the flight configuration precautions were obeyed, put the aircraft back to the serviceable condition (Ref. AMM TASK 32-00-00-860-002).
(3) Remove the CONTAINER - HYDRAULIC FLUID RESISTANT.
(4) Remove the WARNING NOTICE(S).
(5) Remove the access platform(s).
(6) Make sure that the work area is clean and clear of tools and other items.
(7) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).

Subtask 32-31-32-720-050-A

D. Do the Test
(1) Do the functional test of the normal extension and retraction system (Ref. AMM TASK 32-31-00-720-002).
(2) Open the right MLG door (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that there is no hydraulic fluid leakage from the manifold assembly (6). Leaks are not permitted.

5. Close-up
Subtask 32-31-32-410-051-A

A. Close Access
(1) Apply corrosion protection to the bolt heads, pipe connections and adjacent areas (Ref. AMM TASK 51-75-13-916-002).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 00:44:58 UTC