Installation of the Filter HP Assembly

TASK 29-16-11-400-801-A
Installation of the Filter HP Assembly

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: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

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

ZONE: 190
FIN: 1132GM

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 2M (6 FT) - ADJUSTABLE
No specific	1	CONTAINER 3 L(3/4 USGAL)
No specific	2	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )
No specific	Torque wrench: range to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )
No specific	Torque wrench: range to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )
No specific	Torque wrench: range to between 2.3 and 2.0 m.daN (16.96 and 14.75 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.04JMD9)	Top Coat Polyurethane-- Decorative Furnishing
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
190	BELLY FAIR, AIR CONDITIONING & HYD COMPT
197BB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
7	PACKING	AIPC 29-16-04-03-140
6	PACKING	AIPC 29-16-04-03-160

E. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
HP Filter

3. Job Set-up
Subtask 29-16-11-860-057-A

A. Aircraft Maintenance Configuration
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Green hydraulic system:

In the cockpit on the hydraulic panel 40VU of the overhead panel,
On the ground service panel of the Green hydraulic system.

(3) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the reservoir of the Green hydraulic system is depressurized
(Ref. AMM TASK 29-14-00-614-001).
(5) Make sure that the CONTAINER 3 L(3/4 USGAL) is in position below the filter to collect the unwanted hydraulic fluid.
(6) Make sure that the access panel 197BB is removed.
(7) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below the ground service panel of the Green hydraulic system.

Subtask 29-16-11-560-053-A

B. Preparation for Installation
(1) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new AIPC 29-16-04-03-160 PACKING (6) and the new AIPC 29-16-04-03-140 PACKING (7).
(2) Apply the Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the threads of the bolts (8) and to the nuts (9).

4. Procedure
Subtask 29-16-11-420-053-A

A. Installation of the HP Filter

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

CAUTION: YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.

(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the hydraulic line end-fittings are serviceable.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Put the HP filter (1) in position in the service panel.
(5) Install the bolts (8) and the nuts (9).
(6) Install the new packings (6) and (7) and the unions (3) and (5).
(7) TORQUE the union nuts (3) and (5) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )

.
(8) Remove the blanking plugs from the disconnected line end-fittings.
(9) Connect the union nut (2) to the union (3).
(10) TORQUE the union nut (2) to between 2.3 and 2.0 m.daN (16.96 and 14.75 lbf.ft )

.
(11) Connect the union nut (4) to the union (5).
(a) For the union (5) with P/N MS21902D4:
1 TORQUE the union nut (4) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )

.
(b) For the union (5) with P/N MS21902J4:
1 TORQUE the union nut (4) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )

.
(12) Make a mark on each pipe end-fitting with the Top Coat Polyurethane-- Decorative Furnishing (Material No.04JMD9) .

Subtask 29-16-11-790-054-A

B. Test of the Filter Assembly
(1) Remove the blanking cap from the reservoir fill valve 1698GM.
(2) Connect the flexible hose 1699GM to the fill valve.
(3) Put the end of the flexible hose into a container of the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(4) Make sure that the reservoir filling selector 1134GQ is set to 'N'.
(5) Operate the hand pump through three or four cycles to pressurize the filter.

NOTE: A Pressure relief valve in the filling selector valve will operate if too much pressure is put into the system. If this occurs, a small amount of fluid will go into the reservoir of the Yellow system.

(6) Make sure that no fluid comes out of the filter.
(7) Make sure that the clogging indicator stays in.
(8) Momentarily set the reservoir filling selector to one of the reservoir positions (G, Y or B) to release the hydraulic pressure.
(9) Set the reservoir filling selector to the position 'N'.
(10) Disconnect the flexible hose and put it into its position in the ground service panel of the Green system.
(11) Install the blanking cap on the reservoir fill valve.

5. Close-up
Subtask 29-16-11-860-058-A

A. Put the aircraft back to the serviceable condition.
(1) Remove the container from below the filter.
(2) Pressurize the reservoirs of the hydraulic systems.
(Ref. AMM TASK 29-14-00-614-002).
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 29-16-11-410-054-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 197BB.

[Rev.10 from 2021] 2026.04.01 00:25:21 UTC