Replacement of the Clogging Indicator

TASK 29-16-11-960-001-A
Replacement of the Clogging Indicator

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.

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 1 L (1/4 USGAL)
No specific	2	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
197CB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
6	PACKINGS	AIPC 29-16-11-01-050
5	PACKING	AIPC 29-16-11-01-060

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
HP Filter

3. Job Set-up
Subtask 29-16-11-010-052-A

A. Open the access panel 197CB.

Subtask 29-16-11-860-052-A

B. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put a WARNING NOTICE(S) 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 Green hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(4) Depressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-001).
(5) Put the ACCESS PLATFORM 3M (10 FT) in position.
(6) Put the CONTAINER 1 L (1/4 USGAL) below the filter to collect the unwanted hydraulic fluid.

4. Procedure
Subtask 29-16-11-020-051-A

A. Removal of the Clogging Indicator
(1) Loosen and remove the clogging indicator (4) from the filter head (1).
(2) Remove and discard the packings (5) and (6) from the clogging indicator (4).

Subtask 29-16-11-560-051-A

B. Preparation for Installation
(1) Lubricate the new AIPC 29-16-11-01-060 PACKING (5) and the new AIPC 29-16-11-01-050 PACKINGS (6) with the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) and install them on the clogging indicator (4).
(2) Lubricate the threads of the clogging indicator (4) with the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .

Subtask 29-16-11-420-051-A

C. Installation of the Clogging Indicator
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Install the clogging indicator (4) in the filter head (1).

Subtask 29-16-11-790-052-A

D. Test of the Filter Assembly
(1) Remove the WARNING NOTICE(S).
(2) Remove the blanking cap from the reservoir fill valve 1698GM.
(3) Connect the flexible hose 1699GM to the fill valve.
(4) Put the end of the flexible hose into a container of the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(5) Make sure that the reservoir filling selector 1134GQ is set to 'N'.
(6) 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.

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

5. Close-up
Subtask 29-16-11-860-053-A

A. Put the aircraft back to the serviceable condition.
(1) Remove the container from below the filter.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the access platform(s).

Subtask 29-16-11-410-052-A

B. Close Access
(1) Close the access panel 197CB.

[Rev.10 from 2021] 2026.04.01 00:25:19 UTC