DOC AIRBUS | AMM A320FServicing of the HP-Filter
TASK 29-16-11-610-001-A
Servicing of the HP-Filter
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 29-16-11-010-051-A Subtask 29-16-11-860-050-A
Subtask 29-16-11-020-050-A
Subtask 29-16-11-860-051-A
[Rev.10 from 2021]
2026.04.01 07:54:37 UTC
Servicing of the HP-Filter
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.
FIN: 1132GM
1. Reason for the Job- Replace the filter element.
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | CONTAINER 2 L (0.53 USGAL) |
| No specific | 2 | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| No specific | lockwire 0.8 mm (0.032 in.) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 197CB |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 2 | FILTER ELEMENT | AIPC 29-16-11-01-020 |
| 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 FilterSubtask 29-16-11-010-051-A Subtask 29-16-11-860-050-A
B. Aircraft Maintenance Configuration
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system:
(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 CONTAINER 2 L (0.53 USGAL) under the filter to collect any hydraulic fluid.
4. Procedure(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put the 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.
(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 CONTAINER 2 L (0.53 USGAL) under the filter to collect any hydraulic fluid.
Subtask 29-16-11-020-050-A
A. Removal of the Filter Element
(1) Cut and remove the lockwire between the filter bowl (3) and the filter head (1).
(2) Remove the filter bowl (3) together with the filter element (2).
(3) Remove the filter element (2) together with its O-ring from the filter bowl (3).
(4) Discard the filter element (2) and the O-ring.
Subtask 29-16-11-560-050-A (1) Cut and remove the lockwire between the filter bowl (3) and the filter head (1).
(2) Remove the filter bowl (3) together with the filter element (2).
(3) Remove the filter element (2) together with its O-ring from the filter bowl (3).
(4) Discard the filter element (2) and the O-ring.
B. Preparation for Installation
(1) Lubricate the O-ring (7) of the new AIPC 29-16-11-01-020 FILTER ELEMENT (2) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(3) If the red clogging indicator (4) is out, push it in to set it again.
Subtask 29-16-11-420-050-A (1) Lubricate the O-ring (7) of the new AIPC 29-16-11-01-020 FILTER ELEMENT (2) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
NOTE: The O-ring (7) is part of the filter element (2).
(2) Lubricate the threads of the filter bowl (3) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) . (3) If the red clogging indicator (4) is out, push it in to set it again.
C. Installation of the Filter Element
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Do a check of the filter element (2) and make sure that it is clean and not damaged.
(4) Install the filter element (2), together with its O-ring, in the filter bowl (3).
(5) Engage the filter bowl (3) in the filter head (1) and tighten it.
Subtask 29-16-11-790-051-A (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Do a check of the filter element (2) and make sure that it is clean and not damaged.
(4) Install the filter element (2), together with its O-ring, in the filter bowl (3).
(5) Engage the filter bowl (3) in the filter head (1) and tighten it.
NOTE: Tighten the filter bowl with your hands only.
D. 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 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.
(7) Make sure that the clogging indicator stays in.
(8) Momentarily set the reservoir filling selector to any one of the reservoir positions (G, Y or B) to release the hydraulic pressure.
(9) Set the reservoir filling selector to 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(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 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 happens, 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 any one of the reservoir positions (G, Y or B) to release the hydraulic pressure.
(9) Set the reservoir filling selector to 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.
Subtask 29-16-11-860-051-A
A. Put the aircraft back to the serviceable condition.
(1) Safety the filter bowl (3) to the filter head (1) with lockwire 0.8 mm (0.032 in.).
(2) Remove the container from below the filter.
(3) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(4) Remove the warning notices from the cockpit and from the ground service panel.
Subtask 29-16-11-410-051-A (1) Safety the filter bowl (3) to the filter head (1) with lockwire 0.8 mm (0.032 in.).
(2) Remove the container from below the filter.
(3) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(4) Remove the warning notices from the cockpit and from the ground service panel.
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel 197CB.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel 197CB.