DOC AIRBUS | AMM A320FServicing of the Reservoir Pressurization Filter
TASK 29-14-41-610-002-A
Servicing of the Reservoir Pressurization Filter
Self explanatory
2. Job Set-up Information
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 29-14-41-865-058-A
Subtask 29-14-41-020-053-A
Subtask 29-14-41-410-053-A
[Rev.10 from 2021]
2026.04.01 00:24:48 UTC
Servicing of the Reservoir Pressurization 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.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| (Material No.14CCB6) | Testing Medium-Leak Detection - Oxygen System |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 195AB |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 4 | O-RING | AIPC 29-14-41-01-050 |
| 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) |
| TASK 36-12-00-710-001-A | Operational Test of the APU Bleed Air Supply and Crossbleed Systems |
| TASK 49-00-00-860-005-A | APU Start by External Power |
| TASK 49-00-00-860-005-A-01 | APU Start by Batteries |
| TASK 49-00-00-860-006-A | APU Shutdown by External Power |
| TASK 49-00-00-860-006-A-01 | APU Shutdown by Batteries |
| TASK 49-00-00-860-008-A | APU Start by External Power |
| TASK 49-00-00-860-008-A-01 | APU Start by Batteries |
| TASK 49-00-00-860-009-A | APU Shutdown by External Power (131-9(A)) |
| TASK 49-00-00-860-009-A-01 | APU Shutdown by Batteries (131-9(A)) |
Reservoir Pressurization FilterSubtask 29-14-41-865-058-A
A. Open, safety and tag this(these) circuit breaker(s):
Subtask 29-14-41-860-059-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | HYD/HYD PWR/B WARN/& CTL | 2702GJ | C12 |
| ** 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/HYD POWER/Y | 3803GX | N30 |
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R34 |
| ** ON A/C ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
| ** ON A/C ALL | |||
| 123VU | B HYD/ELEC PUMP | 2701GJ | AB09 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
B. Aircraft Maintenance Configuration
(2) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green, Blue and Yellow hydraulic systems:
(Ref. AMM TASK 29-00-00-864-001).
(4) Depressurize the reservoirs of the Green, Blue and Yellow hydraulic systems (Ref. AMM TASK 29-14-00-614-001).
Subtask 29-14-41-010-054-A 4. ProcedureWARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
(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, Blue and Yellow hydraulic systems:
- in the cockpit on the hydraulic section 40VU of the overhead panel,
- on the ground service panel of the Green, Blue and Yellow hydraulic systems.
(Ref. AMM TASK 29-00-00-864-001).
(4) Depressurize the reservoirs of the Green, Blue and Yellow hydraulic systems (Ref. AMM TASK 29-14-00-614-001).
Subtask 29-14-41-020-053-A
A. Removal of the Filter Element
(1) Remove the spring clip (2) from the filter bowl (5).
(2) Remove the filter bowl (5) and the filter element (3).
(3) Remove and discard the filter element (3) and the O-ring (4).
Subtask 29-14-41-640-051-A (1) Remove the spring clip (2) from the filter bowl (5).
(2) Remove the filter bowl (5) and the filter element (3).
(3) Remove and discard the filter element (3) and the O-ring (4).
B. Preparation for Installation
(1) Lubricate the new AIPC 29-14-41-01-050 O-RING (4) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(2) Lubricate the O-ring of the new filter element (3) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(3) Lubricate the threads of the filter bowl (5) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
Subtask 29-14-41-420-053-A (1) Lubricate the new AIPC 29-14-41-01-050 O-RING (4) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(2) Lubricate the O-ring of the new filter element (3) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(3) Lubricate the threads of the filter bowl (5) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
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) Install the new O-ring (4) on the filter bowl (5).
(4) Do a check of the filter element (3) and make sure that it is clean and not damaged.
(5) Engage the filter element (3) in the reservoir pressurization unit (1).
(6) Install the filter bowl (5) in the reservoir pressurization unit (1).
(8) If the clogging indicator is out, push it in to set it again.
Subtask 29-14-41-790-054-A (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Install the new O-ring (4) on the filter bowl (5).
(4) Do a check of the filter element (3) and make sure that it is clean and not damaged.
(5) Engage the filter element (3) in the reservoir pressurization unit (1).
(6) Install the filter bowl (5) in the reservoir pressurization unit (1).
NOTE: Tighten the filter bowl with your hand only.
(7) Install the spring clip (2) on the filter bowl. (8) If the clogging indicator is out, push it in to set it again.
D. Test of the Filter and the Automatic Drain Valve
(1) Remove the WARNING NOTICE(S).
(2) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
1KD, 2KD, 1701GK, 1702GK, 2701GJ, 2702GJ, 3801GX, 3802GX, 3803GX.
(3) Operate the reservoir pressurizing system:
(b) Start the APU.
(d) At the same time as you pressurize the reservoirs, apply Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to the connection of the filter bowl and the reservoir pressurization unit.
(e) Make sure that there are no leaks between the filter bowl and the reservoir pressurization unit.
(f) Make sure that the clogging indicator stays in.
(g) Make sure that the automatic drain valve (6) is closed (you can see the green indicator).
(h) Stop the operation of the APU.
(j) Make sure that the automatic drain valve (6) is open.
(k) Pressurize the reservoirs of the Green, Blue and Yellow hydraulic system with a ground supply (Ref. AMM TASK 29-14-00-614-002) and examine for leaks as above.
5. Close-up(1) Remove the WARNING NOTICE(S).
(2) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
1KD, 2KD, 1701GK, 1702GK, 2701GJ, 2702GJ, 3801GX, 3802GX, 3803GX.
(3) Operate the reservoir pressurizing system:
NOTE: The pressurization of the reservoirs with the APU and the ground supply is necessary to make sure that the operation of the automatic drain valve is correct.
(a) Make sure that the automatic drain valve (6) is open. (b) Start the APU.
- (Ref. AMM D/O 49-00-00-86) or,
- (Ref. AMM TASK 49-00-00-860-005) or,
- (Ref. AMM TASK 49-00-00-860-008)
(d) At the same time as you pressurize the reservoirs, apply Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to the connection of the filter bowl and the reservoir pressurization unit.
(e) Make sure that there are no leaks between the filter bowl and the reservoir pressurization unit.
(f) Make sure that the clogging indicator stays in.
(g) Make sure that the automatic drain valve (6) is closed (you can see the green indicator).
(h) Stop the operation of the APU.
- (Ref. AMM D/O 49-00-00-86) or,
- (Ref. AMM TASK 49-00-00-860-006) or,
- (Ref. AMM TASK 49-00-00-860-009)
(j) Make sure that the automatic drain valve (6) is open.
(k) Pressurize the reservoirs of the Green, Blue and Yellow hydraulic system with a ground supply (Ref. AMM TASK 29-14-00-614-002) and examine for leaks as above.
Subtask 29-14-41-410-053-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 195AB.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 195AB.