DOC AIRBUS | AMM A320FInstallation of the Safety Valves
TASK 32-31-19-400-001-A
Installation of the Safety Valves
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 32-31-19-860-051-A
Subtask 32-31-19-420-051-B
Subtask 32-31-19-410-050-A
[Rev.10 from 2021]
2026.04.01 00:44:42 UTC
Installation of the Safety Valves
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.
WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | Torque wrench: range to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| (Material No.04JMD9) | Top Coat Polyurethane-- Decorative Furnishing |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 744 | MAIN DOOR |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 2 | SEALS | AIPC 32-31-03-36-120 |
| 3 | BACK-UP RINGS | AIPC 32-31-03-36-130 |
| 5 | BACK-UP RINGS | AIPC 32-31-03-36-140 |
| 6 | PACKINGS | AIPC 32-31-03-36-150 |
| 2 | SEALS | AIPC 32-31-83-36-110 |
| 3 | BACK-UP RINGS | AIPC 32-31-83-36-120 |
| 5 | BACK-UP RINGS | AIPC 32-31-83-36-130 |
| 6 | PACKINGS | AIPC 32-31-83-36-140 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-12-29-611-001-A | Fill the Hydraulic Fluid Reservoir with a Hand Pump |
| TASK 20-23-21-911-001-A | Removal/Installation of the Bobbins from their Housings and Installation of O-rings, Square Seals, and Back-up Rings on the Bobbins |
| 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 32-31-00-710-002-A | Operational Test of the Landing Gear Doors (With False Targets) |
| TASK 32-31-00-710-002-A-01 | Operational Test of the Landing Gear Doors (Without False Targets) |
| TASK 32-51-00-720-003-A | Functional Test of the Nose Wheel Steering with the Handwheel |
| TASK 51-75-13-916-002-A | Repair to a layer of Corrosion Preventive Compound |
Safety Valves 2629GM/2630GM - NLG Door Closing/OpeningSubtask 32-31-19-860-051-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 aircraft electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002) or the flight configuration precautions were obeyed (Ref. AMM TASK 32-00-00-860-001).
(3) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(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 warning notices are in position to tell persons not to pressurize the Green hydraulic system:
Subtask 32-31-19-865-052-A (1) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(2) Make sure that the aircraft electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002) or the flight configuration precautions were obeyed (Ref. AMM TASK 32-00-00-860-001).
(3) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(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 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 panel of the Green hydraulic system.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 32-31-19-560-050-B | 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 |
C. Preparation for Installation
(1) Clean the component interfaces and the adjacent area.
(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 Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packings (6) and the new back-up rings (5).
(6) If necessary, apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new seals (2) and the new back-up rings (3).
4. Procedure(1) Clean the component interfaces and the adjacent area.
(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 Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packings (6) and the new back-up rings (5).
(6) If necessary, apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new seals (2) and the new back-up rings (3).
Subtask 32-31-19-420-051-B
A. Installation of the Valves (1) and (7) on the Manifold Assy (8)
(1) Remove the blanking plugs.
(2) If removed, install the new AIPC 32-31-03-36-130 BACK-UP RINGS (3) or AIPC 32-31-83-36-120 BACK-UP RINGS (3) and the new AIPC 32-31-03-36-120 SEALS (2) or AIPC 32-31-83-36-110 SEALS (2) on the bobbins (4) and install the bobbins (4) in the manifold (8) (Ref. AMM TASK 20-23-21-911-001).
(3) Remove the blanking plugs.
(4) Install the new AIPC 32-31-03-36-140 BACK-UP RINGS (5) or AIPC 32-31-83-36-130 BACK-UP RINGS (5) and the new AIPC 32-31-03-36-150 PACKINGS (6) or AIPC 32-31-83-36-140 PACKINGS (6) on the bobbins (4) (Ref. AMM TASK 20-23-21-911-001).
(5) Put the safety valves (1) and (7) in position on the manifold (8).
(7) Install the bolts (11) and the washers (9).
(8) TORQUE the bolts (10) and (11) to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in ).
(9) Make a mark with Top Coat Polyurethane-- Decorative Furnishing (Material No.04JMD9) on the bolts (10) and (11).
Subtask 32-31-19-860-052-A (1) Remove the blanking plugs.
(2) If removed, install the new AIPC 32-31-03-36-130 BACK-UP RINGS (3) or AIPC 32-31-83-36-120 BACK-UP RINGS (3) and the new AIPC 32-31-03-36-120 SEALS (2) or AIPC 32-31-83-36-110 SEALS (2) on the bobbins (4) and install the bobbins (4) in the manifold (8) (Ref. AMM TASK 20-23-21-911-001).
(3) Remove the blanking plugs.
(4) Install the new AIPC 32-31-03-36-140 BACK-UP RINGS (5) or AIPC 32-31-83-36-130 BACK-UP RINGS (5) and the new AIPC 32-31-03-36-150 PACKINGS (6) or AIPC 32-31-83-36-140 PACKINGS (6) on the bobbins (4) (Ref. AMM TASK 20-23-21-911-001).
(5) Put the safety valves (1) and (7) in position on the manifold (8).
NOTE: When you install the valves (1) and (7), you must not damage the packings (6).
(6) Install the bolts (10) and the washers (9). (7) Install the bolts (11) and the washers (9).
(8) TORQUE the bolts (10) and (11) to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )
. (9) Make a mark with Top Coat Polyurethane-- Decorative Furnishing (Material No.04JMD9) on the bolts (10) and (11).
B. 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.
(4) Remove the WARNING NOTICE(S).
(5) Remove the access platform(s).
(6) Close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
(7) If necessary fill the reservoir of the Green hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
Subtask 32-31-19-865-053-A (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.
(4) Remove the WARNING NOTICE(S).
(5) Remove the access platform(s).
(6) Close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
(7) If necessary fill the reservoir of the Green hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 32-31-19-710-051-A | 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 |
D. Test of the Valves and Manifold Assy
(1) Do the operational test of the landing gear doors (Ref. AMM TASK 32-31-00-710-002).
(2) Do the functional test of the nose wheel steering (Ref. AMM TASK 32-51-00-720-003).
(3) Open the left MLG door (Ref. AMM TASK 32-12-00-010-001).
(4) Make sure that there is no hydraulic fluid leakage from the safety valves 2629GM and 2630GM.
5. Close-up(1) Do the operational test of the landing gear doors (Ref. AMM TASK 32-31-00-710-002).
(2) Do the functional test of the nose wheel steering (Ref. AMM TASK 32-51-00-720-003).
(3) Open the left MLG door (Ref. AMM TASK 32-12-00-010-001).
(4) Make sure that there is no hydraulic fluid leakage from the safety valves 2629GM and 2630GM.
Subtask 32-31-19-410-050-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Apply corrosion preventive compound to the heads of the bolts (10) and (11) and the adjacent area (Ref. AMM TASK 51-75-13-916-002).
(3) Remove the access platform(s).
(4) Close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Apply corrosion preventive compound to the heads of the bolts (10) and (11) and the adjacent area (Ref. AMM TASK 51-75-13-916-002).
(3) Remove the access platform(s).
(4) Close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.