DOC AIRBUS | AMM A320FGeneral Removal and Installation Procedure of the Check Valves in the Hydraulic Systems
TASK 29-00-00-910-003-A
General Removal and Installation Procedure of the Check Valves in the Hydraulic Systems
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 29-00-00-860-079-A
Subtask 29-00-00-020-050-A
Subtask 29-00-00-860-081-A
[Rev.10 from 2021]
2026.04.01 07:56:35 UTC
General Removal and Installation Procedure of the Check Valves in the Hydraulic Systems
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:
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:
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 | 1 | CONTAINER - HYDRAULIC FLUID RESISTANT |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| (Material No.14QEB1) | Wire-Locking Dia: 0.6 mm CRES Nickel Alloy - |
| (Material No.14QFB1) | Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-12-29-611-001-A | Fill the Hydraulic Fluid Reservoir with a Hand Pump |
| TASK 12-12-29-611-002-A | Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart |
| TASK 20-11-11-911-001-A | Safetying with Lockwire |
| TASK 20-21-12-911-001-A | Tightening Torques for Pipe Unions (not for OXYGEN Unions) |
| 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 29-10-00-863-001-A | Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-863-002-A | Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-863-003-A | Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-863-003-A-01 | Pressurize the Blue Hydraulic System with the Blue Electric Pump |
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 29-10-00-864-003-A | Depressurize the Blue 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 29-23-00-863-001-A | Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump |
| TASK 29-23-00-864-001-A | Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU |
Subtask 29-00-00-860-079-A
A. Aircraft Maintenance Configuration
(2) Make sure that the Green, Blue or Yellow hydraulic system (as applicable) is depressurized and put it in the maintenance configuration (Ref. AMM TASK 29-00-00-864-001).
(3) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green, Blue or Yellow hydraulic system (as applicable):
(5) Put a CONTAINER - HYDRAULIC FLUID RESISTANT below the related check valve to collect hydraulic fluid.
Subtask 29-00-00-410-067-A WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002). (2) Make sure that the Green, Blue or Yellow hydraulic system (as applicable) is depressurized and put it in the maintenance configuration (Ref. AMM TASK 29-00-00-864-001).
(3) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green, Blue or Yellow hydraulic system (as applicable):
- In the cockpit on the hydraulic section 40VU of the overhead panel.
- On the ground service panel of the applicable hydraulic system.
(5) Put a CONTAINER - HYDRAULIC FLUID RESISTANT below the related check valve to collect hydraulic fluid.
B. Get access to the related check valve.
4. ProcedureSubtask 29-00-00-020-050-A
A. Removal of the Check Valves
(1) Check Valve Inline Assembly:
(a) Loosen the unions connected to the in- and output of the check valve.
(b) Remove the check valve.
(2) Check Valve Inline/Block Assembly:
(a) Remove the union connected to the check valve.
(b) Remove the check valve from the related manifold.
(c) Remove and discard the O-ring.
(3) Check Valve Block Assembly:
(a) Remove the check valve from the related manifold.
(b) Remove and discard the O-ring and the back-up rings.
Subtask 29-00-00-860-080-A (1) Check Valve Inline Assembly:
(a) Loosen the unions connected to the in- and output of the check valve.
(b) Remove the check valve.
(2) Check Valve Inline/Block Assembly:
(a) Remove the union connected to the check valve.
(b) Remove the check valve from the related manifold.
(c) Remove and discard the O-ring.
(3) Check Valve Block Assembly:
(a) Remove the check valve from the related manifold.
(b) Remove and discard the O-ring and the back-up rings.
B. 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) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new O-rings and to the new back up rings.
Subtask 29-00-00-420-050-A (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new O-rings and to the new back up rings.
C. Installation of the Check Valves
(1) Check Valve Inline Assembly:
(a) Position the check valves between the hydraulic lines and TORQUE the unions.
(a) Install the check valve with a new O-ring into the manifold or the reducer and TORQUE it.
(a) Make sure that the back-up rings and the O-ring are in the correct position.
14QEB1 Wire-Locking Dia: 0.6 mm CRES Nickel Alloy - 14QFB1 Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
Subtask 29-00-00-910-053-A (1) Check Valve Inline Assembly:
(a) Position the check valves between the hydraulic lines and TORQUE the unions.
NOTE: For the torque values refer to ATA 20-21-12 paragraph 4.A.(4) (Ref. AMM TASK 20-21-12-911-001).
NOTE: For the material of the hydraulic equipment refer to the IPC.
NOTE: For the check valve material refer to the Table I.
(2) Check Valve Inline/Block Assembly: (a) Install the check valve with a new O-ring into the manifold or the reducer and TORQUE it.
NOTE: For the torque values refer to the Table II.
(b) Install the union to the check valve and TORQUE it. NOTE: For the torque values refer to ATA 20-21-12 paragraph 4.A.(6)(b) (Ref. AMM TASK 20-21-12-911-001).
NOTE: For the pipe material refer to IPC.
NOTE: For the check valve material refer to the Table II.
NOTE: Hold the check valve with a spanner to make sure that you do not apply the higher torque to the manifold.
(3) Check Valve Block Assembly: (a) Make sure that the back-up rings and the O-ring are in the correct position.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(b) Install the check valve into the manifold and TORQUE it. NOTE: For the torque values refer to the Table III.
(4) If possible, safety the check valve with the lockwire, D. Torque Values of the Check Valves (Inline Assembly) Table I
Subtask 29-00-00-910-055-A | FIN | ITEM CODE INLET | ITEM CODE OUTLET | CHECK VALVE MATERIAL |
|---|---|---|---|
| 1131GM 1524GM 1704GM 2040GM 2131GM 2467GM 3131GM 3188GM 3626GM 3627GM | -04 | -05 | CRES |
| 1020GM 1170GM 1277GM 1410GM 1411GM 1626GM 1627GM 2170GM 2405GM 2410GM 2411GM 3017GM 3020GM 3056GM 3083GM 3170GM 3184GM 3618GM | -06 | -08 | CRES |
| 2050GM | -08 | -10 | CRES |
| 2055GM 2057GM 2144GM 3024GM | -10 | -12 | CRES |
| 1019GM 2028GM 3019GM | -12 | -16 | CRES |
| 2029GM | -16 | -20 | CRES |
| 3018GM | -20 | -24 | CRES |
E. Torque Values of the Check Valves (Inline/Block Assembly) Table II
Subtask 29-00-00-910-056-A NOTE: (1) For the torque values refer to ATA 20-21-12 paragraph 4.A.(6)(a) (Ref. AMM TASK 20-21-12-911-001). Use the manifold and check valve material from the Table II.
| FIN | ITEM CODE INLET | ITEM CODE OUTLET | CHECK VALVE MATERIAL | MANIFOLD MATERIAL | TORQUE VALUE CHECK VALVE TO BLOCK m.daN (lbf.ft) |
|---|---|---|---|---|---|
| 1018GM | -20 | -24 | CRES | ALUMINUM ALLOY | Refer to NOTE (1) |
| 1022GM | -16 | -20 | CRES | - | For P/N series 1559A9900: 12.9 - 14.2 (95.13 - 104.72) For P/N series D29070207: 9.10 - 10.24 (67.11 - 75.52) |
| 1024GM | -06 | -08 | CRES | ALUMINUM ALLOY | Refer to NOTE (1) |
| 1093GM | -10 | -12 | CRES | - | For P/N series 1555A9900/ 1555B9900: 7.5 - 8.3 (55.31 - 61.21) For P/N series D29070206: 4.320 - 4.609 (31.86 - 33.99) |
| 2022GM | -10 | -12 | CRES | - | For P/N series 1554A9900: 7.5 - 8.3 (55.31 - 61.21) For P/N series D29070194: 4.320 - 4.609 (31.86 - 33.99) |
| 2041GM | -06 | -08 | CRES | Manifold material: ALUMINUM ALLOY Reducer material: CRES | Refer to NOTE (1) |
| 2057GM | -10 | -12 | CRES | - | 3.186 - 3.470 (23.50 - 25.59) |
| 3017GM | -06 | -08 | CRES | ALUMINUM ALLOY | Refer to NOTE (1) |
| 3022GM | -16 | -20 | CRES | - | For P/N series 1553A9900: 12.9 - 14.2 (95.13 - 104.72) For P/N series D29070184: 9.10 - 10.24 (67.11 - 75.52) |
| 3058GM | -08 | -10 | CRES | STAINLESS STEEL | For P/N series D32470105: 4.32 - 4.60 (31.86 - 33.92) For P/N series D32470108: Refer to NOTE (1) |
| 3093GM | -12 | -16 | CRES | - | For P/N D29070179000: 4.32 - 4.61 (31.86 - 34.00) For P/Ns from D29070179002 to D29070179018: 6.26 - 6.83 (46.17 - 50.37) For P/N series 1559A9900: 9.7 - 10.7 (71.53 - 78.91) |
| 2059GM | -10 | -12 | STAINLESS STEEL | - | 6.258 - 6.827 (46.15 - 50.35) |
F. Torque Values of the Check Valves (Block Assembly) Table III
Subtask 29-00-00-790-051-A | FIN | TORQUE VALUE m.daN (lbf.ft) |
|---|---|
| 1059GM | 10.24 - 11.379 (75.52 - 83.92) |
| 1094GM | 6.258 - 6.827 (46.15 - 50.35) |
| 3059GM | 10.24 - 11.379 (75.52 - 83.92) |
| 3094GM | For P/N D29070179000: 6.26 - 6.83 (46.17 - 50.37) For P/Ns from D29070179002 to D29070179018: 10.24 - 11.38 (75.52 - 83.92) |
G. Leak Test
(1) Make sure that the fluid level in the reservoir of the related hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(2) Pressurize the reservoirs of the hydraulic systems (Ref. AMM TASK 29-14-00-614-002).
(3) Pressurize the Green, Yellow or Blue hydraulic system (as applicable) (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001), (Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-10-00-863-003).
(4) Examine the related connection for leaks.
5. Close-up(1) Make sure that the fluid level in the reservoir of the related hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(2) Pressurize the reservoirs of the hydraulic systems (Ref. AMM TASK 29-14-00-614-002).
(3) Pressurize the Green, Yellow or Blue hydraulic system (as applicable) (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001), (Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-10-00-863-003).
(4) Examine the related connection for leaks.
NOTE: Leaks are not permitted.
(5) Depressurize the hydraulic system pressurized above (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001), (Ref. AMM TASK 29-10-00-864-002) or (Ref. AMM TASK 29-10-00-864-003). Subtask 29-00-00-860-081-A
A. Put the aircraft back to the serviceable condition.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the door(s) which you opened for access.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the door(s) which you opened for access.