DOC AIRBUS | AMM A320FInstallation of the Check Valve
TASK 29-11-48-400-001-A
Installation of the Check Valve
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 29-11-48-941-056-A
Subtask 29-11-48-420-052-A
Subtask 29-11-48-864-056-A
[Rev.10 from 2021]
2026.04.01 00:16:38 UTC
Installation of the Check Valve
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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:
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 | 1 | ACCESS PLATFORM 4M (13 FT) |
| No specific | 1 | CONTAINER 5 L (1.32 USGAL) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98D27803500001 | 1 | LOCKING TOOL ZERO POS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1410GM] (CHECK VALVE-SLAT WTB G RETURN, L WING) | |
| 522SB | |
| FOR [1411GM] (CHECK VALVE-SLAT WTB G RETURN, R WING) | |
| 622SB | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 27-81-00-710-001-A | Operational Test of the Wing-Tip Brake and the Pressure-Off Brake |
| 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 29-10-00-864-001-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 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 |
Slat WTB Check Valves 1410GM(1411GM)Subtask 29-11-48-941-056-A
A. Safety Precautions
(2) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the Green hydraulic system.
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the slats.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the flap/slat control lever on panel 114VU.
Subtask 29-11-48-860-053-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 WARNING NOTICE(S) is in position to tell persons not to pressurize the Green hydraulic system.
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the slats.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the flap/slat control lever on panel 114VU.
B. 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 ACCESS PLATFORM 4M (13 FT) is in position.
(3) Make sure the applicable access panels 522SB(622SB) are removed.
(4) Make sure that the Green hydraulic system has been depressurized (Ref. AMM TASK 29-10-00-864-001).
(5) Make sure that the Green hydraulic system reservoir has been depressurized (Ref. AMM TASK 29-14-00-614-001).
(6) Make sure that the safety collars have been removed from the circuit breakers 9CV and 11CV.
Subtask 29-11-48-865-052-A (1) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT) is in position.
(3) Make sure the applicable access panels 522SB(622SB) are removed.
(4) Make sure that the Green hydraulic system has been depressurized (Ref. AMM TASK 29-10-00-864-001).
(5) Make sure that the Green hydraulic system reservoir has been depressurized (Ref. AMM TASK 29-14-00-614-001).
(6) Make sure that the safety collars have been removed from the circuit breakers 9CV and 11CV.
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** 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 | FLIGHT CONTROLS/WTB/SLT/SYS2 | 11CV | P19 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
| ** ON A/C ALL | |||
| 122VU | FLIGHT CONTROLS/WTB/SLT/SYS1 | 9CV | S06 |
Subtask 29-11-48-420-052-A
A. Preparation for Installation
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Put a CONTAINER 5 L (1.32 USGAL) below the applicable check valve.
(4) Remove the blanking plugs from the line ends.
(5) Make sure that the hydraulic line end-fittings are in the correct condition.
(6) Make sure that the parts retained from the removed component are clean and in the correct condition.
Subtask 29-11-48-420-050-A WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(1) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) . (2) Do an inspection of the component interfaces and the adjacent area.
(3) Put a CONTAINER 5 L (1.32 USGAL) below the applicable check valve.
(4) Remove the blanking plugs from the line ends.
(5) Make sure that the hydraulic line end-fittings are in the correct condition.
(6) Make sure that the parts retained from the removed component are clean and in the correct condition.
B. Installation of the Check Valve
(1) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the check valve (4) and the coupling nuts (1), (3) and (5).
(2) Attach the check valve (4) to the coupling nut (5).
(3) Install the pipe (2) and attach it with the coupling nuts (1) and (3).
Subtask 29-11-48-860-052-A (1) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the check valve (4) and the coupling nuts (1), (3) and (5).
(2) Attach the check valve (4) to the coupling nut (5).
(3) Install the pipe (2) and attach it with the coupling nuts (1) and (3).
C. Aircraft Configuration
(1) Remove the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS from the flap/slat control lever on 114VU.
(2) Make sure that the work area is clean and clear of tools and other items.
Subtask 29-11-48-865-053-A (1) Remove the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS from the flap/slat control lever on 114VU.
(2) Make sure that the work area is clean and clear of tools and other items.
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-11-48-860-054-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** 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 | FLIGHT CONTROLS/WTB/SLT/SYS2 | 11CV | P19 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
| ** ON A/C ALL | |||
| 122VU | FLIGHT CONTROLS/WTB/SLT/SYS1 | 9CV | S06 |
E. Aircraft Configuration
(1) Install the safety collar on the circuit breakers 9CV and 11CV.
(2) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
Subtask 29-11-48-863-050-A (1) Install the safety collar on the circuit breakers 9CV and 11CV.
(2) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
F. Pressurize the Applicable Hydraulic System
Subtask 29-11-48-710-050-A WARNING:
PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.
(1) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001). G. Test
(1) Do a Wing Tip Brake and Pressure-Off Brake test (Ref. AMM TASK 27-81-00-710-001).
(2) Make sure that the check valve does not leak.
5. Close-up(1) Do a Wing Tip Brake and Pressure-Off Brake test (Ref. AMM TASK 27-81-00-710-001).
(2) Make sure that the check valve does not leak.
Subtask 29-11-48-864-056-A
A. Depressurize the Hydraulic System
(1) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
Subtask 29-11-48-865-054-A (1) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 29-11-48-410-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel:
(a) FOR [1410GM] (CHECK VALVE-SLAT WTB G RETURN, L WING)
install 522SB
(b) FOR [1411GM] (CHECK VALVE-SLAT WTB G RETURN, R WING)
install 622SB
Subtask 29-11-48-865-055-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel:
(a) FOR [1410GM] (CHECK VALVE-SLAT WTB G RETURN, L WING)
install 522SB
(b) FOR [1411GM] (CHECK VALVE-SLAT WTB G RETURN, R WING)
install 622SB
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-11-48-942-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
E. Removal of Equipment
(1) Remove the SAFETY BARRIER(S).
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the SAFETY BARRIER(S).
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.