DOC AIRBUS | AMM A320FInstallation of the Check Valve
TASK 29-11-48-400-002-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 29-11-48-941-063-A
Subtask 29-11-48-420-053-A
Subtask 29-11-48-865-058-A
[Rev.10 from 2021]
2026.04.01 00:16:40 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.
FIN: 1170GM
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 3M (10 FT) |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98D27803000000 | 1 | LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION |
| 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 |
|---|---|
| 675DB |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 27-50-00-866-008-A | Extension of the Flaps on the Ground |
| TASK 27-50-00-866-008-A-01 | Extension of the Flaps/Slats on the Ground |
| TASK 27-51-00-710-001-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 29-10-00-864-001-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) |
Flap WTB Check Valve 1170GMSubtask 29-11-48-941-063-A
A. Safety Precautions
(2) Make sure that the SAFETY BARRIER(S) are in position.
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the Green hydraulic system.
(4) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the flaps.
Subtask 29-11-48-860-056-A WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) You must obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) when you do work on the hydraulic system. (2) Make sure that the SAFETY BARRIER(S) are in position.
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the Green hydraulic system.
(4) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the flaps.
B. Aircraft Maintenance Configuration
(1) Make sure that the flaps are fully extended (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever on panel 114VU.
(3) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(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 reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(6) Make sure that the ACCESS PLATFORM 3M (10 FT) is in position.
(7) Make sure that the access panel 675DB is removed.
Subtask 29-11-48-865-056-A (1) Make sure that the flaps are fully extended (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever on panel 114VU.
(3) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(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 reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(6) Make sure that the ACCESS PLATFORM 3M (10 FT) is in position.
(7) Make sure that the access panel 675DB is removed.
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/SEC1/NORM/SPLY | 21CE1 | B08 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B03 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| ** ON A/C ALL | |||
| 105VU | FLT CTL/SEC1/STBY SPLY | 22CE | 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/FLP/SYS2 | 12CV | P20 |
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 121VU | FLIGHT CONTROLS/SEC3/SPLY | 21CE3 | Q19 |
| 121VU | FLIGHT CONTROLS/SEC2/SPLY | 21CE2 | Q18 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
| ** ON A/C ALL | |||
| 122VU | FLIGHT CONTROLS/WTB/FLP/SYS1 | 10CV | S07 |
Subtask 29-11-48-420-053-A
A. Preparation for Installation
(2) Clean the component interfaces and the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the hydraulic line end-fittings are in the correct condition.
(5) Make sure that the parts retained from the removed component are clean and in the correct condition.
Subtask 29-11-48-420-051-A WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(1) Remove the blanking plugs from the line ends. (2) Clean the component interfaces and the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the hydraulic line end-fittings are in the correct condition.
(5) 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) Install the check valve (4) on the coupling nut (5).
(3) Put the pipe (2) in position and attach it with the coupling nuts (1) and (3).
Subtask 29-11-48-860-055-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) Install the check valve (4) on the coupling nut (5).
(3) Put the pipe (2) in position and attach it with the coupling nuts (1) and (3).
C. Aircraft Configuration
(1) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever on panel 114VU.
(2) Make sure that the work area is clean and clear of tools and other items.
Subtask 29-11-48-865-057-A (1) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever on panel 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 29-11-48-860-057-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B08 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B03 |
| ** ON A/C ALL | |||
| 105VU | FLT CTL/SEC1/STBY SPLY | 22CE | 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/SEC3/SPLY | 21CE3 | Q19 |
| 121VU | FLIGHT CONTROLS/SEC2/SPLY | 21CE2 | Q18 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
E. Aircraft Maintenance Configuration
(1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
Subtask 29-11-48-710-051-A (1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
F. Test
(1) Do an operational test of the wing tip brake and the pressure off brake (Ref. AMM TASK 27-51-00-710-001).
(2) Make sure that hydraulic fluid does not leak from the coupling nuts (1), (3) and (5) and the check valve (4).
5. Close-up(1) Do an operational test of the wing tip brake and the pressure off brake (Ref. AMM TASK 27-51-00-710-001).
(2) Make sure that hydraulic fluid does not leak from the coupling nuts (1), (3) and (5) and the check valve (4).
Subtask 29-11-48-865-058-A
A. Open, safety and tag this(these) circuit breaker(s):
Subtask 29-11-48-410-051-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 675DB.
Subtask 29-11-48-865-059-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 675DB.
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-11-48-942-051-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
D. 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.