DOC AIRBUS | AMM A320FInstallation of the Check Valve
TASK 29-12-37-400-001-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 29-12-37-941-061-A
Subtask 29-12-37-420-054-A
Subtask 29-12-37-864-056-A
[Rev.10 from 2021]
2026.04.01 00:19:17 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 | AR | SAFETY BARRIER(S) |
| 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.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [2410GM] (CHECK VALVE-SLAT WTB B RETURN, L WING) | |
| 522SB | |
| FOR [2411GM] (CHECK VALVE-SLAT WTB B RETURN, R WING) | |
| 622SB | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 27-80-00-866-005-A | Retracting the Slats on the Ground |
| TASK 27-81-00-710-001-A | Operational Test of the Wing-Tip Brake and the Pressure-Off Brake |
| 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 29-10-00-863-003-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 29-10-00-864-003-A | Depressurize the Blue Hydraulic System |
| TASK 29-14-00-614-001-A | Depressurization of the Hydraulic Reservoirs |
Slat WTB Check Valve 2410GM (2411GM)Subtask 29-12-37-941-061-A
A. Safety Precautions
(2) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the Blue 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 SAFETY BARRIER(S) are in position.
Subtask 29-12-37-860-053-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 WARNING NOTICE(S) is in position to tell persons not to pressurize the Blue 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 SAFETY BARRIER(S) are in position.
B. Aircraft Maintenance Configuration
(1) Make sure that the Blue hydraulic system is depressurized (Ref. AMM TASK 29-00-00-864-001).
(2) Make sure that the applicable hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the ACCESS PLATFORM 4M (13 FT) is in position.
(4) Make sure the the access panels 522SB and/or 622SB are removed.
(5) Make sure that the slat/flaps are fully retracted (Ref. AMM TASK 27-80-00-866-005).
(6) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is on the flap/slat control lever on panel 114VU.
Subtask 29-12-37-865-052-A (1) Make sure that the Blue hydraulic system is depressurized (Ref. AMM TASK 29-00-00-864-001).
(2) Make sure that the applicable hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the ACCESS PLATFORM 4M (13 FT) is in position.
(4) Make sure the the access panels 522SB and/or 622SB are removed.
(5) Make sure that the slat/flaps are fully retracted (Ref. AMM TASK 27-80-00-866-005).
(6) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is on the flap/slat control lever on panel 114VU.
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 ALL | |||
| 49VU | HYD/HYD PWR/B WARN/& CTL | 2702GJ | C12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/WTB/SLT/SYS2 | 11CV | P19 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| 122VU | FLIGHT CONTROLS/WTB/SLT/SYS1 | 9CV | S06 |
| 123VU | B HYD/ELEC PUMP | 2701GJ | AB09 |
Subtask 29-12-37-420-054-A
A. Preparation for Installation
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Remove the blanking caps from the hydraulic line ends.
Subtask 29-12-37-420-050-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 area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) . (2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Remove the blanking caps from the hydraulic line ends.
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 the coupling nuts (1) and (3).
(4) Remove the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS from the flap/slat control lever on panel 114VU.
Subtask 29-12-37-865-053-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 the coupling nuts (1) and (3).
(4) Remove the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS from the flap/slat control lever on panel 114VU.
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-12-37-863-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C ALL | |||
| 49VU | HYD/HYD PWR/B WARN/& CTL | 2702GJ | C12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/WTB/SLT/SYS2 | 11CV | P19 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| 122VU | FLIGHT CONTROLS/WTB/SLT/SYS1 | 9CV | S06 |
| 123VU | B HYD/ELEC PUMP | 2701GJ | AB09 |
D. Pressurize the Applicable Hydraulic System
(1) Pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-863-003).
(2) Make sure that the work area is clean and clear of tools and other items.
Subtask 29-12-37-710-050-A (1) Pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-863-003).
(2) Make sure that the work area is clean and clear of tools and other items.
E. Test
(1) Do an operational test of the slat WTB (Ref. AMM TASK 27-81-00-710-001).
(2) Make sure the check valve (4) and the coupling nuts (1), (3) and (5) do not leak.
5. Close-up(1) Do an operational test of the slat WTB (Ref. AMM TASK 27-81-00-710-001).
(2) Make sure the check valve (4) and the coupling nuts (1), (3) and (5) do not leak.
Subtask 29-12-37-864-056-A
A. Depressurize the Hydraulics
(1) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).
Subtask 29-12-37-865-054-A (1) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 29-12-37-410-050-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 [2410GM] (CHECK VALVE-SLAT WTB B RETURN, L WING)
install 522SB
(b) FOR [2411GM] (CHECK VALVE-SLAT WTB B RETURN, R WING)
install 622SB
Subtask 29-12-37-865-055-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 [2410GM] (CHECK VALVE-SLAT WTB B RETURN, L WING)
install 522SB
(b) FOR [2411GM] (CHECK VALVE-SLAT WTB B RETURN, R WING)
install 622SB
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-12-37-942-050-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 the Equipment
(1) Install the safety collar on the circuit breakers 9CV and 11CV.
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Install the safety collar on the circuit breakers 9CV and 11CV.
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.