W DOC AIRBUS | AMM A320F

Removal of the Check Valve

TASK 29-12-37-000-001-A
Removal of the Check Valve

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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE 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.
FIN: 2410GM
FIN: 2411GM
1. Reason for the Job
Self 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
PLUG - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
1
WARNING NOTICE(S)
98D27803500001
1
LOCKING TOOL ZERO POS
 B. Work Zones and Access Panels
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
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 27-80-00-866-005-A
Retracting the Slats on the Ground
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 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
F Slat WTB Check Valve 2410GM (2411GM)
3. Job Set-up
Subtask 29-12-37-941-064-A
A. Safety Precautions
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) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (3) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Blue hydraulic system.
   (4) Put a WARNING NOTICE(S) in position to tell persons not to operate the slats.
Subtask 29-12-37-860-050-A
B. Aircraft Maintenance Configuration
   (1) Make sure that the slats are retracted fully (Ref. AMM TASK 27-80-00-866-005).
   (2) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever on panel 114VU.
   (3) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-00-00-864-001).
   (4) Depressurize the Blue hydraulic-system reservoir (Ref. AMM TASK 29-14-00-614-001).
   (5) Remove the safety collar from the circuit breakers 9CV and 11CV.
Subtask 29-12-37-865-050-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C ALL
49VUHYD/HYD PWR/B WARN/& CTL2702GJC12
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/WTB/SLT/SYS211CVP19
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
122VUFLIGHT CONTROLS/WTB/SLT/SYS19CVS06
123VUB HYD/ELEC PUMP2701GJAB09
Subtask 29-12-37-010-050-A
D. Get Access
   (1) Put an ACCESS PLATFORM 4M (13 FT) below the applicable access panel.
   (2) Remove the applicable access panel:
     (a) FOR [2410GM] (CHECK VALVE-SLAT WTB B RETURN, L WING)
remove 522SB
     (b) FOR [2411GM] (CHECK VALVE-SLAT WTB B RETURN, R WING)
remove 622SB.
   (3) Put a CONTAINER 5 L (1.32 USGAL) below the applicable check valve.
4. Procedure
Subtask 29-12-37-020-050-A
A. Removal of the Check Valve
WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
  • FLUSH IT AWAY WITH CLEAN WATER
  • GET MEDICAL AID.
CAUTION: MAKE SURE THAT THE FLUID DOES NOT STAY ON THE AIRCRAFT STRUCTURE. IF THE FLUID GETS ON THE AIRCRAFT STRUCTURE, WASH IT OFF IMMEDIATELY WITH SOAP AND WATER.
   (1) Disconnect the coupling nuts (1) and (3) and remove the pipe (2).
   (2) Remove the check valve (4) from the coupling nut (5).
   (3) Put the PLUG-BLANKING in each disconnected line end.
   (4) Remove the CONTAINER 5 L (1.32 USGAL) and discard the hydraulic fluid correctly.
[Rev.10 from 2021] 2026.04.01 00:19:15 UTC
"Aviabrain" 2025