W DOC AIRBUS | AMM A320F

Removal of the Check Valve

TASK 27-14-42-000-001-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.
CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
  • MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.
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
CONTAINER 1 L (1/4 USGAL)
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
98D27604000000
1
COLLAR-SAFETY, SPOILER
98D27604004000
1
COLLAR SAFETY SPOILER
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [1626GM]
575FB
FOR [1627GM]
675BB
 C. Referenced Information
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 27-60-00-866-002-A
Extension-Retraction of the Spoilers for Maintenance
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 57-51-37-000-004-A
Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
F Check Valve 1626GM
F Check Valve 1627GM
3. Job Set-up
Subtask 27-14-42-941-054-A
A. Safety Precautions
   (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (2) Put a WARNING NOTICE(S) on the ground service connection of the Green hydraulic system to tell persons not to pressurize it.
   (3) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flight control system.
Subtask 27-14-42-860-051-A
B. Aircraft Maintenance Configuration
   (1) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
   (2) Install the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION on the flap/slat control lever.
   (3) Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-001).
   (4) Depressurize the applicable hydraulic system.
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.
     (a) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
     (b) Depressurize the Green hydraulic system reservoir (Ref. AMM TASK 29-14-00-614-001).
Subtask 27-14-42-865-050-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/FLP/CTL AND MONG/SYS16CVB07
** ON A/C ALL
49VUHYD/FIRE VALVE/G/ENG11703GKC13
** ON A/C NOT FOR ALL
49VUHYDRAULIC/G HYD/PUMP ENG1/CTL1701GKH12
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/FLP/CTL AND MONG/SYS16CVB02
** ON A/C NOT FOR ALL
121VUHYDRAULIC/G HYD/PUMP ENG1/CTL1701GKR35
** ON A/C NOT FOR ALL
121VUHYDRAULIC/G HYD/PUMP ENG1/MONG1702GKR34
** ON A/C ALL
121VUFLIGHT CONTROLS/FLP/CTL AND/MONG/SYS28CVQ21
** ON A/C NOT FOR ALL
121VUHYDRAULIC/G HYD/PUMP ENG1/MONG1702GKR33
Subtask 27-14-42-010-050-A
D. Get Access
   (1) Put the access platform in position:
     (a) FOR [1626GM]
below zone 580
     (b) FOR [1627GM]
below zone 680.
   (2) If necessary, remove the access panel(s) (Ref. AMM TASK 57-51-37-000-004):
     (a) FOR [1626GM]
remove 575FB
     (b) FOR [1627GM]
remove 675BB.
   (3) Extend the applicable spoilers (Ref. AMM TASK 27-60-00-866-002).
   (4) Put the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER on the piston rod of the servo-control.
NOTE: When you install the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER , make sure that the two pins are positioned aft of the actuator, away from the spoiler structure.
4. Procedure
CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
  • MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.
Subtask 27-14-42-020-050-A
A. Removal of the Check Valve
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
   (1) Put a CONTAINER 1 L (1/4 USGAL) for hydraulic fluid below the check valve (3).
   (2) Disconnect the coupling nuts (1) and (3) and remove the check valve (2). If necessary, remove the clamp block adjacent to the check valve (2).
   (3) Put blanking caps on the disconnected line ends.
[Rev.10 from 2021] 2026.03.31 23:47:29 UTC
"Aviabrain" 2025