W DOC AIRBUS | AMM A320F

Removal of the Solenoid Valve from the Slat Wing-Tip Brake (WTB)

TASK 27-81-51-000-004-A
Removal of the Solenoid Valve from the Slat Wing-Tip Brake (WTB)

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.
ZONE: 522
ZONE: 622
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 4M (13 FT)
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
98L12003001000
AR
HARNESS,SAFETY
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
522
OUTBOARD FIXED L.E STRUCTURE
622
OUTBOARD FIXED L.E STRUCTURE
522SB, 622SB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 27-80-00-866-005-A
Retracting the Slats on the Ground
TASK 29-10-00-864-001-A
Depressurize the Green Hydraulic System
TASK 29-10-00-864-003-A
Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
TASK 57-41-37-000-006-A
Removal of the Access Panels
F Solenoid Valve - Slat WTB
3. Job Set-up
Subtask 27-81-51-941-058-A
A. Safety Precautions
   (1) Put the SAFETY BARRIER(S) in position.
   (2) In the cockpit, put the WARNING NOTICE(S) in position to tell persons not to operate the flap/slat controls.
   (3) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
   (4) Attach a safety harness:
WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.
     (a) Put on and attach a 98L12003001000 HARNESS,SAFETY before you start the work in the work area.
Subtask 27-81-51-010-052-A
B. Get Access
   (1) Put an ACCESS PLATFORM 4M (13 FT) in position below the applicable zone access panel.
   (2) Remove the applicable access panel (Ref. AMM TASK 57-41-37-000-006):
  • For the solenoid valve (1) on 35CV, remove 522SB
  • For the solenoid valve (1) on 36CV, remove 622SB.
Subtask 27-81-51-860-053-A
C. Aircraft Maintenance Configuration
   (1) Make sure that the slats are fully retracted (Ref. AMM TASK 27-80-00-866-005).
   (2) In the cockpit, on panel 114VU, install the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS on the flap/slat control lever.
   (3) Make sure that the Blue and the Green hydraulic systems are depressurized (Ref. AMM TASK 29-10-00-864-003) and (Ref. AMM TASK 29-10-00-864-001).
   (4) Depressurize the Blue and the Green hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-001).
   (5) Remove the safety collar from circuit breakers 9CV and 11CV.
Subtask 27-81-51-865-053-A
D. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUFLIGHT CONTROLS/WTB/SLT/SYS211CVP19
122VUFLIGHT CONTROLS/WTB/SLT/SYS19CVS06
4. Procedure
Subtask 27-81-51-020-051-B
A. Removal of the Solenoid Valve from the Slat Wing-Tip Brake
   (1) Remove the screws (9).
   (2) Use one of the screws (9) in the hole (8) to help you to remove the solenoid valve (1).
   (3) Remove the screw (9) from the hole (8).
   (4) Remove and discard the O-rings (2), (4), (6) and (7) and the back-up rings (3) and (5) from the solenoid valve (1).
   (5) Put the PLUG-BLANKING in each disconnected line end.
[Rev.10 from 2021] 2026.03.31 23:56:31 UTC
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