W DOC AIRBUS | AMM A320F

Removal of the Flap Wing-Tip Brake

TASK 27-51-51-000-001-A
Removal of the Flap Wing-Tip Brake

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: OBEY THE HYDRAULIC SAFETY PROCEDURES.
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.
ZONE: 575
ZONE: 675
FIN: 33CV
FIN: 34CV
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 3M (10 FT)
No specific
AR
CAP - BLANKING
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
98D27504030001
2
LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT
98D27604000000
1
COLLAR-SAFETY, SPOILER
98D27604004000
1
COLLAR SAFETY SPOILER
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
98L12003001000
AR
HARNESS,SAFETY
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
575
AFT OUTBD SE OF WING AND TE FIXED STRUCT
675
AFT OUTBD SE OF WING AND TE FIXED STRUCT
FOR [33CV] (WING TIP BRAKE)
575DB, 575EB
FOR [34CV] (WING TIP BRAKE)
675DB, 675EB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 27-50-00-400-003-A
Installation of the Lock-Torque Shaft - Flaps and Slats (98D27504030001)
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 27-54-45-000-008-A
Removal of the Torque Shafts
TASK 27-54-45-000-011-A
Removal of the Torque Shafts
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 29-10-00-864-002-A
Depressurize the Yellow 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
F Flap Wing-Tip Brake 33CV(34CV)
FOR [33CV] (WING TIP BRAKE)
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)
FOR [34CV] (WING TIP BRAKE)
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)
3. Job Set-up
Subtask 27-51-51-941-059-A
A. Safety Precautions
   (1) Put the SAFETY BARRIER(S) in position.
   (2) In the cockpit, put WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
   (3) Put a WARNING NOTICE(S) in position to tell persons not to operate the flight controls.
   (4) Put on 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 work in the work area.
Subtask 27-51-51-860-050-A
B. Aircraft Maintenance Configuration
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.
   (1) Fully extend the flaps (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) Depressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002) and (Ref. AMM TASK 29-10-00-864-003).
   (4) Depressurize the reservoirs of the Green, Yellow and Blue hydraulic systems.
(Ref. AMM TASK 29-14-00-614-001).
   (5) Remove the safety collar from the circuit breakers 10CV and 12CV.
Subtask 27-51-51-865-050-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B08
49VUFLIGHT CONTROLS/FLP/CTL AND MONG/SYS16CVB07
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B03
49VUFLIGHT CONTROLS/FLP/CTL AND MONG/SYS16CVB02
** ON A/C ALL
105VUFLT CTL/SEC1/STBY SPLY22CEB01
121VUFLIGHT CONTROLS/WTB/FLP/SYS212CVP20
121VUFLIGHT CONTROLS/FLP/CTL AND/MONG/SYS28CVQ21
121VUFLIGHT CONTROLS/SEC3/SPLY21CE3Q19
121VUFLIGHT CONTROLS/SEC2/SPLY21CE2Q18
122VUFLIGHT CONTROLS/WTB/FLP/SYS110CVS07
Subtask 27-51-51-010-051-A
D. Get Access
   (1) Put the ACCESS PLATFORM 3M (10 FT) in position:
  • For the left wing, below zone 580
  • For the right wing, below zone 680.
   (2) Remove the access panels:
     (a) FOR [33CV] (WING TIP BRAKE)
remove 575DB 575EB (Ref. AMM TASK 57-51-37-000-004).
     (b) FOR [34CV] (WING TIP BRAKE)
remove 675DB 675EB (Ref. AMM TASK 57-51-37-000-004).
   (3) Put the No. 3 spoiler into the 'M' (Maintenance) position (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.
Subtask 27-51-51-480-050-A
E. Installation of Support Equipment
   (1) Install the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT at these positions (Ref. AMM TASK 27-50-00-400-003):
  • For 33CV, on the torque shafts 6226CM and 6230CM
  • For 34CV, on the torque shafts 6276CM and 6280CM.
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 27-51-51-020-052-B
A. Removal of the Wing-Tip Brake (WTB)
   (1) Disconnect the electrical connectors (7) and (10).
   (2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (3) Disconnect the hydraulic lines (13), (16), (29) and (34).
   (4) Put the PLUG-BLANKING in each disconnected line end.
   (5) Remove the nut (6), the washer (5), the bolt (4) and the bonding strap (2) from the T-piece (3).
   (6) At the outboard side of the wing-tip brake (1), remove the nuts (27) and the bolts (26).
   (7) Move the torque shaft:
CAUTION: DO NOT MOVE THE TORQUE SHAFT TOO FAR SIDEWAYS. IT WILL CAUSE DAMAGE TO THE UNIVERSAL JOINT.
     (a) Move the flanges of the torque shaft apart and remove the universal joint (28) from the wing-tip brake (1). If the flanges will not move apart sufficiently, remove the middle part of the torque shaft (Ref. AMM TASK 27-54-45-000-008) (Ref. AMM TASK 27-54-45-000-011).
   (8) Remove and discard the cotter pin (22).
   (9) Remove the nut (21), the washer (20) and the bolt (18).
   (10) Hold the wing-tip brake (1) and remove the nuts (17).
   (11) Remove the wing-tip brake (1).
   (12) If you are to install a new wing-tip brake (1):
     (a) Retain these items:
  • The adapters (12), (15), (30) and (35)
  • The nuts (23), the washers (24) and (25) and the brake support (19)
  • The T-piece (3).
   (13) Discard the related O-rings (11), (14), (31) and (36).
[Rev.10 from 2021] 2026.04.01 07:00:50 UTC
"Aviabrain" 2025