Removal of the Slat Wing-Tip Brake

TASK 27-81-51-000-001-A
Removal of the Slat 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: 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
FIN: 35CV
FIN: 36CV

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	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
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
FOR [35CV] (WING TIP BRAKE)
522SB
FOR [36CV] (WING TIP BRAKE)
622SB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-50-00-400-003-A	Installation of the Lock-Torque Shaft - Flaps and Slats (98D27504030001)
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 27-84-45-000-006-A	Removal of the Torque Shafts
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
Slat Wing-Tip Brake

3. Job Set-up
Subtask 27-81-51-941-052-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 operate the slat controls.
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
(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 27-81-51-010-050-A

B. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT) in position below the applicable access panel.
(2) Remove the applicable access panel (Ref. AMM TASK 57-41-37-000-006):
(a) FOR [35CV] (WING TIP BRAKE)
remove 522SB
(b) FOR [36CV] (WING TIP BRAKE)
remove 622SB.

Subtask 27-81-51-860-052-A

C. 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.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(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) Install the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT on the inboard and the outboard torque shafts (Ref. AMM TASK 27-50-00-400-003).
(4) 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).
(5) Depressurize the Blue and the Green hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-001).
(6) Remove the safety collar from circuit breakers 9CV and 11CV.

Subtask 27-81-51-865-050-A

D. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	FLIGHT CONTROLS/WTB/SLT/SYS2	11CV	P19
122VU	FLIGHT CONTROLS/WTB/SLT/SYS1	9CV	S06

4. Procedure
Subtask 27-81-51-020-052-B

A. Removal of the Slat Wing-Tip Brake
(1) Disconnect the electrical connectors (1) and (5).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Disconnect the hydraulic lines (8), (9), (20) and (21).
(4) Put the PLUG-BLANKING in each disconnected line end.
(5) Remove the nut (27), washer (26), bolt (24) and bonding strap (25) from the T-piece.
(6) At the inboard side of the wing tip brake (2), remove the nuts (14) and bolts (15):

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 from the wing tip brake (2). If the flanges will not move apart suffiently, remove the middle part of the torque shaft (Ref. AMM TASK 27-84-45-000-006):
1 For the left wing:

FIN 6042CM (inboard of the wing tip brake)
FIN 6044CM (outboard of the wing tip brake).

2 For the right wing:

FIN 6092CM (inboard of the wing tip brake)
FIN 6094CM (outboard of the wing tip brake).

(7) Hold the wing tip brake (2) and remove the nuts (12).
(8) Remove the wing tip brake (2).
(9) If you install a new wing tip brake (2):
(a) Retain the following items:

The adapters (7), (10), (19) and (22).
The T-piece and its attachment bolts.

(b) Discard the related O-rings (6), (11), (18) and (23).

[Rev.10 from 2021] 2026.04.01 07:07:37 UTC