Removal of the Slat-Track Pinion Assembly

TASK 27-84-68-000-001-A
Removal of the Slat-Track Pinion Assembly

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.

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)-ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	STRAP - SAFETY
No specific	AR	WARNING NOTICE(S)
98D27803500001	1	LOCKING TOOL ZERO POS
98D27803500002	1	LOCKING TOOL ZERO POS
98D27804019000	1	BEAM SUPPORT-SLATS 3, 4 AND 5

B. Referenced Information

REFERENCE	DESIGNATION
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 27-84-48-000-001-A	Removal of the Type A Actuators
TASK 27-84-49-000-002-A	Removal of the Type B Actuators
Slat-Track Pinion Assembly - Location and Detail

3. Job Set-up
Subtask 27-84-68-941-055-A

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Put a WARNING NOTICE(S) in position to tell persons not to operate the slat controls.

Subtask 27-84-68-860-050-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) Make sure that the slats are retracted (Ref. AMM TASK 27-80-00-866-005).
(2) Install the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS on the flap/slat control-lever.

Subtask 27-84-68-481-050-A

C. Installation of Safety Devices
(1) Install the applicable safety devices:

for slats 1 and 2, attach a STRAP - SAFETY to the ditching lugs on the wing
for slats 3, 4 and 5, install the 98D27804019000 BEAM SUPPORT-SLATS 3, 4 AND 5.

Subtask 27-84-68-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 27-84-68-941-054-A

E. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE below the applicable slat.

4. Procedure
Subtask 27-84-68-020-050-B

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

A. Removal of the Slat-Track Pinion Assembly

NOTE: Pinion assemblies are not installed in slat tracks 1 and 4.

(1) Remove the applicable actuator (Ref. AMM TASK 27-84-48-000-001) or (Ref. AMM TASK 27-84-49-000-002) for:

track 2 pinion, remove 6013CM (6063CM)
track 3 pinion, remove 6015CM (6065CM)
track 5 pinion, remove 6027CM (6077CM)
track 6 pinion, remove 6029CM (6079CM)
track 7 pinion, remove 6033CM (6083CM)
track 8 pinion, remove 6035CM (6085CM)
track 9 pinion, remove 6037CM (6087CM)
track 10 pinion, remove 6039CM (6089CM)
track 11 pinion, remove 6041CM (6091CM)
track 12 pinion, remove 6045CM (6095CM).

(2) For slat tracks 2, 3, 5, 6, 7, 8, 9 and 12:
(a) For slat track 5, 6 and 8 only:
1 Remove and discard the lockwire from the bolts (3).
2 Remove the bolts (3) and the bracket (4).
(b) Remove the bolts (1) and the actuator housing (2).
(c) Remove the bolts (7) and the end cover (8).
(d) Remove together, the bearing (5) and the pinion assembly (6).
(e) Remove the bearing (5) from the pinion assembly (6).

NOTE: The pinion assembly (6) and bearing (5) can be installed with the bearing on the inboard or outboard side. Record the initial position of the pinion assembly (6) before removal.

(3) For slat tracks 10 and 11:
(a) Remove the bolts (19), the washers (20) and the actuator housing (21).
(b) Remove the bolts (24), the washers (25) and the end cover (26).
(c) Remove together, the bearing (22) and the pinion assembly (23).
(d) Remove the bearing (22) from the pinion assembly (23).

NOTE: The pinion assembly (23) and bearing (22) can be installed with the bearing on the inboard or outboard side. Record the initial position of the pinion assembly (23) before removal.

[Rev.10 from 2021] 2026.03.31 23:58:16 UTC