Installation of the Slat-Track Pinion Assembly

TASK 27-84-68-400-001-A
Installation of the Slat-Track Pinion Assembly

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

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.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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	SAFETY BARRIER(S)
No specific	AR	STRAP - SAFETY
No specific	AR	WARNING NOTICE(S)
98D27803500001	1	LOCKING TOOL ZERO POS
98D27803500002	1	LOCKING TOOL ZERO POS
98D27804006000	1	TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 2 AND 3)
98D27804007000	1	TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 5 TO 12)
98D27804019000	1	BEAM SUPPORT-SLATS 3, 4 AND 5

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBB1)	Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.03GBC1)	Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. -
(Material No.03GBD1)	Synthetic Oil base Grease-General Purpose Lithium Thickened -
(Material No.03HBD9)	Synthetic Ester base Grease-General Purpose Low Temp -
(Material No.03PBD1)	Lubricant-Anti Seize Nickel & Graphite -
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06AEB2)	Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ACC1)	Corrosion Preventive Compound-Heavy Duty Soft Film -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 27-84-00-710-001-A	Operational Test of the Slat System
TASK 27-84-48-400-001-A	Installation of the Type A Actuators
TASK 27-84-49-400-002-A	Installation of the Type B Actuators
TASK 12-22-00-00	LUBRICATION - DESCRIPTION AND OPERATION
Slat-Track Pinion Assembly - Location and Detail

3. Job Set-up
Subtask 27-84-68-941-056-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the slat controls.

Subtask 27-84-68-860-051-A

B. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 4M (13 FT) is below the applicable slat.
(2) Make sure that the slats are retracted (Ref. AMM TASK 27-80-00-866-005).
(3) Make sure that the applicable slat is held safely in position:

for slats 1 and 2, held in position with a STRAP - SAFETY
for slats 3, 4 and 5, held in position with the 98D27804019000 BEAM SUPPORT-SLATS 3, 4 AND 5.

(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is installed on the flap/slat control-lever.

Subtask 27-84-68-865-051-A

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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

4. Procedure
Subtask 27-84-68-420-054-B

A. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) For slat tracks 2, 3, 5, 6, 7, 8, 9 and 12:
(a) Apply a thin layer of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) to the interface of the actuator housing (2) and the rib.

NOTE: For the lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).

(b) Apply Lubricant-Anti Seize Nickel & Graphite - (Material No.03PBD1) to the internal splines of the pinion assembly (6) and the interface of:

The pinion assembly (6) and the bearing (5).

(c) Use Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean:

The pinion assembly (6)
The component interface and/or the adjacent area.

(d) Install the bearing (5) on the pinion assembly (6) as follows:
1 Align the pinion pin on the pinion assembly (6) with the fork on the bearing (5).
2 Push the pinion assembly (6) and the bearing (5) together. Make sure that the pinion pin engages with the fork on the bearing (5).
(e) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) or Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) to the shanks of the bolts (1) and (7).
(5) For slat tracks 10 and 11:
(a) Apply a thin layer of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) to the interface of the actuator housing (21) and the rib.

NOTE: For the lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).

(b) Apply Lubricant-Anti Seize Nickel & Graphite - (Material No.03PBD1) to the internal splines of the pinion assembly (23) and the interface of:

The pinion assembly (23) and the bearing (22).

(c) Use Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean:

The pinion assembly (23)
The component interface and/or the adjacent area.

(d) Install the bearing (22) on the pinion assembly (23) as follows:
1 Align the pinion pin on the pinion assembly (23) with the fork on the bearing (22).
2 Push the pinion assembly (23) and the bearing (22) together. Make sure that the pinion pin engages with the fork on the bearing (22).
(e) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) or Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) to the shanks of the bolts (19) and (24).

Subtask 27-84-68-420-052-B

B. Installation of the Slat-Track Pinion-Assembly
(1) For slat tracks 2, 3, 5, 6, 7, 8, 9 and 12:
(a) Put the pinion assembly (6), together with the bearing (5), in position between the track ribs. Make sure that:

the pinion assembly (6) engages with the slat track
the greasers are aligned so that persons can get access to them.

NOTE: It is recommended that a used pinion assembly (6) and bearing (5) are installed in their initial position. A new pinion assembly (6) can be installed with the bearing (5) on the inboard or outboard side.

(b) Install the end cover (8) with the bolts (7). Tighten the bolts (7) with your hand.
(c) Install the actuator housing (2) with the bolts (1). Tighten the bolts (1) with your hand.
(d) To align the pinion assembly (6) correctly:

for slat track 2 and 3, install the 98D27804006000 TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 2 AND 3) on the flange of the actuator housing (2)
for slat tracks 5, 6, 7, 8, 9 and 12, install the 98D27804007000 TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 5 TO 12) on the flange of the actuator housing (2).

(e) Tighten the bolts (1) and (7) in a diagonal sequence.
(f) Remove the 98D27804006000 TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 2 AND 3) and/or the 98D27804007000 TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 5 TO 12).
(2) For slat tracks 10 and 11:
(a) Put the pinion assembly (23), together with the bearing (22), in position between the track ribs. Make sure that:

the pinion assembly (23) engages with the slat track
the greasers are aligned so that persons can get access to them.

NOTE: It is recommended that a used pinion assembly (23) and bearing (22) are installed in their initial position. A new pinion assembly (23) can be installed with the bearing (22) on the inboard or outboard side.

(b) Install the end cover (26) with the bolts (24) and the washers (25). Tighten the bolts (24) with your hand.
(c) Install the actuator housing (21) with the bolts (19) and the washers (20). Tighten the bolts (19) with your hand.
(d) To align the pinion assembly (23) correctly, install the 98D27804007000 TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 5 TO 12) on the flange of the actuator housing (21).
(e) Tighten the bolts (19) and (24) in a diagonal sequence.
(f) Remove the 98D27804007000 TOOL-ALIGNMENT AND LOCKING (SLAT TRACKS 5 TO 12).

Subtask 27-84-68-420-053-D

C. Continue with the Installation Procedure

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.

(1) For slat tracks 2, 3, 5, 6, 7, 8, 9 and 12:
(a) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) on and around the bolts (1) and (7), and the related bushes and nutplates.
(b) Lubricate the greasers on the pinion assembly (6) with Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) .
(c) For slat track 5, 6 and 8 only:
1 Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) or Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) to the shanks of the bolts (3).
2 Install the bracket (4) and the bolts (3).
3 Tighten the bolts (3).
4 Safety the bolts (3) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
5 Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the bolts (3).
(2) For slat tracks 10 and 11:
(a) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) on and around the:

Bolts (19) and (24)
Washers (20) and (25)
Related nutplates.

(b) Lubricate the greasers on the pinion assembly (23) with Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) .
(3) Remove the STRAP - SAFETY from the applicable slats 1 and 2.
(4) Remove the 98D27804019000 BEAM SUPPORT-SLATS 3, 4 AND 5 from the applicable slat.
(5) Install the applicable actuator (Ref. AMM TASK 27-84-48-400-001) or (Ref. AMM TASK 27-84-49-400-002) for:

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

(6) Remove the access platform(s).

Subtask 27-84-68-865-052-A

D. Remove the safety clip(s) and the tag(s) and close 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 27-84-68-710-050-A

E. Test
(1) Do an operational test of the slat system (Ref. AMM TASK 27-84-00-710-001).

5. Close-up
Subtask 27-84-68-942-050-A

A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.03.31 23:58:17 UTC