Installation of the Side-Rollers - Slat Tracks 1 thru 4

TASK 27-84-61-400-003-A
Installation of the Side-Rollers - Slat Tracks 1 thru 4

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	1	MICROMETER - EXTERNAL
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
98D27804021000	1	GAUGE-SLAT TRACK SETTING

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBD1)	Synthetic Oil base Grease-General Purpose Lithium Thickened -
(Material No.03HBD9)	Synthetic Ester base Grease-General Purpose Low Temp -
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06AEB2)	Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.12ACC1)	Corrosion Preventive Compound-Heavy Duty Soft Film -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
521AB, 521BB, 521CB, 521EB, 621AB, 621BB, 621CB, 621EB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-869-002-A	Table of the Maximum Permitted Resistance-Values
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 27-84-48-000-001-A	Removal of the Type A Actuators
TASK 27-84-48-400-001-A	Installation of the Type A Actuators
TASK 27-84-61-000-001-A	Removal of the Slat Tracks 1 thru 4
TASK 27-84-61-400-004-A	Installation of the Slat Tracks 1 thru 4
TASK 27-84-63-400-002-A	Installation of the No. 1 Slat
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
TASK 57-41-37-000-005-A	Removal of the NACA Duct Panel
TASK 57-41-37-400-002-A	Installation of the Pressure Relief Panels
TASK 57-41-37-400-005-A	Installation of the NACA Duct Panel
Side Roller and Vertical Roller - Location and Detail ** ON A/C NOT FOR ALL
Side Roller and Vertical Roller - Location and Detail ** ON A/C NOT FOR ALL
Slat-Track Rigging Tools

3. Job Set-up
Subtask 27-84-61-941-057-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) Make sure that the WARNING NOTICE(S) are in position.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is installed.

Subtask 27-84-61-860-055-A

B. Aircraft Maintenance Configuration
(1) Make sure that the applicable access panels have been removed:

for the left wing, 521AB 521BB 521CB 521EB
for the right wing, 621AB 621BB 621CB 621EB

(Ref. AMM TASK 57-41-37-000-004) and (Ref. AMM TASK 57-41-37-000-005).
(2) For track 2 and 3, make sure that the applicable actuators have been removed (Ref. AMM TASK 27-84-48-000-001).
(3) Make sure that the applicable track has been removed (Ref. AMM TASK 27-84-61-000-001).

Subtask 27-84-61-865-062-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/WTB/SLT/SYS2	11CV	P19
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
122VU	FLIGHT CONTROLS/WTB/SLT/SYS1	9CV	S06

4. Procedure
Subtask 27-84-61-820-061-A

A. Preparation for Installation

Side Roller and Vertical Roller - Location and Detail ** ON A/C NOT FOR ALL

Slat-Track Rigging Tools

(1) Use the 98D27804021000 GAUGE-SLAT TRACK SETTING to set the track datum:

NOTE: This procedure is necessary when all the side rollers are removed.

(a) Install the applicable setting track (44). (For the track 4, install the slip gage (43) between the setting track (44) and the rubbing block on the datum rib).

NOTE: The slip gage will give the necessary clearance of between 1.25 mm (0.0492 in.) and 1.45 mm (0.0571 in.) at the track 4 forward side-roller.

(b) Install and lock the two clamp assemblies (45) at the location of the non-datum side-rollers:

turn the thumb screws (46) equally until they stop.

(c) Install the gage assembly (47) with the washers (27) and the bolts (26) at the the location of the aft datum side-roller.
(d) Turn the torque screw (49) on the gage assembly (47) until it stops and lock it in position with the thumb screw (48).
(e) Do the procedure again for the forward datum side-roller.
(2) Calculate the thickness of the datum side-roller shims (28):

NOTE: This procedure is necessary when all the side rollers are removed.

(a) Remove the bolts (26), the washers (27) and the gage assembly (47) from the location of the aft datum side-roller.
(b) Set the micrometer (51) on the gage block (53) to zero.
(c) Install the gage assembly (47) on the gage block (53) and lock it in position with the clamps (50).
(d) Move the micrometer (51) in the gage block (53) until it touches the gage assembly (47) and lock it in this position with the screw (52).
(e) Remove the gage assembly (47) from the gage block (53).
(f) Install the serviceable datum side-roller (25) on the gage block (53) and lock it in position with the clamps (50).
(g) Adjust the micrometer (51) until it touches the datum side-roller (25). Make a record of the dimension shown on the micrometer (51).
(h) Use an MICROMETER - EXTERNAL and assemble the shims (28), until their thickness agrees with the dimension you have just calculated.
(i) Remove the aft datum side-roller (25) from the gage block (53).
(j) Keep the aft datum side-roller (25) and its shims (28) together.
(k) Do the procedure again for the forward datum side-roller.
(l) Remove the clamp assembly (43) and the setting track (44).
(m) For track 1, prepare the aft datum side-roller (25) for electrical bonding (Ref. AMM TASK 20-28-00-912-802).

Subtask 27-84-61-420-068-C

B. Installation of the Datum Side-Rollers

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 tracks 2, 3 and 4 apply a thin layer of Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to the interface of the aft datum side-rollers (25) and the shims (27).
(2) 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 (26).
(3) Put the necessary thickness of shims (27) and the aft datum side-roller (25) in position.
(4) Install the aft datum side-roller (25) and the shims (27) and the bolts (26).
(5) Safety the bolts (26) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(6) Do the procedure again for the front datum side-roller (25).
(7) If removed, install the applicable slat track (2) (Ref. AMM TASK 27-84-61-400-004).
(8) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the bolts (26) and the shims (27).

Subtask 27-84-61-420-062-B

C. Installation of One Side-Roller or a Pair on the Same Side
(1) For track 1, prepare the side-roller(s) (25) for electrical bonding (Ref. AMM TASK 20-28-00-912-802).
(2) 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 (26).
(3) Put the shims (27) and the side-roller(s) (25) in position.
(4) Install the bolts (26).

Subtask 27-84-61-820-073-C

D. Adjustment and Check of the Side Rollers

(1) Move the applicable track (1) through its full range of travel and make sure that:

for tracks 1, 2 and 3, the side-roller(s) (25) touch the track (1) at some point of its travel
the points that touch do not stop the smooth travel of the track (1)
for track 4, the forward side-roller(s) (25) have a clearance (DIM. X) of between 1.25 mm (0.0492 in.) and 1.45 mm (0.0571 in.) at their nearest point to the track (1).

(2) Adjust the side-rollers:
(a) Remove the bolts (26), the side-roller(s) (25) and the shims (27).
(b) Adjust the thickness of the shims (27) as follows:

to reduce the friction, increase thickness of the shims (27) as necessary
to make the side-roller(s) (25) touch the track (1) at some point of its travel, decrease the thickness of the shims (27) as necessary.

(c) Install the side-roller(s) (25) and the shims (27) with the bolts (26).
(d) Do the procedure again, as necessary, until the adjustment of the side-roller(s) (25) is correct.
(3) Safety the bolts (26) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(4) For track 1, do the electrical bonding test (Ref. AMM TASK 20-28-00-869-002).
(5) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the bolts (26) and the shims (27).

5. Close-up
Subtask 27-84-61-410-057-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) For the tracks 2 and 3, install the actuators (Ref. AMM TASK 27-84-48-400-001).
(3) Install the Slat 1 (Ref. AMM TASK 27-84-63-400-002).
(4) Install the applicable access panels:

for the left wing, install the panels 521AB 521BB 521CB 521EB
for the right wing, install the panels 621AB 621BB 621CB 621EB

(Ref. AMM TASK 57-41-37-400-002) and (Ref. AMM TASK 57-41-37-400-005).

Subtask 27-84-61-942-055-A

B. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(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 23:57:57 UTC