Subtask 27-84-61-280-051
 A. Pre Installation Checks NOTE : When slat tracks 1 and 4 are made it can be necessary to install
____ spacers in the main channel. This is to get the correct tolerance. The number of spacers installed in a track can be between zero and four.
 (1)
 Do a friction check on the applicable pinion(s) with a spring gage (Ref. TASK 27-84-68-400-001).

 (2)
 For track 1, prepare the track for electrical bonding (Ref. TASK 20-28-00-912-001).

 Subtask 27-84-61-420-063
 B. Preparation for Installation
 (1)
 Clean the component interface and/or the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).

 (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 interface and/or the adjacent area. Subtask 27-84-61-420-067
 C. Installation of the Slat Tracks 1 thru 4 R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 402/TASK 27-84-61-991-003-A)
 **ON A/C 301-399,

 (Ref. Fig. 402A/TASK 27-84-61-991-003)
 **ON A/C ALL

 (Ref. Fig. 403/TASK 27-84-61-991-004) WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL

_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 (1) Put the TOOL-BACKSTOP SLAT (TRACKS 1, 2, 3, AND 4) (98D27804014000)
 (2) through the guide (3) on the applicable track (1): - on the LH wing, install the TOOL-BACKSTOP SLAT (2) on the inboard side of the track
 - on the RH wing, install the TOOL-BACKSTOP SLAT (2) on the outboard side of the track.
 (2)
 Push and hold the rear stop (4) away from its locked position. Install the track (1) into its correct location.

 (3)
 Release the rear stop (4) and make sure that it is correctly engaged in its locked position.

 (4)
 Remove the TOOL-BACKSTOP SLAT (TRACKS 1, 2, 3, AND 4) (2) from the track (1).

 (5)
 For track 1, do the electrical bonding test (Ref. TASK 20-28-00-869-002).

 (6)
 Do a check of the position of the side-rollers at the track:

 (a) Move the applicable track (1) through its full range of travel and make sure that:
 -for tracks 1, 2 and 3, the side-rollers (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-rollers (25) have a clearance (DIM. X) of between 1.25 mm (0.0492 in.) and 1.45 mm (0.0570 in.) at their nearest point to the track (1).

 (7)
 If necessary, adjust the non-datum side-rollers (25):

 NOTE : The non-datum side-rollers are those installed on the:
____
 - outboard rib for the left wing

 -inboard rib for the right wing.
 1EFF : ALL 1 27-84-61Page 413 1 1 May 01/04R 1 1 1CES 1

 (a)
 Remove and discard the lockwire from the bolts (26).

 (b)
 Remove the bolts (26), the side-roller(s) (25) and the shims (27).

 (c)
 Adjust the thickness of the shims (27):

 -
to reduce the friction, increase the thickness of the shims

 (27) as necessary

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

 (d)
 On the track 1, prepare the side-rollers (25) for electrical bonding (Ref. TASK 20-28-00-912-004).

 (e)
 On the tracks 2, 3 and 4, apply a thin layer of COMMON GREASE (Material No. 04-024) to the side-rollers (25) and the shims (27).

 (f)
 Apply a layer of SEALANTS (Material No. 09-018) or SEALANTS (Material No. 09-019) to the shanks of the bolts (26).

 (g)
 Put the shims (27) and the side-rollers (25) in position and install them with the bolts (26).

 (h)
 Do the procedure again, as necessary, until the adjustment of the side-roller(s) (25) is correct.

 (8)
 Safety the bolts (26) with MISCELLANEOUS (Material No. 19-010).

 (9)
 Apply a layer of STORAGE PRESERVATION (Material No. 15-007) to the bolts (26) and the shims (27).