(a) Remove the nuts (18), the washers (17), the bolt assemblies (15) and the rollers (16).

 (6)
 For the Nos. 2, 3 and 4 flap carriage bottom rollers:

 (a)
 Remove the cotter pins (20) from the nuts (19). Discard the cotter pins (20).

 (b)
 Remove the nuts (19), the washers (21), the bolts (24) and the rollers (22).

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 B. Preparation for Inspection
 (1) Clean the parts:
 (a) Use a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026) to clean:
 -
the No. 1 flap carriage rollers (2) and (11)

 -
the Nos. 2, 3 and 4 flap carriage rollers (16), (22) and (26).

 Subtask 27-54-46-220-050-A
R C. Detailed Inspection of the Flap Carriage Rollers
 (1)
 Do an inspection of these items for corrosion, damage and the correct condition:

 -
the No. 1 flap carriage rollers (2) and (11)

 -
the Nos. 2, 3 and 4 flap carriage rollers (16), (22) and (26).

 (2)
 Do an inspection of the flap carriage rollers (2), (11), (16), (22) and (26) for in-service wear:

 (a)
 Inspect the outer diameter (OD) of the roller outer case (31) for wear marks. You must replace the applicable roller(s) if the Dim 'Y' is more than 0.1 mm (0.0039 in.).

 (b)
 Hold the roller outer case (31) and move the inner case (32) from left to right. Measure the total lateral play (Dim 'X'). You must replace the applicable roller(s) if the total lateral play Dim 'X' is more than 0.13 mm (0.0051 in.).

 (c)
 Measure the OD of the roller(s) (Dim 'Z'). You must replace the applicable roller(s) if the Dim 'Z' is less than the applicable dimension shown in Table 1.

 -------------------------------------------------------------------------------| TRACK No. | MINIMUM BEARING OD (DIM 'Z') | |-----------------------------------------------------------------------------| | TRACK 1 | | |-----------------------------------------------------------------------------| | SIDE ROLLER (2) | 44.352 mm (1.746 in.) | | CENTER ROLLER (11) | 44.352 mm (1.746 in.) | |-----------------------------------------------------------------------------| | TRACK 2 | | |-----------------------------------------------------------------------------| R | TOP ROLLER (26) | 33.312 mm (1.312 in.) |
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 -------------------------------------------------------------------------------
R R R R R R R R  | TRACK No. | MINIMUM BEARING OD (DIM 'Z') | |-----------------------------------------------------------------------------| | SIDE ROLLER (16) | 33.312 mm (1.312 in.) | | BOTTOM ROLLER (22) | 44.425 mm (1.749 in.) | |-----------------------------------------------------------------------------| | TRACK 3 | | |-----------------------------------------------------------------------------| | TOP ROLLER (26) | 33.312 mm (1.312 in.) | | SIDE ROLLER (16) | 33.312 mm (1.312 in.) | | BOTTOM ROLLER (22) | 44.425 mm (1.749 in.) | |-----------------------------------------------------------------------------| | TRACK 4 | | |-----------------------------------------------------------------------------| | TOP ROLLER (26) | 33.312 mm (1.312 in.) | | SIDE ROLLER (16) | 33.312 mm (1.312 in.) | | BOTTOM ROLLER (22) | 38.070 mm (1.499 in.) | -------------------------------------------------------------------------------
TABLE 1
 Subtask 27-54-46-410-054-A
 D. Installation of Components After Inspection
 (1) For the No. 1 flap carriage side rollers:
 (a) Install the bolts (1), the bolt assemblies (14) and the rollers (2) on the flap carriage (13).
 (b) Install the new lock plates (3), the washers (4) and the nuts (5).
 (c) TORQUE the nuts (5) to between 4.0 and 4.6 m.daN (29.49 and 33.92 lbf.ft) and safety to the lock plates (3) with lockwire (Ref. TASK 20-11-11-991-001).
 (d) Install the greasers (6) on the bolts (1). Make sure that the greasers point in the correct direction.
 (2) For the No. 1 flap carriage center rollers:
 (a) Install the washers (10), the rollers (11) and the bolt assemblies (12) on the flap carriage (13).
 (b) Apply a thin layer of LUBRICANTS (Material No. 06-011) to the threads of the nuts (7). 

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 (c)
 Install the new lock plates (9), the washers (8) and the nuts (7).

 (d)
 TORQUE the nuts (7) to between 4.0 and 4.6 m.daN (29.49 and 33.92 lbf.ft).
　
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