TM 9-2320-260-34-2
16-9. REAR WINCH LEVEL WIND MAINTENANCE (Contd)
c. Cleaning and Inspection
1.
For general cleaning instructions, refer to para. 2-8.
2.
For general inspection instructions, refer to para. 2-9.
3. Inspect pivot frame (1), bearing (5), shaft (7), two thrust washers (8), spacers (9), and sheave (10) for
nicks, burrs, scoring, cracks, breaks, looseness, and excessive wear. Refer to table 16-8, Rear Winch
Level Wind Wear Limits, for measurements. Replace part(s) if damaged or worn.
4.
Inspect race (12) and bearing (11) for nicks, burrs, scoring, cracks, and breaks. Replace race (12) and
bearing (11) if damaged.
5. Inspect pin (6) for nicks, burrs, scoring, cracks, and breaks. Replace pin (6) if damaged.
Table 16-8. Rear Winch Level Wind Wear Limits.
WEAR LIMITS/TOLERANCES
ITEM
lTEM/POINT OF MEASUREMENT
NO.
INCHES
MILLIMETERS
1
Pivot frame
2
Sheave shaft bore (2 places) inner diameter
maximum
2.747
69.77
3
2.812
71.42
Race surface outer diameter - minimum
5
Bearing bore inner diameter maximum
1.3747
34.917
4
Pivot frame bearing outer diameter minimum
1.3745
34.912
7
Sheave shaft outer diameter minimum
2.7490
69.825
8
Sheave thrust washer thickness minimum
0.0615
1.562
9
Spacer
Edge thickness minimum
0.087
2.21
Body thickness minimum
0.178
4.52
10
Sheave
Bearing bore inner diameter maximum
4.2496
107.940
Hub width minimum length
2.235
56.77
11
Sheave bearing outer diameter - minimum
4.2492
107.930
16-62
