TM 9-2320-260-34-2
16-3. FRONT WINCH LEVEL WIND MAINTENANCE (Contd)
7. Inspect twenty-six ball bearings (17), trolley frame (8), outer race (16), and inner race (18) for pits,
chips, cracks, or scoring. Replace part(s) if pitted, chipped, cracked, or scored.
8. Inspect four thrust washers (4), axle (5), trolley frame bores (9) and (10), two thrust washers (11)
and (15), sheave (12), sleeve (14), bearing (13), bushing (19), and bearing (20) for cracks, breaks,
scoring, pits, chips, and excessive wear. Refer to table 16-3, Level Wind Parts Wear Limits, for
measurements. Replace part(s) if damaged or worn.
Table 16-3. Level Wind Parts Wear Limits.
WEAR LIMITS/TOLERANCES
ITEM
ITEM/POINT OF MEASUREMENT
NO.
INCHES
MILLIMETERS
4
Thrust washer thickness minimum
1.47
0.058
Axle (4 places) - outer diameter minimum
5
1.2495
31.737
Bushing bore inner diameter maximum
1.2505
31.763
9
Bushing bore inner diameter maximum
10
3.251
82.58
1.562
11,15
Sheave thrust washer thickness minimum
0.0615
Sheave bore inner diameter maximum
12
2.5005
63.513
Bearing
13
Inner diameter maximum
2.1270
54.026
2.4995
63.487
Outer diameter - minimum
14
Sleeve
Inner diameter
maximum
1.503
38.18
2.1244
53.960
Outer diameter
minimum
Bushing
19
76.33
Inner diameter
maximum
3.005
Outer diameter
minimum
3.252
82.60
Bearing
20
1.0014
25.436
Inner diameter
maximum
1.2495
31.737
Outer diameter
minimum
16-23
