TM 9-2320-260-34-2
16-21. BOOM REPAIR (M816) (Contd)
b. Cleaning, Inspection, and Repair
1.
For general cleaning instructions, refer to para. 2-8.
2. For general inspection instructions, refer to para. 2-9.
3. For general repair instructions, refer to para. 2-10.
4. Inspect level wind rollers (1), sheave (3), and boom (5) for bends, cracks, breaks, and wear. Refer to
sheave (3), or boom (5) if damaged or worn.
5. Inspect bushings (2), (4), and (6) for wear. Refer to table 16-13, Boom Assembly Wear Limits, for
measurements. Replace bushings (2), (4), and (6) if worn.
Table 16-13. Boom Assembly Wear Limits.
WEAR LIMITS/TOLERANCES
ITEM
ITEM/POINT OF MEASUREMENT
NO.
MILLIMETERS
INCHES
1
Level wind rollers
2
Bushings inside diameter maximum
25.50
1.004
Steel
25.55
1.006
Brass
3
Sheave
38.48
1.515
4
Bushings inside diameter maximum
Boom
5
38.25
1.506
Bushing inside diameter maximum
6
16-127
