TM-9-2320-260-34-2

TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 2 OF 2

JULY 1994
TM-9-2320-260-34-2

  TM-9-2320-260-34-2 - Page 497 of 863

TM 9-2320-260-34-2
16-17. HOIST
WINCH MAINTENANCE (M816) (Contd)
I
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 drum shaft (3), input shaft(s), and wormshafts (4) for bends, cracks, breaks, chips, and wear.
Refer to table 16-12, Hoist Winch Wear Limits, for measurements. Replace drum shaft (3), input
shaft (5), and wormshaft (4) if damaged or worn.
4.
Inspect drum (9), cover (7), gearcase (6), bracket (2), and plate (1) for cracks, bends, damaged
threads, and wear. Refer to table 16-12, Hoist Winch Wear Limits, for measurements. Replace
drum (9), cover (7), gearcase (6), bracket (2), and plate (1), if damaged or worn.
5.
Inspect gearcase bearings
(7)
and thrust washers (10) for wear. Refer to table 16-12, Hoist Winch
Wear Limits, for measurements, Replace gearcase bearings (8) and thrust washers (10) if worn.
6.
Inspect worm gear (11) and input shaft gear (12) for cracks, nicks, burrs, ridged, chipped, broken
teeth, or particles in teeth of worm gear (11). Refer to table 16-12, Hoist Winch Wear Limits, for
measurements. Replace worm gear (11) and input shaft gear (12), if damaged or worn.
Table 16-12. Hoist Winch Wear Limits.
ITEM
WEAR LIMITS/TOLERANCES
NO.
ITEM/POINT OF MEASUREMENT
INCHES
MILLIMETERS
1,2
Shaft support (2)
Inner diameter – bushing – maximum
2.130
54.10
3
Drum shaft
Outer diameter – four places – minimum
2.123
53.92
4
Wormshaft
Outer diameter – bearing journal – minimum
1.771
44.98
Outer diameter – sealing surface – minimum
1.765
44.83
5
Input shaft – outer diameter – minimum
1.746
43.35
6
Gearcase
Inner diameter – bushing – maximum
2.130
54.10
Width – cover edge to hub
4.469
113.51
Inner diameter – bearing bores (2) – maximum
3.937
100.00
7
Cover
Inner diameter – bushing – maximum
2.130
54.10
Width – bushing hub – minimum
2.000
50.8
8
Bearings (2)
Inner diameter – inner race – maximum
1.771
44.98
Outer diameter – outer race – minimum
3.936
99.97
9
Drum - outer diameter – minimum
4.992
126.80
10
Thrust washers (2) – thickness – minimum
0.062
1.57
11
Worm gear – width – hub - minimum
2.492
63.30
12
Input shaft gear
1.88
47.75
16-98


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