TM 9-2320-260-34-2
16-17. HOIST WINCH MAINTENANCE (M816) (Contd)
d. Assembly
NOTE
Coat all internal hoist winch parts with lubrication oil before
q
installation.
Coat inside lips of seals with GAA grease before installation.
q
1.
Install two new woodruff keys (14) on drum shaft (15).
2.
Using arbor press, install drum shaft (15) in worm gear ( 13) until drum shaft ( 15) extends 2.50 in.
(63.5 mm) from face of hub.
Insert drum shaft (15) through gearcase (2) until hub is seated.
3.
4.
Using arbor press, install bearing (16) on worm shaft (1). Ensure bearing (16) seats on shoulder of
wormshaft ( 1).
Insert wormshaft ( 1) into gearcase (2).
5.
Using arbor press, install bearing (3) into bore of gearcase (2) until seated on shoulder of worm-
6.
shaft (1), flush with face of gearcase.
Install dial indicator on gearcase (2), and measure backlash of worm gear ( 13) and worm shaft (1).
7.
Backlash should be 0.006-0.010 in. (0. 15-0.25 mm). Replace worm gear (13) if backlash is not within
limits.
8.
Using arbor press, install new seal (9) in cover (5).
Install new gasket (4) and cover (5) on gearcase (2) with four screws (6), new lockwashers (8), and
9.
screws (7).
Install washer (10) and new lockwasher (12) on cover (5) and drum shaft (15) with screw (11).
10.
11.
Install dial indicator on gearcase (2).
12.
Check end play of drum shaft (15).
a. End play should be 0.005-0.015 in. (0,13-0.38 mm).
b. If end play is less than 0.005 in. (O. 13 mm), remove cover (5) and remove gasket(s) (4). Recheck
end play.
c. If end play is more than 0.015 in. (0.38 mm), remove cover (5) and add gasket(s) (4). Install
cover (5) on drum shaft (15) and recheck end play.
16-100