TM 5-3810-294-34
b. Installation. Refer to figure 2-10 and install
(d) Remove rear drum chain case
the worm shaft assembly. Check worm shaft end play,
and remove the rear drum drive chain.
(e) Remove cover which provides
(between 0.003 and 0.005 inch) using a dial indicator. If
end play is not within these limits, add or subtract shims
access to the horizontal swing shaft drive chain. Loosen
(40, 41, 42, FIG. 2-11) until correct. end play is obtained.
the drive chain. Remove chains from the horizontal
swing shaft sprockets, but do not break the chains at the
master links.
2-20.
Boom Hoist Shaft
(2) After the above has been done, the
boom hoist shaft will be as shown in figure 2-11. Refer
a.
Removal.
to figure 2-11 and disassemble the boom hoist as
(1.) Refer to TM 5-3810-294-20 and
follows:
perform the following operations:
Note. It is necessary to disassemble the
(a) Lower attachment to the ground.
shaft to remove it. It cannot be removed as an
(b) Remove boom hoist clutch.
assembly.
(c) Remove boom hoist brake.
1.
Planetary pinion with bushing
17.
Hex nut
33.
Sprocket
2.
Oil seal
18.
Bearing retainer
34.
Spacer
3.
O-ring
19.
Bearing
35.
Worm wheel assembly
4.
Planetary clutch drum
20.
Bearing
36.
Key
5.
Bearing retainer
21.
Bearing retainer
37.
Spacer
6.
Bearing
22.
Oil seal
38.
Sprocket
7.
Oil seal
23.
Lockwire
39.
Spacer
8.
Spacer
24.
Capscrew (21
40.
Shim
9.
O-ring
25.
Keeper plate
41.
Shim
10.
Shaft
26.
Sprocket
42.
Shim
11.
Planetary clutch hub and gear
27.
0-ring
43.
Bearing retainer
12.
Grease fitting
28.
Spacer
44.
Oil seal
13.
Capscrew
29.
Bearing retainer
45.
Bearing
14.
Lockwasher
30.
Capscrew
46.
Planetary boom hoist drum
15.
Spacer
31.
Lockwasher
47.
Bearing
16.
Lockwasher
32.
Spacer
48.
Pinion pin
Figure 2-11. Boom hoist shaft assembly, removal and replacement.
2-30
