TM 55-4920-227-15
1
Grease fitting
17
Bracket
2
Pipe plug
18
Bearing cap
3
Cover
19
Screw, cap, hex-hd, 5/16-18 x 2 3/4 in.
4
Gasket
20
Screw (2 rqr)
5
Base
21
Washer (3 rqr)
6
Screw, machine, rd-hd, No 12-24 x 3/4 in. (8 rqr)
22
Washer (3 rqr)
7
Lockwasher (8 rqr)
23
Ball bearing
8
Flat washer, No. 12 (8 rqr)
24
Rotor assembly
9
Bracket assembly
25
Stator assembly
10
Screw, cap, hex-hd, 1/2-13 x 3/4 in. (4 rqr)
26
Terminal plate
11
Washer (4 rqr)
27
Screw (4 rqr)
12
Washer (4 rqr)
28
Washer (4 rqr)
13
Air deflector
29
Cover
14
Bracket guard
30
Bolt, sq-hd, 1/4-20 x 6 1/2 in (2 rqr)
15
Screw, machine, rd-hd, No. 12-24 x 3/8 in. (6 rqr)
31
Washer (2 rqr)
16
Lockwasher (6 rqr)
Figure 19 - Continued.
four screws (6), flat washers (8), and
from the generator mounting bracket (36)
lockwashers (7).
and remove the bracket from the gearcase
e. Installation.
(40), and shafts (42 and 43).
(1) Install the varidrive motor on the adapter
(7) Remove 24 studs (35), 2 dowel pins (39), 2
bracket assembly (para. 56).
ball bearings (31) and the extension bushing
(2) Connect the tagged electrical leads to the
(45) from the generator mounting bracket
proper terminal points.
(36). Remove extension shaft (48), two felt
(3) Install the gasket (4), and cover (3) on the
washers (47) and oil seal (46) from the
base (5) and secure with four screws (6),
extension bushing.
lockwashers (7), and flat washers (8).
Note.
To facilitate assembly,
58. Gearcase and Driven Shaft
measure and note the distance the
a. Removal and Disassembly.
extension bushing protrudes from
(1) Remove the varibelt (para. 54).
the mounting bracket.
(2) Remove the pipe plug (32, fig. 20) from the
gearcase (40) and drain the lubricant into a
(8) Remove the bearing cap (44) from the shaft
suitable container.
(42) and remove the shaft from the ball
(3) Use a suitable bearing puller and remove
bearing (41) in the gearcase (40).
the shaft bushing (7) from the end of the
(9) Remove the other bearing cap (44) and
driven shaft (58). Slide the bearing cap (8)
shaft (43) in a similar manner.
off the shaft, and press the ball bearing (6)
(10) Remove two locknuts (50) from the driven
from the shaft bushing (7). Remove the key
shaft (58) and use a suitable gear puller to
(59) from the keyway in the driven shaft.
remove the gear (49) from the shaft.
(4) Remove two screws (27), and washers (28)
Remove the machine key (51) from the shaft
from the bearing cap (26) and remove the
keyway.
cap from the pinion shaft (42). Remove the
(11) Attach a rope sling to the gearcase (40).
other bearing cap (26) from the pinion shaft
Remove four screws (33), and washers (34)
(43) in a similar manner.
from the gearcase and with a lifting device
(5) Straighten the tangs on the lockwasher (30)
remove the gearcase with assembled driven
and remove the locknut (29) and lockwasher
shaft from the case frame (63).
(30) from the pinion shaft (42). Remove the
(12) Straighten the tabs on the lockwasher (56)
locknut (29) and lockwasher (30) from the
and remove the locknut (55) and lockwasher
shaft (43) in a similar manner.
(56), from the driven shaft (58).
(6) Remove 10 screws (37) and washers (38)
AGO 6729A
39
