TM 55-4920-227-15
1
Cover
23
Screw (2 rqr)
47
Screw (4 rqr)
2
Gasket
24
Washer (2 rqr)
48
Washer (4 rqr)
3
Screw (3 rqr)
25
Auxiliary actuator
49
Ball bearing
4
Lockwasher, ET (3 rqr)
26
Microswitch
50
Shaft
5
Housing cover
27
Screw (2 rqr)
51
Nut, hex, No. 8-32 (4 rqr)
6
Gasket
28
Washer (2 rqr)
52
Washer (4 rqr)
7
Screw (4 rqr)
29
Mounting plate
53
Stud (4 rqr)
8
Washer (4 rqr)
30
Screw (3 rqr)
54
Bracket
9
Retaining ring
31
Washer (3 rqr)
55
Ball bearing
10
Screw, cap, socket-hd, No.
32
Oil seal
56
Shims, 0.005, 0.010, 0.020,
10-32 x 1/2 in (2 rqr)
33
Bearing clamp
0.025 in. thk
11
Lockwasher, ET (2 rqr)
34
Self-aligning bearing
57
Stator assembly
12
Bushing
35
Worm gear
58
Gasket
13
Nut
36
Screw
59
Capacitor assembly
14
Shim
37
Shaft
60
Screw (2 rqr)
15
Support arm
38
Worm
61
Washer (2 rqr)
16
Speed stop (2 rqr)
39
Taper pin
62
Stator assembly
17
Screw (2 rqr)
40
Worm gear
63
Worm
18
Screw, cap, socket-hd, No.
41
Nut, hex, 7/16-20
64
Taper pin
6-32 x 3/8 in.
42
Washer
65
Rotor assembly
19
Speed stop (2 rqr)
43
Shim, 0.010 in. thk
66
Ball bearing
20
Auxiliary actuator
44
Shim, 0.0299 in. thk
67
Grommet
21
Microswitch
45
Key
68
Gearcase
22
Spacer
46
Bearing clamp
Figure 17 - Continued.
capacitor assembly (59) and gasket (58)
the shaft. The gear bore should measure
from the stator assembly (62).
0252 inch. Replace if unserviceable.
(12) Remove the grommet (61) from the
0.251
gearcase (68).
(6) Inspect the worms for chipped, cracked,
c. Cleaning, Inspection, and Repair.
broken, or worn teeth. Check the fit of the
(1) Wash all hardware in an approved cleaning
worm bores with their respective shafts.
solvent and dry. Clean all bearings with
Replace if unserviceable.
cleaning solvent and blow dry with
(7) Inspect the ball bearings for noise when
compressed air. Cover the cleaned ball
rotated, loose bearings, pitted bearings, and
bearings with a film of light oil.
scored marks on inside surface. Check the
(2) Clean nonelectrical components in an
fit of the bearings to their respective shafts,
approved cleaning solvent and blow dry with
and
housing
bores.
Replace
if
compressed air.
unserviceable.
(3) Inspect the covers for cracks or damage.
(8) Inspect the shafts for stripped threads,
Inspect the support arm, speed stop, and
square shoulders, and worn keyways.
auxiliary actuators for burrs, cracks, and
Check the fit of the shaft bearing sections to
stripped threads. Remove any burrs with a
their respective bearing bores. Replace if
fine stone.
unserviceable.
(4) Inspect the microswitches for cracked case,
(9) Inspect the stator assembly for cracks or
sticking plunger, and broken terminals.
damaged frame, broken leads, and frayed
(5) Inspect the worm gear for stripped threads,
insulation. Replace broken leads and tape
cracked, chipped, broken or excessively
frayed insulation.
worn teeth. Check the fit of the bore with
AGO 6729A
31
