TM 55-4920-221-14
15.
Nut No. 1032 (15 rqr)
33.
Stowage shelf
16.
Load rack brace (2 rqr)
34.
Screw, cap, hex-hd, 1/4-20 x 5/8 in. (6 rqr)
17.
Screw (2 rqr)
35.
Nut (6 rqr)
18.
Nut (2 rqr)
36.
Rear channel
19.
Fan blade (2 rqr)
37.
Front channel
20.
Motor 1/15 hp (2 rqr)
38.
Screw, cap, hex-hd, 5/16-18 x 3/4 in. (4 rqr)
21.
Screw, cap, hex-hd (8 rqr)
39.
Nut (4 rqr)
22.
Washer, lock, 1/4-20 (8 rqr)
40.
Screw (6 rqr)
23.
Nut
41.
Nut (6 rqr)
24.
Bracket (2 rqr)
42.
Hinge
25.
Screw, cap, hex-hd, 1/420 x 5/8 in. (8 rqr)
43.
Strip
26.
Nut (8 rqr)
44.
Left Panel
27.
Cleat (2 rqr)
45.
Right panel
28.
Screw (2 rqr)
46.
Screw (9 rqr)
29.
Nut (2 rqr)
47.
Screw (9 rqr)
30.
Terminal block
48.
Nuts (18 rqr)
31.
Screw (2 rqr)
49.
Frame
32
Nut (2 rqr)
Figure 17-- Continued.
(3) Wipe large components with a cloth
brace (11) will be removed with millboard (12).
moistened in cleaning solvent P-D-680 and dry with
(2) Remove five baffle mounting brackets
compressed air.
(27) and two terminal block mounting brackets (28) by
(4) Inspect top assembly, baffles, and legs for
removing 14 screws (29), and nuts (30).
minor bends and cracks. Replace as necessary.
(3) Remove leg brace angles (31) by
(5) Inspect terminal block for broken
removing four capscrews (32) and nuts (33).
terminals and cracks. Replace as necessary.
(4) Remove thermostat (16) by removing
(6) Inspect thermostat for broken terminals,
screw (17) and nut (18) securing thermostat to
cracks, and burn marks. Replace as necessary.
thermostat mounting strip.
(7) inspect bus bars for misalignments and
(5) Remove other thermostat in a similar
scratch marks. Straighten misalignments and remove
manner.
minor scratches with a file. Replace as necessary.
(6) Remove terminal block (1) by removing
(8) Inspect resistors for broken terminals,
screw (3), brace (2), nut (5), three screws (4) and nuts
burn marks, discoloration, and cracks. Replace as
(5) securing terminal block (1) to terminal block
necessary.
mounting brackets (28).
d. Reassembly.
(7) Remove bus bars (19 and 22) by
removing two capscrews (20) and screws (23 and 25).
(1) Position four legs (23, 24, 25, and 26,
(8) Remove leads and detach 1'17 bus bars
(6, figure 19) 25 bus bars (7), 13 bus bars (8), and bus
and two strips (20).
bars (9 and 10) by removing 4'8 screws (1), 230 screws
(2) Install 33 resistors (11) and 33 resistors
(3) and seven screws (2).
(12), 27 resistors (13) and 27 resistors (14), and three
(9) Remove leads from all resistors.
resistors (15) by securing with 123 stove rods (16) and
nuts (19). Connect leads to resistors.
(10) Remove 33 resistors (11), 33 resistors
(12), 27 resistors (13), 27 resistors (14), and three
(3) Install 117 bus bars (6), 25 bus bars (7),
resistors (15) by removing 123 stove rods (16) and nuts
13 bus bars (8), and bus bars (9 and 10) securing with
(19).
48 screws (1), 230 screws (3) and seven screws (2).
(11) Detach two thermostat mounting strips
(4) Install bus bars (19 and 22, figure 18) and
(20), 24 resistor supports (21), two brackets (22), and
secure with screws (23 and 25).
four legs (23, 24, 25, and 26).
(5) Position terminal block (1) to mounting
c. Cleaning, Inspection, and Repair.
brackets (28) and secure with brace (2), screw (3), nut
(5), three screws (4), and nuts (5).
(1) Wash hardware in dry cleaning solvent,
P-D-680.
(6) Position thermostat (16) to thermostat
mounting strip and secure with screw (17) and nut (18).
(2) Wipe electrical parts with a clean, lintfree
cloth moistened in cleaning solvent P-D-680 and dry
thoroughly.
53
