TM 55-4920-221-14
Table 2. Load Bank Resistance Measurements
Install the other thermostat in the same manner.
Switch Placed in
Measurement
Resistance
(7) Position leg brace angles (31) to legs and
ON Position
Terminals
in Ohms
secure with four screws (32) and nuts (33).
S-22
E and B
14.40
(8) Position five baffle mounting brackets
I and F
14.40
M and J
14.40
(27) and two terminal mounting brackets (28) to legs and
S-21
E and B
14.40
secure with 14 screws (29) and nuts (30).
I and F
14.40
(9) Position rear millboard (12) to mounting
M and J
14.40
brackets (27) and mounting brackets (28) and secure
S-20
E and B
14.40
with six screws (13), lockwashers (14), and nuts (15).
I and F
14.40
M and J
14.40
e. Installation.
S-19
E and B
14.40
I and F
14.40
(1) Place load rack assembly (5, figure 17) on
M and J
14.40
front and rear channels (36) and front and rear channels
S-18
E and B
14.40
(37) and secure with four screws (6) and nuts (7).
I and F
14.40
(2) Position load rack braces (16) and secure
M and J
14.40
S-17
E and B
14.40-159.80
with two screws (17) and nuts (18).
S-16
I and F
14.40-159.80
(3) Position front millboard (8) on load rack
S-15
M and J
14.40-159.80
and secure with six screws (9), washers (10), and nuts
S-14
E and B
1320-158.60
(11).
S-13
I and F
13.20-158.60
S-12
M and J
13.20-158.60
(4) Position load rack baffles (12) on load
S-39
12 and J
2.85-148.25
rack assembly (5) and secure with 15 screws (14),
S-38
15 and J
2.85
harness support rod bracket (13), and 15 nuts (15).
S-37
C and 18
1.425
S-36
C and 12
1.425
(5) Position top (1) on rear cabinet and
S-35
C and 15
0.713
secure with two screws (2) and nuts (4), and 16 screws
S-34
C and 12
0.570
(3) and nuts (4).
S-33
C and 18
0.570
f. Resistance Test.
The following test will
S-32
C and 12
0.285
S-31
C and 15
0.285
determine if load links, load resistors, and
S-30
C and 18
0.285
interconnecting cables have been assembled correctly.
Use a suitable resistance bridge (type ZM-4/U, or equal)
145. REAR CABINET ASSEMBLY.
to perform resistance tests called for in this paragraph.
a. Removal.
(1) Remove disconnect switches and load
(1) Tag and disconnect leads from terminal
links and place load switches in OFF position.
block (29, figure 20) and remove U-bolt (16) and four
(2) Rotate rheostat controls counterclockwise
nuts (17) securing wiring harness to cabinet.
for a minimum indication.
(2) Remove nine nuts (27) and screws (26)
(3) Refer to table 2 for resistance readings as
then remove rear cabinet assembly (24) from front
measured from indicated terminals. Switches should be
panel assembly (28).
fin OFF position except the one indicated. Switch
b. Disassembly.
reference designations and measurement terminals are
(1) Remove load rack assembly and two
shown in figure 4.
motors (paragraphs 143 and 144).
(4) Restore disconnect switches and load
(2) Remove six nuts (41, figure 17) screws
links to their original positions (figure 4).
(40) securing rear sections of left panel (44) to right
panel (45).
(3) Remove hinge (42), strip (43), and left
panel (44) from frame (49) by removing nine nuts (48)
and screws (46).
(4) Remove right panel (45) by removing nine
nuts (48) and screws (47).
(5) Remove two channels (36 and 37) and
stowage shelf (33) from frame (49) by removing six nuts
(35) from capscrews (34) and four nuts (39) from
capscrews (38).
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