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 TM 5-4120-386-14
4-32. HEATER THERMOSTAT-Continued.
REMARKS
LOCATION/ITEM
ACTION
See Wiring Dia-
Test for continuity between
Test
a.
grams, Figures
contacts 1 and 2 and between
E-1 and E-2.
contacts 3 and 4. Contacts
should open on temperature
rise at 145-155 degrees F
(63-68 degrees C) and
Use thermometer
should close on temperature
to determine
drop at 100-120 degrees F
t e m p e r a t u r e of
(38-49 degrees C). Use heat
sensor surface.
gun as heat source for testing.
Replace if defective.
b.
See Wiring Dia-
Installation
a.
Connect leads to thermostat
grams, Figures
(19) with four screws and
E-1 and E-2
remove tags.
b. Attach the thermostat (19) to
bracket (23) with two screws
(17) and two lockwashers (18).
c. Secure the bracket (23) to
the center cover with two
screws (l).
See paragraph
d. Install top covers.
4-86
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