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TM 10-3930-638-24&P
2-31. SENDING UNITS AND SWITCHES MAINTENANCE (cont)
c. Engine and Transmission Temperature Switches (cont).
(1) Engine Temperature Switch (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
TESTING
6
Engine temperature switch a. Fill container
with water
b. Suspend
threaded
portion of
switch in
water
c. Connect ohm- Ohmmeter should indicate infinity
meter be-
tween termi-
nal and body
of switch
d. Slowly heat
Ohmmeter should indicate zero ohms
water to 220
when temperature of water is between
degrees while
198 to 212 degrees
observing
ohmmeter
NOTE
Replace engine temperature switch if proper indication is not
obtained in step 6d above.
e. Remove switch
from water
and discon-
nect ohm-
meter leads
INSTALLATION/REPLACEMENT
7
Engine compart-
a. Temperature switch (4) Install and
Turn clockwise until securely mounted to
ment front, left
tighten
engine
side of vehicle
b. Wire lead (3), lock
Install and
Until wire lead (3) is securely mounted to
washer (2) and nut (1)
tighten
switch terminal
c. Wire lead (3) and
Seal
Use silicone rubber sealer
switch terminal
d. Resistor (6)
Position
In retainer halves (5)
e. Retainer halves (5)
Push together
To secure resistor (6)
and turn
clockwise
2-164
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