Engine and Transmission Temperature Switches (cont).

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).

ITEM

REMARKS

ACTION

LOCATION

STEP

TESTING

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

Engine compart-

a. Temperature switch (4) Install and

Turn clockwise until securely mounted to

ment front, left

tighten

engine

Install and

b. Wire lead (3), lock

side of vehicle

Until wire lead (3) is securely mounted to

tighten

washer (2) and nut (1)

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