TM-9-2320-387-24-1

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1

DECEMBER 1997

CHANGE 1

TM-9-2320-387-24-1 - Page 228 of 1205

REFERENCE INFORMATION

0

II

. .

Keep hands and arms

away from fan blades

and serpentine belt when

engine is running or

serious injury may

result.

See page 2-163 for a

description of the fan

system operation and

to see if

ifs

engaged or not.

See page 2-163 for a description

of the fan

system operation and to see if it’s engaged or

not.

If you know the engine is cold and

the fan temperature

switch is good,

you can reconnect 4500 to the

switch and see if the fan

disengages.

Replace the fan temperature

switch

(para. 4-34).

You can also remove the switch to test it

hot and cold.

TM 9-2320-387-24-l

ENGINE COOLING

RESISTANCE

AND CONTINUITY

04,500

OHMS

STEIICE-R TEST 91

1. Connect RED clip and BLACK clip to the

terminations

indicated in the question.

RED

to

the first, BLACK to the second.

2. Start Test 91,04,500

Ohms.

3. Displayed reading is in ohms.

Less than

5 ohms is continuity.

If the resistance is over

4,560 ohms, STWICE-R

displays

.9.9.9.9.

*

CONTINUITY (RESISTANCE)

MULTIMETER

1. Set the voltmeter to an ohms scale of about

1.000 ohms.

2. Connect the RED and BLACK leads to the

connections

stated in the question.

3. Be sure to read the correct scale. Less than

5 ohms indicates continuity.

For an open circuit

the meter should peg full scale (needle all the

way to the left).

L

2-l 71