ENGINE WATER TEMPERATURE GAGE SHOWS INCORRECT TEMPERATURE DURING OPERATION

TM9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

12. ENGINE WATER TEMPERATURE GAGE SHOWS INCORRECT TEMPERATURE DURING OPERATION

(MORE THAN 185F (85C) OR LESS THAN 160F (71C)).

NOTE

If water temperature gage shows zero temperature during operation, go to step 4.

If water temperature gage shows more than 185F (85C), perform steps under

Step 1.

ENGINE OVERHEATS (page 3-35). If water temperature gage shows less than

160F (71C), perform steps under ENGINE DOES NOT REACH NORMAL

OPERATING TEMPERATURE (page 3-37).

Open left side of hood and remove left side panel (TM 9-2320-270-10). Put key

Step 2.

in ON position. Make sure engine has cooled down. Using multimeter set at 30

vdc, put red probe on water temperature sender terminal (1) and black probe on

engine (2).

If meter does not read 12 to 15 volts, replace water temperature sender

Start engine and let it heat up (TM 9-2320-270-10). Using muitimeter set at 30

Step 3.

vdc, put red probe on water temperature sender terminal (1) and black probe on

engine (2), take the reading and shut down engine (TM 9-2320-270-10).

a. If meter reads 3 to 6 volts, replace water temperature gage

(page 4-262). Install left side panel and close left side of hood

(TM 9-2320-270-10).

b. If meter does not read 3 to 6 volts, replace water temperature sender

(page 4-416), and repeat step 3. If meter still does not read 3 to 6

volts, install left side panel and close left side of hood (TM 9-2320-

270-10) and notify direct support maintenance.

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