ENGINE COOLANT TEMPERATURE TOO HIGH (GAGE READS IN OVERHEAT RANGE) (cont)

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

b. If temperature indicator (4) does not read properly, replace ENGINE WATER TEMP. indicator

(page 2-545).

Step 3.

Remove and test thermostat (page 2-396).

a. If thermostat opens properly, install (page 2-396) and go to step 4.

b. If thermostat does not open properly, replace (page 2-396).

Step 4.

Unscrew and remove radiator filler opening cap (1). Start and warm up engine (TM 5-2420-222-10).

Using flashlight, look into radiator (2) and check for coolant flow.

a. If coolant is not flowing, replace water pump (page 2-408).

b. If coolant is flowing replace radiator filler cap (1) and notify Direct Support Maintenance.

TA242731

2-51