TM-5-3805-254-20-1

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL VOLUME 1 OF 2

JANUARY 1988

TM-5-3805-254-20-1 - Page 177 of 790

TM 5-3805-254-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

5.

ENGINE DOES NOT REACH OPERATING TEMPERATURE, 165°F (740C).

Step 1.

Check that shutters (1) on radiator (2) are closed.

a.

If shutters (1) are not closed, notify Direct Support Maintenance.

b.

If shutters (1) are closed, go to step 2.

Step 2.

Remove thermostat and check for proper operation (page 2-633).

a.

If thermostat is defective, replace (page 2-633).

b.

If thermostat is not defective, go to step 3.

Step 3.

Test coolant (TB 750-651) for correct amount of water and antifreeze.

a.

If coolant mixture is not as specified, drain and fill radiator (page 2-628).

b.

If coolant mixture is as specified, notify Direct Support Maintenance.

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