ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE (GAGE READS IN COLD RANGE)

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

9. ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE (GAGE READS IN COLD RANGE)

Step 1.

Remove and test thermostat (page 2-396).

a. If thermostat closes properly, install (page 2-396) and replace ENGINE WATER TEMP. indicator

(page 2-545).

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

10. ENGINE SMOKES Step 1. Start engine (TM 5-2420-222-10) and check color of exhaust smoke. Shut down engine

(TM 5-2420-222-10).

a. If smoke is black or gray, go to step 2.

b. If smoke is white, go to step 5.

c. If smoke is blue, go to step 6.

Step 2.

Check fuel tank for proper diesel fuel (TM 5-2420-222-10).

a. If proper diesel fuel is present, go to step 3.

b. If improper diesel fuel is present, drain fuel tank (page 2-250).

Step 3.

Inspect exhaust system for dents and obstructions (page 2-343).

a. If muffler (1) and muffler extension stack (2) are not dented or obstructed, go to step 4.

b. If muffler (1) is dented, replace (page 2-343).

c. If muffler extension stack (2) is dented, replace (page 2-347).

d. If muffler (1) or muffler extension stack (2) is obstructed, remove obstructions.

Step 4.

Check for dirty or damaged fuel injection nozzles (page 2-201).

a. If fuel injection nozzles are not dirty or damaged, go to step 5.

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