TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4.
ENGINE COOLANT TEMPERATURE EXCEEDS 2250F (1070C).
WARNING
Be careful when removing radiator cap. If engine is hot, escaping steam could burn you. Use a rag to
cover radiator cap. Unscrew cap just enough to allow any built-up pressure to escape. When all pressure
has been relieved, unscrew cap and take off.
Step 1.
Unscrew and take radiator cap (1) off radiator (2). Check that coolant level is within 1 inch (25.4 mm)
below top of radiator. Check for rust, dirt, or lubricating oil in coolant.
a.
If coolant level is low, refill (page 2-628).
b.
If coolant is contaminated with rust or dirt, flush and refill (page 2-628).
c.
If coolant is contaminated with lubricating oil, notify Direct Support Maintenance.
d.
If coolant is clean and at proper level, go to step 2.
Step 2.
Check that shutters (3) on radiator (2) are completely open.
a.
If shutters (3) are not open, notify Direct Support Maintenance.
b.
If shutters (3) are open, go to step 3.
Step 3.
Check for loose, broken, or missing fan drivebelt (4).
a.
If fan drivebelt (4) is loose, tighten (page 2-661).
b.
If fan drivebelt (4) is broken or missing, replace (page 2-661).
c.
If fan drivebelt (4) is not loose, broken, or missing, go to step 4.
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