TM 5-3805-248-10
TROUBLESHOOTING PROCEDURES - CONTINUED
0012 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
COOLING SYSTEM
WARNING
Do NOT service cooling system unless engine has been allowed to cool down. This is a pressurized cooling system
and escaping steam or hot coolant will cause serious burns.
Do NOT remove cooling system radiator cap when engine is hot. Allow engine to cool down. Failure to follow this
warning may cause serious burns.
Wear effective eye, glove, and skin protection when handling coolants. Failure to follow this warning may cause
injury.
1.
Check coolant temperature gage for
Reduce load and continue to monitor
Coolant Temperature Gage
an indication in red range.
temperature. If indication is still in red
Is in Red Range Normal
range, go to test step 2.
Indicating Engine Is
Overheating.
2.
Allow engine to idle at 775 RPM to
If problem still exists shut down engine
cool down.
and go to test step 3.
3.
Check radiator for debris.
Remove debris. If there is excessive debris,
notify Unit Maintenance. If no debris is
present, go to test step 4.
4.
Check system for leaks.
If leaks are found, notify Unit
Maintenance. If no leaks are found, go to
test step 5.
5.
Check coolant level.
If low, add coolant (WP 0014 00). If
coolant level is okay, go to test step 6.
6.
Check water pump and fan drive belts
If water pump and fan drive belts are loose
for looseness and/or damage.
and/or damaged, notify Unit Maintenance.
If belts are okay, go to test step 7.
7.
Check engine oil level.
If engine oil is low, fill to correct level (WP
0014 00). If problem still exists, go to test
step 8.
8.
Check transmission oil level.
If transmission oil level is low, fill to
correct level (WP 0014 00). If level is okay
and problem still exists, notify Unit
Maintenance.
