TM 5-3805-292-10
0018
0.
COOLING SYSTEM
MALFUNCTION
Coolant temperature warning light and alarm indicate engine is overheating.
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.
Wear effective eye, hand, and skin protection when handling coolants.
Failure to follow these warnings may result in injury to personnel.
CAUTION
When alarm sounds, shut down machine immediately. Failure to follow this caution may result in damage to
equipment.
CORRECTIVE ACTION
Step 1.
While engine cools, check cooling system for leaks.
a.
If leaks are found, notify Field Maintenance.
b.
If no leaks are found, proceed to step 2.
Step 2.
With engine sufficiently cooled, check coolant level of engine (WP 0020).
a.
If coolant level is low, fill engine with coolant to proper level (WP 0020).
b.
If coolant level is OK, proceed to step 3.
Step 3.
Ensure radiator is free of bugs, dirt, and debris.
a.
Remove all foreign matter from radiator.
b.
If problem still exists, proceed to step 4.
Step 4.
Check belts (WP 0020).
a.
If belts are off, notify Field Maintenance.
b.
If belts are OK and problem still exists, proceed to step 5.
Step 5.
Start engine and monitor coolant temperature closely.
a.
If coolant temperature warning light and alarm indicate engine overheat condition, shut
down engine immediately.
b.
Notify Field Maintenance.
0018-3
