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Page Title:
Table 9. Cooling System Troubleshooting Procedures - Continued. |
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 TM 10-3930-660-24-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 9. Cooling System Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10. Check for overloaded
Verify that the engine load rating
1.
Coolant Temperature Above Normal -
engine.
is not being exceeded (WP 0002
Continued.
1. Check for incorrect
Test thermostat. Replace
2.
Coolant Temperature Below Normal.
thermostat or faulty
thermostat if required (WP 0055
thermostat.
2. Check temperature sender or
Replace gauge and/or
gauge for malfunctions.
temperature sender if necessary
3. Check if coolant is flowing
Flush the engine cooling system
by temperature sensor.
with cleaning solution and fill
cooling system with coolant
1. Check for radiator or cab
a. Inspect the radiator and
3.
Coolant Loss.
heater leaking.
cab heater hoses and
connections for leaks (WP
b. If oil is present in the
coolant, check for a
transmission or lube oil
cooler leak.
2. Check for overheating or
Review the operation for
leaking compression gasses
overheating and low power.
causing loss of coolant
Refer to Step 1, Coolant
through the radiator
Temperature Above Normal, in
overflow.
this table.
3. Check for transmission
Test combination radiator/
cooler and transmission
transmission oil cooler, and if
cooler lines leaks.
necessary, replace (WP 0053
Check for rusty coolant,
Replace coolant if necessary
4.
Contaminated Coolant.
operation without correct
mixture of antifreeze and
coolant. Review the coolant
change interval.
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