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Alternator Overcharging
Coolant Loss

Interim High-Mobility Engineer Excavator Nsn 2420-66-148-7692
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TM 5-2420-230-24-2
Troubleshooting Symptoms Charts
B3.9 and B5.9 Series Engines
Page TS-14
Section TS - Troubleshooting Symptoms
Coolant Contamination
This is symptom tree T018.
Cause
Correction
Verify the concentration of antifreeze in the
coolant. Add antifreeze or water to correct the
Coolant mixture of antifreeze and water is not
.......
concentration. Refer to Cooling System
correct
Specifications in Section 8.
OK
C
Drain and flush the cooling system. Fill with
correct mixture of antifreeze and water. Refer
oolant is rusty and has debris
.......
to the Operation and Maintenance Manual, B
Series Engines, Bulletin No. 3810205.
OK
T
Check the transmission oil cooler and torque
ransmission oil cooler or torque converter
.......
converter cooler for coolant leaks. Refer to the
cooler is leaking
manufacturer's instructions.
OK
L
ubricating oil leaks from lubricating oil cooler,
Refer to the Lubricating Oil Consumption -
.......
Excessive symptom tree.
head gasket, head, and cylinder block
L-598


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