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 26. Coolant in oil
Cause
Correction
Failure of oil cooler core.
Install a new core for the oil cooler. Drain
crankcase and refill with clean lubricant. Install
new oil filter element.
Failure of cylinder head gasket.
Check cylinder liner projection. Install a new
cylinder head gasket. Tighten the bolts holding
the cylinder head.
Crack or defect in cylinder head.
Install a new cylinder head.
Crack or defect in cylinder block.
Install a new cylinder block.
Failure of, liner seals.
Replace seals.
27. Oil in cooling system
Cause
Correction
Defect in core of oil cooler.
Install a new core in the oil cooler.
Failure of cylinder head gasket.
Check cylinder liner projection. Replace head
gasket.
28. Coolant is too hot
Cause
Correction
Not enough coolant in system.
Add coolant to cooling system. Check for
leaks.
Pressure relief valve has a defect.
Check operation of pressure relief valve. Install
a new pressure relief valve if necessary.
Combustion gases in coolant.
Find out where gases get into the cooling
system. Make repairs as needed.
Water temperature regulators (thermostats) or
Check water temperature regulators for correct
temperature gauge has defects.
operation. Check temperature gauge operation.
Install new parts as necessary.
Water pump has a defect.
Make repairs to the water pump as necessary.
Too much load on the system.
Reduce the load.
Wrong fuel injection timing.
Make adjustment to timing.
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