Coolant Contamination - Doosan D20G Service Manual

Coolant Contamination

This is symptom tree T-013.
Cause
Coolant is rusty
Lubricating oil cooler for powertrain is damaged
Cylinder head gasket is cracked or damaged
Cylinder block is cracked or porous
Diesel Engine
OK
OK
OK
Review the coolant change interval. Drain and
flush the system. Fill the system with the
Correct mixture of coolant and water.
Refer to the OEM's service manual.
Replace the cylinder head or gasket.
Replace the cylinder block.
39
Correction
Troubleshooting Symptoms