A Series Diesel Engine Troubleshooting Logic 37
Coolant Loss (Continued)
Cause Correction
If the Engine is Aftercooled, After
Cooler Leak
Check/Replace the Aftercooler. Look for
Coolant in the Intake Manifold and in the
Oil. Refer to Page 119
OK
Lube Oil Cooler Leak
Check/Replace the Oil Cooler. Look for
Coolant in the Oil. Refer to Page 119
OK
Head Gasket Leak
Check/Replace the Head Gasket.
Refer to Page 118
OK
Cracked or Porous Head
Check/Replace the Head.
Refer to Page 157
OK
Leak in Cylinder Block Coolant
Passages
Check/Replace the Cylinder Block.
Refer to Page 55, 56.
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