3126B Engine for Caterpillar Built Machines Caterpillar


Coolant in Engine Oil

Usage:

963C BBD

Probable Causes

  • Engine oil cooler core

  • Cylinder head gasket

  • Cylinder head

  • Cylinder block

Recommended Actions

Engine Oil Cooler Core

  1. Remove the oil cooler core from the engine. Check for the oil cooler core for leaks. If a leak is found, install a new oil cooler core. Refer to the Disassembly and Assembly manual.

  1. Drain the crankcase and refill the crankcase with clean engine oil. Install new engine oil filters. Refer to the Operation and Maintenance Manual.

Cylinder Head Gasket

  1. Remove the cylinder head. Refer to the Disassembly and Assembly manual.

  1. Install a new gasket kit for the cylinder head. Refer to the Disassembly and Assembly manual.

Cylinder Head

Check for cracks in the cylinder head. If a crack is found, repair the cylinder head and/or replace the cylinder head. Refer to the Disassembly and Assembly manual.

Cylinder Block

Inspect the cylinder block for cracks. If a crack is found, repair the cylinder block or replace the cylinder block.

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