MANIFOLD 1087742 - Caterpillar

Emulsion is a mixture of oil and water. The water occurs when condensation forms in the engine during certain operating and seasonal conditions. The emulsion may appear light in color. Emulsion may be found in the following areas:
Engine oil filler
Engine oil level gauge
Valve cover
Crankcase ventilation systemThe emulsion should disappear with increased engine operating temperatures at higher load conditions.Probable Causes
Engine oil cooler core
Water pump
Cylinder head gasket
Cylinder liner
Cylinder headRecommended Actions
Engine Oil Cooler Core
Check for leaks in the oil cooler core. If a leak is found, install a new oil cooler core. Refer to the Disassembly and Assembly manual.
Drain the crankcase and refill the crankcase with clean engine oil. Install new engine oil filters. Refer to the Operation and Maintenance Manual. Water Pump
Perform a pressure test of the cooling system. Refer to Testing and Adjusting, "Cooling System - Test".Cylinder Head Gasket
Remove the cylinder head. Refer to the Disassembly and Assembly manual.
Check the cylinder liner projection. Refer to the Systems Operation/Testing and Adjusting manual.
Install a new cylinder head gasket and new water seals in the spacer plate. Refer to the Disassembly and Assembly manual. Cylinder Liner
Check for cracked cylinder liners. Replace any cracked cylinder liners. 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.