3618 Engine Caterpillar


Crankshaft Seals

Usage:

3618 2MW



Illustration 1g00304423

(1) Crankshaft seals must be installed with the lip of the seal toward the inside of the engine,as shown above. Make sure that the correct seal is installed on each end of the crankshaft.

An SAE standard rotation engine will have crankshaft seals that are installed in the following locations:

  • 9Y-7624 Seal Assembly on the front of the engine

  • 9Y-7625 Seal Assembly on the rear of the engine

An SAE opposite rotation engine will have crankshaft seals that are installed in the following locations:

  • 9Y-7625 Seal Assembly on the front of the engine

  • 9Y-7624 Seal Assembly on the rear of the engine

(2) Rear face of cylinder block

(3) Front face of cylinder block

(4) Apply 4C-4774 Water and Temperature Resistant Grease to the bore of the adapter. Also, apply the grease to the holes (66 mm (2.6 inch) diameter) in the adapter.

(5) Apply clean engine oil to the O-ring seals at assembly.

(6) Position the sleeves on the adapters. Make sure that the arrow on the outside diameter of the sleeve is pointing in the direction of the rotation of the crankshaft. Assemble the sleeve onto the adapter. Make sure that the adapter bottoms out against the shoulder.

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