C3.3B Tier 4 Interim and EU Stage 3A Engines for Caterpillar Built Machines – Crankshaft Front Seal – Remove and Install

Removal Procedure

Start By:

  1. Remove the crankshaft pulley.

Note: Refer to Specification UENR0995 "Engine Design" for non-specified engine Torque Values.


Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Dispose of all fluids according to local regulations and mandates.

    Illustration 1g02795123

    Illustration 2g02795124

  1. Use a suitable pry bar to remove crankshaft front seal (1) .

Installation Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     390-1140     Driver     1    
B     6V-6640     Sealant     1    

Note: The crankshaft front seal should be installed dry. Lubricate the inner rubber portion of the crankshaft front seal.

    Illustration 3g02796112

    Illustration 4g02795123

  1. Lubricate the inner rubber portion of crankshaft front seal (1) . Apply Tooling (B) on crankshaft front seal (1) . Position crankshaft front seal (1) on Tooling (A) . Install crankshaft front seal (1) on the crankshaft.

End By: Install the crankshaft pulley.

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