C7 Industrial Engines Disassembly and Assembly – Crankshaft Rear Seal – Remove

Removal Procedure

Start By:

Remove the flywheel. Refer to Disassembly and Assembly, “Flywheel – Remove and Install”.

  1. Use Tooling (A) to drill three evenly spaced holes in the crankshaft rear seal.

  1. Carefully remove crankshaft rear seal (1) by alternating the position of Tooling (B) from hole to hole. This will allow crankshaft rear seal (1) to be removed evenly without damage to the rear flange surface of the crankshaft.

Note: New engines from the factory do not have a wear sleeve. Engines with seals that have been replaced will be equipped with a wear sleeve.


  1. Use Tooling (C) and Tooling (D) to remove the wear sleeve (if equipped).


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