Cummins ISX11.9 CM2250 – Service Manual 001-023   Crankshaft Seal, Front

Table of Contents




Replacement of the front crankshaft seal requires the use of a crankshaft seal replacer kit, Part Number 4918991. The crankshaft seal replacer kit contains the followoing items:

  • Replacer plate
  • Stud x 3
  • Hex head capscrew x 2
  • Self tapping capscrew x 10
  • Hex nut x 3.

Position the replacer plate (1) over the end of the crankshaft and against the crankshaft seal.


Six small holes are machined into the replacer plate (1) to align the self-tapping sheet metal screws for seal removal.

Use the replacer plate (1) to position the screws.

Screw the self-tapping sheet metal screws (2) into the seal.


Install the T-bar puller, Part Number ST-647 or equivalent, onto the replacer plate.

Turn the forcing screw of the T-bar puller to remove the replacer plate and crankshaft seal from the crankshaft.

Last Modified:  28-Jun-2010