GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Lumina Ute 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Crankshaft Rear Oil Seal Installation

Tools Required

J 41479 Crankshaft Rear Oil Seal Installer

    Important: 

       • Do not lubricate the oil seal (1) inside diameter (ID) of the crankshaft surface.
       • Do not reuse the crankshaft rear oil seal (1).


    Object Number: 1950880 Size: SH
  1. Lubricate the outside diameter (OD) of the oil seal (1) with clean engine oil.

    2. DO NOT allow oil or other lubricants to contact the seal surface.

  2. Lubricate the rear cover (2) oil seal bore with clean engine oil.

    3. DO NOT allow oil or other lubricants to contact the crankshaft surface.


    Object Number: 1950877 Size: SH
  3. Install the J 41479  (3) cone and bolts onto the rear of the crankshaft.

    4. Important:  Do not over tighten the bolts.

  4. Tighten the bolts.
  5. Install the rear oil seal (1) onto the J 41479  (3) and push the seal to the rear cover bore (2).
  6. Thread the J 41479  (3) threaded rod into the tapered cone until the J 41479  (3) contacts the rear oil seal (1).
  7. Align the rear oil seal (1) onto the J 41479  (3).
  8. Rotate the handle of the J 41479  (3) clockwise until the rear oil seal (1) enters and bottoms into the rear cover bore (2).
  9. Remove the J 41479  (3).