GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 25022 End Play Fixture Adapter (245 mm)
    • J 34725 End Play Fixture Adapter (298 mm)
    • J 24773-A Oil Pump Remover and End Play Checking Fixture
    • J 8001 Dial Indicator Set
    • J 25025-7A Dial Indicator Mounting Post

    Object Number: 7505  Size: SH
  1. Install an end play fixture adapter.
  2. • Use J 25022 for a 245 mm turbine shaft (1).
    • Use J 34725 for a 298 mm turbine shaft (2).

    Object Number: 7506  Size: SH
  3. Install the J 24773-A .

  4. Object Number: 7507  Size: SH
  5. Remove an oil pump bolt.
  6. Install J 25025-7A (or a 278 mm or 11 in bolt) and lock nut.
  7. Install J 8001 .

  8. Object Number: 7508  Size: SH
  9. Set the J 8001 to zero.
  10. Pull up on J 24773-A .
  11. The end play should be 0.13-0.92 mm (0.005-0.036 in).
  12. The selective washer (616) which controls the end play, is located between the input housing (621) and the thrust bearing (615) on the oil pump hub. If the dial indicator shows no end play, the selective washer (616) and thrust bearing (615) may have been misassembled.