GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 22888-D Side Bearing Remover Kit

Removal Procedure

  1. Tilt the cab. Refer to Cab Tilting .
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Remove the glow plugs. Refer to Glow Plug Replacement .
  4. Remove the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement .
  5. Rotate the engine to top dead center and align the timing marks on the camshaft.
  6. Remove the fuel injector harness assembly.
  7. Important: Do not remove the rocker arm shaft bracket bolts from the valve rocker arm shaft assembly.

  8. Remove the valve rocker arm shaft assembly.

  9. Object Number: 736649  Size: SH
  10. Loosen the camshaft main bearing caps evenly starting from the outer nut moving to the inner nut.
  11. Remove the camshaft assembly with the gear.
  12. Using the J 22888-D on the gear, remove the camshaft gear.
  13. Important: If the camshaft and the gear are to be reused, inspect the camshaft for excessive wear and the camshaft gear for chipped or broken teeth.

  14. Measure the lobes and bearing surfaces of the camshaft for excessive wear.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 736649  Size: SH
  1. Install the camshaft gear bolt and gear to the camshaft.
  2. Tighten
    Tighten the camshaft gear bolt to 142N·m (105 lb ft).


    Object Number: 736669  Size: MH
  3. Install the camshaft, bearing caps and bolts to the cylinder head.
  4. Tighten
    Tighten the camshaft bearing cap bolts to 27 N·m (20 lb ft).

  5. Install the valve rocker arm shaft assembly.
  6. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement .
  7. Install the fuel injector harness assembly.
  8. Install the glow plugs. Refer to Glow Plug Replacement .
  9. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  10. Lower the cab.