Camshaft Bearing Removal

Tools Required 

J 33049  Camshaft Bearing Service Set

1. Remove the rear camshaft plug, if not previously removed.

   Insert a long bar through the front of the engine and drive the plug out of the rear bore.

   Fig 1: Rear Camshaft Plug

   Courtesy of GENERAL MOTORS CORP.

   Important:  A loose camshaft bearing may be caused by an enlarged, out-of-round, or damaged engine block bearing bore.

2. Prior to bearing removal, inspect the camshaft bearings for loose fit in the engine block bearing bores (positions 1-5).
   Fig 2: Engine Block Bearing Bores

   Courtesy of GENERAL MOTORS CORP.
3. Select the expanding driver (4-8) and washer (2 or 3) from the J 33049  .
4. Assemble the J 33049  .
   Fig 3: J 33049 Components

   Courtesy of GENERAL MOTORS CORP.

   Important:  Remove the inner bearings (positions 2, 3, and 4) first. The outer bearings (positions 1 and 5) serve as a guide for the J 33049  .

5. Insert the J 33049  through the front of the engine block and into the bearing.
6. Tighten the expander assembly nut until snug.
7. Push the guide cone into the front camshaft bearing (position 1) to align the J 33049  .
8. Drive the inner bearings (positions 2, 3, and 4) from their block bores.
   Fig 4: Removing Inner Bearings Using J 33049

   Courtesy of GENERAL MOTORS CORP.
9. Assemble the J 33049  handle, expanding driver, and washer.
10. Insert the J 33049  into the outer camshaft bearings.
11. Drive the outer bearings from the bore.
    Fig 5: Removing Outer Bearings Using J 33049

    Courtesy of GENERAL MOTORS CORP.