Camshaft Bearing Installation

Tools Required 

J 33049  Camshaft Bearing Service Set

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

1. Prior to bearing removal, inspect the camshaft bearings for loose fit in the engine block bearing bores.
2. Repair or replace the components as required.
   Fig 1: Inspecting Camshaft Bearings

   Courtesy of GENERAL MOTORS CORP.
3. Select the expanding driver (4-8) and washer (2 or 3) from the tool usage information.
4. Assemble the tool.
   Fig 2: Identifying Special Tool Components

   Courtesy of GENERAL MOTORS CORP.
5. Insert the J 33049  through the front of the engine block and to the bearing bore.
6. Install the new bearing onto the tool.
7. Tighten the expander assembly nut until snug.
8. Push the guide cone into the front camshaft bearing to align the tool.
9. Properly align the oil hole in the bearing with the oil gallery in the engine block.
10. Drive the bearing into the block bore.
    Fig 3: Driving Bearing Into Block Bore

    Courtesy of GENERAL MOTORS CORP.

    Important:  To install the front camshaft bearing, operate the tool from the rear of the block using the guide cone in the rear camshaft bearing bore.

11. Repeat the above procedures to install the remaining bearings.
12. Check the installed bearing for proper alignment of the oil gallery holes.