LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 783 (Engine Mechanical - 4.3L (Unit Repair)) >> Repair Instructions >> Camshaft Bearing Installation

Camshaft Bearing Installation

WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required 

J 33049  Camshaft Bearing Service Kit

Important:  When installing the camshaft bearings, always look in order to ensure that the camshaft bearing lubrication hole is located above the 3 o'clock position (1) or the 9 o'clock position (2). The proper positioning of the camshaft bearing lubrication hole is in order to ensure the best lubrication of the engine camshaft journals.

Fig 1: Ensuring Camshaft Bearing Lubrication Hole Is In Proper Position
G01689703Courtesy of GENERAL MOTORS CORP.
  1. Assemble the J 33049  handle (10), the expanding driver (4-8), the washer (2 or 3), and the expander assembly (15).
    Fig 2: Assembling J 33049
    G01689704Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to SAFETY GLASSES CAUTION .

    Important:  The camshaft bearings vary in size. When ordering the new camshaft bearings, be sure to order the correct camshaft bearings for the application to be serviced.

    Always install the camshaft outer bearings #1 and #4 first. The camshaft outer bearings serve as a guide for the J 33049  and help center the camshaft inner bearings during the installation process.

  2. Install the NEW camshaft outer bearings #4 and #1.
    1. 2.1. Install the NEW camshaft outer bearing #4 onto the J 33049  expander assembly.
    2. 2.2. Tighten the J 33049  expander assembly nut until snug.
    3. 2.3. Align the lubrication hole of the camshaft outer bearing #4 above the 3 o'clock position or the 9 o'clock position of the camshaft outer bearing bore #4 at the rear of the engine block.
    4. 2.4. Drive the camshaft outer bearing #4 into the camshaft outer bearing bore
    5. #4 at the rear of the engine block.
    6. 2.5. Loosen the J 33049  expander assembly nut.
    7. 2.6. Remove the camshaft outer bearing #4 from the J 33049  expander assembly.
    8. 2.7. Install the NEW camshaft outer bearing #1 onto the J 33049  expander assembly.
    9. 2.8. Tighten the J 33049  expander assembly nut until snug.
    10. 2.9. Align the lubrication hole of the camshaft outer bearing #1 above the 3 o'clock position or the 9 o'clock position of the camshaft outer bearing bore #1 at the front of the engine block.
    11. 2.10. Drive the camshaft outer bearing #1 into the camshaft outer bearing bore #1 at the front of the engine block.
    12. 2.11. Loosen the J 33049  expander assembly nut.
    13. 2.12. Carefully slide the J 33049  into the engine block until the J 33049  expander assembly is positioned between the camshaft inner bearing bores.
    Fig 3: Installing Camshaft Outer Using J 33049
    G01689705Courtesy of GENERAL MOTORS CORP.
  3. Install the NEW camshaft inner bearings #3 and #2.
    1. 3.1. Install the NEW camshaft inner bearing #3 onto the J 33049  expander assembly.
    2. 3.2. Tighten the J 33049  expander assembly nut until snug.
    3. 3.3. Align the lubrication hole of the camshaft inner bearing #3 above the 3 o'clock position or the 9 o'clock position of the camshaft inner bearing bore #3 of the engine block.
    4. 3.4. Push the J 33049  guide cone into the camshaft front bearing bore #1 in order to align the J 33049  .
    5. 3.5. Drive the camshaft inner bearing #3 into the camshaft inner bearing bore #3.
    6. 3.6. Loosen the J 33049  expander assembly nut.
    7. 3.7. Carefully slide the J 33049  until the J 33049  expander assembly is positioned between the camshaft inner bearing bore #2 and the camshaft outer bearing bore #1.
    8. 3.8. Install the NEW camshaft inner bearing #2 onto the J 33049  expander assembly.
    9. 3.9. Tighten the J 33049  expander assembly nut until snug.
    10. 3.10. Align the lubrication hole of the camshaft inner bearing #2 above the 3 o'clock position or the 9 o'clock position of the camshaft inner bearing bore #2 of the engine block.
    11. 3.11. Push the J 33049  guide cone into the camshaft front bearing bore #1 in order to align the J 33049  .
    12. 3.12. Drive the camshaft inner bearing #2 into the camshaft inner bearing bore #2.
    13. 3.13. Loosen the J 33049  expander assembly nut.
  4. Carefully remove the J 33049  from the engine block.
scientia non olet · About LEMON Manuals