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Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply a liberal amount of lubricant GM P/N 12345001 or equivalent to the roller pivot pocket (2) and valve slot areas (1) of the camshaft followers.
    Fig 1: Identifying Camshaft Lubrication Areas
    G01819448Courtesy of GENERAL MOTORS CORP.

    Important:  The follower must be positioned squarely on the valve tip so that the full width of the roller will completely contact the camshaft lobe. If the followers are being reused you must put them back in their original location.

  2. Place the camshaft followers in position on the valve tip and the stationary hydraulic lash adjusters (SHLA) (1). The rounded head of the follower goes on the SHLA, while the flat end goes on the valve tip.
    Fig 2: Installing Camshaft Followers
    G01819449Courtesy of GENERAL MOTORS CORP.
  3. Clean the camshaft carriers with a clean, lint-free cloth.
  4. Apply a liberal amount of lubricant GM P/N 12345001 or equivalent to the camshaft carriers, camshaft lobes (1) and the camshaft journals (2).
  5. Place the camshaft in the camshaft carriers with the camshaft sprocket drive pins near the top of their rotation and the camshaft lobes in a neutral position. The camshafts can be identified by a stamping near the rear journal. For example: L-EXH is defined as Left bank Exhaust.
    Fig 3: Installing Camshafts
    G01819450Courtesy of GENERAL MOTORS CORP.
  6. Observe the markings on the camshaft bearing caps. Each camshaft bearing cap is marked in order to identify its location. The markings have the following meanings:
    • The arrow should point to the front of the engine.
    • The number indicates the position from the front of the engine.
    • The "E" indicates the exhaust camshaft.
    • The "I" indicates the Intake camshaft.
    Fig 4: Identifying Camshaft Bearing Cap Markings
    G01819451Courtesy of GENERAL MOTORS CORP.
  7. Apply a liberal amount of lubricant GM P/N 12345001 or equivalent to the camshaft bearing caps.
  8. Install the camshaft bearing caps according to the identification marks.
    Fig 5: Installing Camshaft Bearing Caps
    G01819452Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer toFASTENER NOTICE .
  9. Install the camshaft bearing cap bolts in sequence.

    Tighten 

    1. 9.1. Alternately hand tighten the camshaft bearing cap bolts a few turns at a time until all caps are fully seated.
    2. 9.2. Tighten the camshaft bearing cap bolts to 5 N.m (44 in lbs).
    3. 9.3. Tighten the camshaft bearing cap bolts an additional 30 degrees using the J 36660-A. 
    Fig 6: Identifying Camshaft Bearing Cap Bolt Tightening Sequence
    G01819453Courtesy of GENERAL MOTORS CORP.
  10. Align the camshafts.
    WARNING: The camshaft holding tools must be installed on the camshafts to prevent camshaft rotation. When performing service to the valve train and/or timing components, valve spring pressure can cause the camshafts to rotate unexpectedly and can cause personal injury
  11. Install the J 44212  over the camshafts.
    Fig 7: Installing J 44212
    G01819454Courtesy of GENERAL MOTORS CORP.

    Important:  Ensure the camshaft sprockets properly engage the camshaft sprocket drive pins and camshafts.

  12. Slide the intake and exhaust camshaft sprockets off the pins of the J 44213  and onto the pins of the camshafts.
    Fig 8: Slide Intake & Exhaust Camshaft Sprockets Off J 44213 Pins
    G01819455Courtesy of GENERAL MOTORS CORP.
  13. Tighten the left secondary camshaft drive chain shoe bolt.

    Tighten 

    Tighten the secondary camshaft drive chain shoe bolt to 25 N.m (18 ft lbs).

    Fig 9: Tightening Secondary Camshaft Drive Chain Shoe Bolt
    G01819456Courtesy of GENERAL MOTORS CORP.
  14. Install the left secondary camshaft drive chain shoe access plug.

    Tighten 

    Tighten the secondary camshaft drive chain shoe access plug to 4.5 N.m (40 in lbs).

    Fig 10: Install Left Secondary Camshaft Drive Chain Shoe Access Plug
    G01819457Courtesy of GENERAL MOTORS CORP.
  15. Remove the J 44213  (1) from the front rail of the cylinder head, while carefully holding the camshaft sprockets against the camshafts.
    Fig 11: Removing J 44213
    G01819458Courtesy of GENERAL MOTORS CORP.
  16. Use an open end wrench on the hex cast into the camshafts in order to prevent the camshafts from rotating when tightening the camshaft sprocket bolts.
    Fig 12: Using Open End Wrench On Hex Cast
    G01819459Courtesy of GENERAL MOTORS CORP.
  17. Install the camshaft sprocket bolts.

    Tighten 

    Tighten the camshaft sprocket bolts to 120 N.m (89 ft lbs).

    Fig 13: Installing Camshaft Sprocket Bolts
    G01819460Courtesy of GENERAL MOTORS CORP.
  18. Verify the camshaft sprocket alignment.
    Fig 14: Identifying Sprocket Drive Pins At Top Rotation
    G01819461Courtesy of GENERAL MOTORS CORP.
    19. Fig 15: Removing J 44212
    G01819462Courtesy of GENERAL MOTORS CORP.
  19. Remove the J 44212  from the camshafts.
  20. Install the left camshaft cover. Refer to Camshaft Cover Replacement - Left .
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