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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 257 (Engine Mechanical - 4.0L (On-Vehicle)) >> Repair Instructions >> Secondary Camshaft Drive Chain Shoe Replacement - Left >> Installation Procedure

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. Position the left secondary camshaft drive chain shoe in through the top of the cylinder head.
    Fig 1: Installing Left Secondary Camshaft Drive Chain Shoe
    G01819365Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer toFASTENER NOTICE .
  2. Install 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 2: Installing Left Secondary Camshaft Drive Chain Shoe Bolt
    G01819366Courtesy of GENERAL MOTORS CORP.
  3. Install the left secondary camshaft drive chain shoe access plug (3) located in the cylinder head. Ensure the O-ring seal is attached to the access plug.

    Tighten 

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

    Fig 3: Installing Left Secondary Camshaft Drive Chain Shoe Access Plug
    G01819367Courtesy of GENERAL MOTORS CORP.
  4. Install the left intake camshaft sprocket into the left secondary camshaft drive chain.
  5. Install the left intake camshaft sprocket onto the camshaft. The camshaft sprocket notch marked LI (left intake) engages the intake camshaft pin.
    Fig 4: Installing Left Intake Camshaft Sprocket Into Left Secondary Camshaft Drive Chain.
    G01819368Courtesy of GENERAL MOTORS CORP.
  6. Use an open end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when tightening the camshaft sprocket bolt.
    Fig 5: Using Open End Wrench On Hex Cast
    G01819369Courtesy of GENERAL MOTORS CORP.
  7. Install the left intake camshaft sprocket bolt.

    Tighten 

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

    Fig 6: Install Left Intake Camshaft Sprocket Bolt
    G01819370Courtesy of GENERAL MOTORS CORP.
  8. Remove the J 44212 from the camshafts.
    9. Fig 7: Removing J 44212
    G01819371Courtesy of GENERAL MOTORS CORP.
  9. Install the left camshaft cover. Refer to Camshaft Cover Replacement - Left .
  10. Install the left secondary camshaft drive chain tensioner. Refer to Secondary Camshaft Drive Chain Tensioner Replacement - Left .
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