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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 Tensioner Replacement - Right >> Removal Procedure

Removal 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. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  2. Align the primary timing marks (1) using the J 39946. 
    Fig 1: Identifying Primary Timing Marks
    G01819351Courtesy of GENERAL MOTORS CORP.
  3. Install a engine front cover bolt (2) into the front of the engine.

    Important:  Securing the right secondary camshaft drive chain shoe will prevent the right camshaft drive sprocket teeth from skipping on the right secondary timing chain.

  4. Wrap mechanics wire (1) tightly around both the right secondary camshaft drive chain shoe (3) and the front cover bolt (2).
    Fig 2: Wrapping Mechanics Wire Around Right Secondary Camshaft Drive Chain Shoe & Front Cover Bolt
    G01819352Courtesy of GENERAL MOTORS CORP.
  5. Remove the two bolts attaching the right secondary camshaft drive chain tensioner to the engine block.
  6. Remove the right secondary camshaft drive chain tensioner, allowing the tensioner to expand as you remove it.
    Fig 3: Removing Right Secondary Camshaft Drive Chain Tensioner
    G01819353Courtesy of GENERAL MOTORS CORP.
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