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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 419 (Engine Mechanical - 3.5L (On-Vehicle)) >> Repair Instructions >> Primary Camshaft Drive Chain Guide Replacement - Lower >> 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 primary camshaft drive chain tensioner. Refer to Primary Camshaft Drive Chain Tensioner Replacement .
  2. Transfer the chain slack from the primary camshaft drive chain tensioner area to the primary camshaft drive chain lower guide area by moving the chain links counterclockwise around the crankshaft sprocket.
  3. Remove the chain guide access plug (4) located in the cylinder head. Note the O-ring seal on the access plug.
    Fig 1: Removing Chain Guide Access Plugs
    G01816823Courtesy of GENERAL MOTORS CORP.
  4. Remove the primary camshaft drive chain lower guide bolts.
  5. Remove the primary camshaft drive chain lower guide in the following order:
    1. 5.1. Rotate the guide clockwise.
    2. 5.2. Pull the guide downward through the front cover area.
    Fig 2: Removing Primary Camshaft Drive Chain Lower Guide
    G01816824Courtesy of GENERAL MOTORS CORP.
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