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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1219 (Engine Mechanical - 4.2L 6-Cylinder (Unit Repair)) >> Repair Instructions >> Timing Chain And Sprockets Removal

Timing Chain And Sprockets Removal

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the top chain guide bolts.
  2. Remove the top chain guide.
    3. Fig 1: Removing Top Chain Guide
    G01706486Courtesy of GENERAL MOTORS CORP.
  3. Remove the exhaust camshaft position actuator bolt.
  4. Remove the exhaust camshaft position actuator.
    5. Fig 2: Removing Exhaust Camshaft Position Actuator
    G01706487Courtesy of GENERAL MOTORS CORP.
  5. Remove the intake camshaft sprocket bolt.
  6. Remove the intake camshaft sprocket.
    7. Fig 3: Removing Timing Chain And Sprockets
    G01706488Courtesy of GENERAL MOTORS CORP.
  7. Remove the timing chain.
  8. Remove the crankshaft sprocket.
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