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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1877 (Engine Mechanical - 2.4L (Lat)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Timing Chain and Sprockets Cleaning and Inspection

Timing Chain and Sprockets Cleaning and Inspection

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Timing Chain & Guides
    GM1594340Courtesy of GENERAL MOTORS CORP.
  1. Inspect the timing chain guides for cracking or wear.
  2. Replace the timing chain guides if wear exceeds 1.12 mm (0.045 in) depth on the chain guide surface.
  3. Inspect the timing chain tensioner shoe for wear.
  4. Replace the timing chain tensioner shoe if wear exceeds 1.12 mm (0.045 in) depth on the chain guide surface.
  5. Inspect the timing chain and actuators for wear.
  6. Inspect the camshaft actuator faces for signs of movement.
  7. Inspect the camshaft actuator teeth and chain for signs of excessive wear, chipping, or seizure of the timing chain links.
  8. Inspect the oil nozzle body for collapse or cracks at the bolt boss. Discard and replace the oil nozzle body if it is damaged.
  9. Inspect the timing chain tensioner for the scoring or free movement.
  10. Inspect the timing chain washer and O-ring for damage. If damaged, replace the timing chain tensioner.