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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 637 (Engine Mechanical - 3.5L (Unit Repair)) >> Repair Instructions >> Camshaft Timing Drive Components Cleaning and Inspection >> Visual Inspection

Visual Inspection

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the camshaft and crankshaft sprockets for damage. The camshaft and crankshaft sprockets are not repairable. If a camshaft and/or crankshaft sprocket is damaged, the camshaft and/or crankshaft sprocket must be replaced.
  2. Inspect the timing guides and shoe for wear, cracks or damage. The timing guides and shoe are not repairable. If a timing guide or shoe is worn cracked or damaged, the timing guide or shoe must be replaced.
  3. Inspect the timing chain tensioners for damage. The timing chain tensioners are not repairable. If a timing chain tensioner is damaged, the timing chain tensioner must be replaced.
  4. Inspect all bolts for damage. If a bolt is damaged, the bolt must be replaced.
  5. Inspect the timing chains for damage. The timing chains are not repairable. If a timing chain is damaged, the timing chain must be replaced.