LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 8.1L) >> 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 variant/trim than selected.
    Fig 1: View Of Crankshaft & Camshaft Sprockets Aligned
    GM1150730Courtesy of GENERAL MOTORS CORP.
  1. Clean the camshaft timing components in solvent.
  2. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  3. Dry the components with compressed air.
  4. Inspect the camshaft timing chain for binding or wear.
  5. Fig 2: Identifying Damaged Sprocket Teeth
    GM188097Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: If the sprocket or sprockets must be replaced, replace both sprockets to ensure that timing chain centerline alignment is maintained.
  6. Inspect the camshaft and crankshaft sprockets for the following conditions:
    • Worn teeth (1)
    • Damaged teeth (2)
    • Chipped teeth (3)
    • Uneven wear on one edge of the teeth
    • Worn valleys between the sprocket teeth
    • Crankshaft sprocket keyway for wear