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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1392 (Engine Mechanical - 4.3L) >> Repair Instructions - Off Vehicle >> Timing Chain and Sprocket Installation >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Installing Crankshaft Balancer Key
    GM387766Courtesy of GENERAL MOTORS CORP.
  1. Install the crankshaft balancer key into the crankshaft keyway.

    The crankshaft balancer key should be parallel to the crankshaft or with a slight incline.

  2. Fig 2: Installing The Crankshaft Sprocket Using J 5590
    GM480574Courtesy of GENERAL MOTORS CORP.
  3. Align the keyway of the crankshaft sprocket with the crankshaft balancer key.
  4. WARNING: Refer to Safety Glasses Warning .
  5. Use the J 5590:  installer in order to install the crankshaft sprocket.
  6. Fig 3: Camshaft Sprocket And Camshaft Timing Chain
    GM1883514Courtesy of GENERAL MOTORS CORP.
  7. Rotate the crankshaft until the crankshaft sprocket alignment mark is at the 12 o'clock position.
  8. NOTE: Install the camshaft sprocket with the alignment mark at the 6 o'clock position.
  9. Install the camshaft sprocket and the camshaft timing chain.
  10. Fig 4: View Of Sprockets & Chain
    GM1883515Courtesy of GENERAL MOTORS CORP.
  11. Look to ensure that the crankshaft sprocket is aligned at the 12 o'clock position and camshaft sprocket is aligned at the 6 o'clock position.
  12. Fig 5: Identifying Camshaft Sprocket & Bolts
    GM1883513Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
    NOTE: Do not use a hammer to install the camshaft sprocket onto the camshaft. To do so may dislodge the expansion cup plug, camshaft rear bearing hole.
  13. Install camshaft sprocket bolts and tighten to 25 N.m (18 lb ft).
  14. Fig 6: View Of Timing Chain Tensioner Bracket, Bolt & Shoe
    GM1312893Courtesy of GENERAL MOTORS CORP.
  15. Install the timing chain tensioner bracket and bolt (227 and 228). Tighten the timing chain tensioner bracket bolt to 12 N.m (106 lb in).
  16. NOTE: The timing chain tensioner shoe snaps onto the tensioner bracket. Ensure that the shoe is fully seated before proceeding.
  17. Install the timing chain tensioner shoe (229) using an upwards motion.
  18. Fig 7: Installing Crankshaft Position Sensor Reluctor Ring
    GM1883517Courtesy of GENERAL MOTORS CORP.
  19. Install the crankshaft position sensor reluctor ring.
    1. Align the keyway on the crankshaft position sensor reluctor ring with the crankshaft balancer key in the crankshaft.
    2. Use the J 5590:  installer in order to push the crankshaft position sensor reluctor ring onto the crankshaft until completely seated against the crankshaft sprocket.