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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical - 4.6L (3 Of 5)) >> Off-Vehicle Repair Instructions (1 Of 3) >> Secondary Camshaft Drive Chain Removal - Right Side

Secondary Camshaft Drive Chain Removal - Right Side

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Cylinder Head Core Hole Plugs
    GM1564247Courtesy of GENERAL MOTORS CORP.
  1. Remove the cylinder head core hole plugs located in the cylinder heads. Ensure the O-ring seal is on each access plug.
    2. Fig 2: View Of Right Secondary Drive Chain Tensioner
    GM1564248Courtesy of GENERAL MOTORS CORP.
  2. Remove the right secondary drive chain tensioner bolts.
  3. Remove the right secondary camshaft drive chain tensioner allowing it to expand as you remove it.
    4. Fig 3: View Of Upper Right Secondary Camshaft Drive Chain Guide Bolt
    GM1564249Courtesy of GENERAL MOTORS CORP.
  4. Remove the upper right secondary camshaft drive chain guide bolt.
    5. Fig 4: Identifying Camshaft Sprocket
    GM1564250Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Torque Reaction Against Timing Drive Chain Notice in Cautions and Notices.
  5. Remove the camshaft sprocket bolts from the camshafts. Use an open wrench on the hex cast near the front of each camshaft to prevent engine rotation when loosening the camshaft sprocket bolts.
  6. Lift the secondary camshaft drive chain from the camshaft sprocket teeth and slide the camshaft sprockets off of the camshafts.
    7. Fig 5: View of Right Secondary Camshaft Drive Chain
    GM685335Courtesy of GENERAL MOTORS CORP.
  7. Remove the right secondary camshaft drive chain.
    8. Fig 6: Identifying Right Secondary Camshaft Drive Chain Shoe Bolt
    GM685338Courtesy of GENERAL MOTORS CORP.
  8. Remove the right secondary camshaft drive chain shoe bolt.
    9. Fig 7: View of Right Secondary Camshaft Drive Chain Shoe
    GM685343Courtesy of GENERAL MOTORS CORP.
  9. Remove the right secondary camshaft drive chain shoe.
    10. Fig 8: Identifying Lower Right Secondary Camshaft Drive Chain Guide Bolt
    GM685347Courtesy of GENERAL MOTORS CORP.
  10. Remove the lower right secondary camshaft drive chain guide bolt.
    11. Fig 9: View of Right Secondary Camshaft Drive Chain Guide
    GM685348Courtesy of GENERAL MOTORS CORP.
  11. Remove the right secondary camshaft drive chain guide.
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