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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Mechanical - 4.6L (LH2) - 1 Of 5) >> On-Vehicle Repair Instructions (Part 1) >> Secondary Camshaft Drive Chain Shoe Replacement - Left Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Left Secondary Timing Chain Tensioner & Bolts
    GM1276759Courtesy of GENERAL MOTORS CORP.
  1. Remove the left secondary camshaft tensioner. Refer to Secondary Camshaft Drive Chain Tensioner Replacement - Left Side .
  2. Remove the left camshaft position actuator housing. DO NOT remove the camshaft actuator solenoids from the housing. Refer to Camshaft Position Actuator Housing Replacement - Left Side .
  3. Fig 2: Identifying Camshaft Sprockets & Related Components
    GM1276768Courtesy of GENERAL MOTORS CORP.
  4. Using the J 39946  , rotate the crankshaft until both camshaft position actuator timing marks (5, 7) are at the top of their rotation.
  5. Fig 3: Identifying EN 46328 Cam Tool
    GM1275659Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Camshaft Holding Tool Caution .
  6. Install the EN 46328  (1) to the camshafts (2).
  7. Fig 4: Marking Timing Chain Link
    GM1275729Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The secondary timing chain has black links that are used for alignment when the primary and secondary timing gear and chain assemblies are being installed together. IT IS NOT NECESSARY for the black chain links to be aligned with the camshaft actuator timing marks when the secondary chain and gear components are being serviced separately.
  8. Use a paint stick to create a mark (1) on the timing chain link adjacent to each camshaft position actuator timing mark (2).
  9. Use a paint stick to create a mark on a primary chain link and intermediate primary chain sprocket tooth adjacent to the primary chain link.
  10. Fig 5: Holding Camshaft
    GM1275675Courtesy of GENERAL MOTORS CORP.
  11. Use an open end wrench on the hex cast into the left intake camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
  12. Fig 6: View Of Camshaft Oil Control Valve
    GM1261666Courtesy of GENERAL MOTORS CORP.
  13. Loosen and remove the left intake oil control valve.
  14. Slide the left intake camshaft actuator off of the camshaft, disengage the sprocket teeth from the secondary timing chain, and remove the actuator.
  15. Fig 7: View Of Left Secondary Camshaft Drive Timing Shoe
    GM1276762Courtesy of GENERAL MOTORS CORP.
  16. Remove the left secondary camshaft drive timing chain shoe bolt.
  17. Remove the left secondary camshaft drive timing shoe.
  18. Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection .