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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Mechanical - 3.6L (5 Of 5)) >> Off-Vehicle Repair Instructions (3 Of 3) >> Secondary Camshaft Drive Chain Installation - Left Side (Fourth Design) >> Installation

Secondary Camshaft Drive Chain Installation - Left Side (Fourth Design): Installation

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    Fig 1: Identifying Special Tools - EN 46105-1
    GM946116Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: There should be no need to rotate the camshaft more than 10 degrees. Using the hex cast into the camshaft rotate the camshaft in order to install the EN 46105  . See Special Tools .
  1. Install the EN 46105-1 onto the rear of the left camshafts.
  2. IMPORTANT: All camshafts must be locked in place before installation of any camshaft drive chains.
  3. Ensure that the EN 46105-1 is fully seated onto the camshafts.
  4. Fig 2: View Of Stage One Timing Mark On Oil Pump Cover & Sprocket Timing Mark
    GM1866950Courtesy of GENERAL MOTORS CORP.
  5. Ensure the crankshaft is in the stage one timing position with the crankshaft sprocket timing mark (1) aligned to the stage one timing mark on the oil pump cover (2) using the EN-48589  . See Special Tools . Refer to Camshaft Timing Drive Chain Alignment Diagram (Third Design) or Camshaft Timing Drive Chain Alignment Diagram (Fourth Design) - Stage One.
  6. Fig 3: Identifying Secondary Camshaft Drive Chain
    GM1852354Courtesy of GENERAL MOTORS CORP.
  7. Install the left secondary camshaft drive chain.
  8. Fig 4: View Of Timing Camshaft Drive Chain Link & Alignment Access Hole
    GM1852356Courtesy of GENERAL MOTORS CORP.
  9. Place the left secondary camshaft drive chain around the inner sprocket of the left camshaft intermediate drive chain idler with the timing camshaft drive chain link (1) aligned to the alignment access hole (2) made in the left camshaft intermediate drive chain idler outer sprocket.
  10. Fig 5: View Of Camshaft Drive Chain Links
    GM1852357Courtesy of GENERAL MOTORS CORP.
  11. Wrap the secondary camshaft drive chain around both left actuator drive sprockets.
  12. Ensure there are 10 links (1) between the timing camshaft drive chain links for the camshaft position actuator sprockets.
  13. Fig 6: View Of Exhaust Camshaft & Timing Chain Marks
    GM1852360Courtesy of GENERAL MOTORS CORP.
  14. Align the left exhaust camshaft position actuator sprocket alignment circle mark (2) with the timing camshaft drive chain link (1).
  15. Fig 7: View Of Intake Camshaft & Timing Chain Marks
    GM1852362Courtesy of GENERAL MOTORS CORP.
  16. Align the left intake camshaft position actuator sprocket alignment circle mark (1) with the timing camshaft drive chain link (2).
  17. Fig 8: View of Timing Chain
    GM1852363Courtesy of GENERAL MOTORS CORP.
  18. There will be 22 links (1) between the left camshaft intermediate drive chain idler timing secondary camshaft drive chain link and each left camshaft position actuator sprocket timing secondary camshaft drive chain link.