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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Mechanical - 4.6L - 1 Of 4) >> On-Vehicle Repair Instructions (1 Of 2) >> Secondary Camshaft Drive Chain Replacement - Right Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the right secondary camshaft drive chain tensioner. Refer to Secondary Camshaft Drive Chain Tensioner Replacement - Right Side .
  2. Remove the camshaft position (CMP) sensor. Refer to Camshaft Position Sensor Replacement .
  3. Remove the right camshaft cover. Refer to Camshaft Cover Replacement - Right Side .
    4. Fig 1: Ensuring Camshaft Sprocket Drive Pins Are At Top Of Their Rotation
    GM517164Courtesy of GENERAL MOTORS CORP.
  4. Ensure both camshaft sprocket drive pins are at the top of their rotation.
    5. Fig 2: Using Camshaft Holding Tool
    GM650538Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to CAMSHAFT HOLDING TOOL CAUTION .
  5. Install the J 44212  over the camshafts. See Special Tools .
    6. Fig 3: View Of Mechanics Wire, Right Secondary Camshaft Drive Chain Shoe & Front Cover Bolt
    GM749349Courtesy of GENERAL MOTORS CORP.
  6. Remove the mechanics wire (1) supporting the right secondary camshaft drive chain shoe (3).
  7. Remove the engine front cover bolt (2) from the front of the engine.
    8. Fig 4: Securing Camshaft Using An Open End Wrench
    GM749353Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Torque Reaction Against Timing Drive Chain Notice .
  8. Use an open end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when removing the camshaft sprocket bolt.
    9. Fig 5: Identifying Right Exhaust Camshaft Sprocket Bolt
    GM650548Courtesy of GENERAL MOTORS CORP.
  9. Remove the right exhaust camshaft sprocket bolt.
  10. Slide the right exhaust camshaft sprocket off of the camshaft and remove the right secondary camshaft drive chain from the camshaft sprocket teeth.
    11. Fig 6: View of Right Secondary Camshaft Drive Chain
    GM685335Courtesy of GENERAL MOTORS CORP.
  11. Lift the right secondary camshaft drive chain from the camshaft intermediate drive shaft sprocket teeth.
  12. Remove the right secondary camshaft drive chain from the engine.
  13. Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection .
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