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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 Tensioner Replacement - Right Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Tensioner Shoe & Ratchet Lever
    GM749346Courtesy of GENERAL MOTORS CORP.
  1. Collapse the right secondary camshaft chain tensioner using the following procedure:
    1. Rotate the ratchet release lever (2) counterclockwise and hold.
    2. Collapse the tensioner shoe (1) and hold.
    3. Release the ratchet lever (2).
  2. Slowly release the pressure on the shoe (1), until the ratchet lever (2) moves to the first detent and a "click" is heard and felt.
  3. Collapse the tensioner shoe (1) and hold.
  4. Fig 2: Locking Tensioner Shoe In Collapsed Position
    GM749348Courtesy of GENERAL MOTORS CORP.
  5. Insert a pin through the hole in the release lever in order to lock the tensioner shoe in the collapsed position.
  6. Fig 3: View Of Right Secondary Timing Chain Tensioner & Bolts
    GM1276761Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
    IMPORTANT: Ensure the tensioner release lever is facing outward.
  7. Install the right secondary camshaft drive chain tensioner and retaining bolts.

    Tighten:  Tighten the secondary camshaft drive chain tensioner bolts to 25 N.m (18 lb ft).

  8. Remove the pin holding the tensioner to tighten any slack in the timing chain.
  9. Fig 4: Aligning Camshaft Sprocket & Timing Chain Paint Marks
    GM1275693Courtesy of GENERAL MOTORS CORP.
  10. Inspect the two paint marks (1, 3) created previously to ensure they remain aligned with the timing marks (2, 4) on the actuator.
  11. Fig 5: View Of Mechanics Wire, Right Secondary Camshaft Drive Chain Shoe & Front Cover Bolt
    GM749349Courtesy of GENERAL MOTORS CORP.
  12. Remove the mechanics wire (1) supporting the right secondary camshaft drive chain shoe (3).
  13. Remove the engine front cover bolt (2) from the front of the engine.
  14. Install the engine oil pump. Refer to Oil Pump Replacement .
  15. Fig 6: Identifying EN 46328 Cam Tool
    GM1275659Courtesy of GENERAL MOTORS CORP.
  16. Remove the EN 46328  (1).
  17. Install the right camshaft cover. Refer to Camshaft Cover Replacement - Right Side .