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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Engine Mechanical - 4.6L (5 Of 5)) >> Repair Instructions - Off Vehicle (3 Of 3) >> Secondary Camshaft Drive Chain Installation - Left Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Left Secondary Camshaft Drive Chain Guide
    GM685372Courtesy of GENERAL MOTORS CORP.
  1. Install the left secondary camshaft drive chain guide.
    2. Fig 2: Identifying Lower Left Secondary Camshaft Drive Chain Guide Bolt
    GM685368Courtesy of GENERAL MOTORS CORP.
  2. Loosely install the lower left secondary camshaft drive chain guide bolt.
    3. Fig 3: View of Left Secondary Camshaft Drive Chain Shoe
    GM685367Courtesy of GENERAL MOTORS CORP.
  3. Install the left secondary camshaft drive chain shoe.
    4. Fig 4: Identifying Left Secondary Camshaft Drive Chain Shoe Bolt
    GM685364Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  4. Install the left secondary camshaft drive chain shoe bolt and tighten to 25 N.m (18 lb ft).
    5. Fig 5: View of Left Secondary Camshaft Drive Chain
    GM685362Courtesy of GENERAL MOTORS CORP.
  5. Install the left secondary camshaft drive chain by sliding the chain down through the left cylinder head and placing the chain on the end of the camshafts.
  6. Route the left secondary camshaft drive chain around the inner row of the intermediate drive chain sprocket teeth.
    7. Fig 6: Securing Camshaft
    GM1207121Courtesy of GENERAL MOTORS CORP.
  7. Install the left intake and exhaust camshaft sprockets into the left secondary camshaft drive chain.
    8. Fig 7: View of Left Intake & Exhaust Camshaft Sprockets
    GM517145Courtesy of GENERAL MOTORS CORP.
    NOTE: Do not use the stamped indicator marks for perpendicular alignment when installing the timing chain.
  8. Install the left intake and exhaust camshaft sprockets onto the camshafts. The camshaft sprocket slot marked "LI" which indicates left intake, engages the intake camshaft pin and the camshaft sprocket slot marked "LE" which indicates left exhaust, engages the exhaust camshaft pin.
    9. Fig 8: Securing Camshaft
    GM53007Courtesy of GENERAL MOTORS CORP.
  9. If necessary, use an open wrench on the hex cast near the front of each camshaft to help align the sprocket slot to the camshaft pin.
  10. Loosely install the left intake and exhaust camshaft sprocket bolts.
    11. Fig 9: Ensuring Camshaft Sprocket Drive Pins Are At Top Of Rotation
    GM517149Courtesy of GENERAL MOTORS CORP.
  11. Ensure the perpendicular alignment of the left intake and exhaust camshaft sprocket slots and camshaft pins to the cylinder head.
    12. Fig 10: Using Camshaft Holding Tool
    GM650538Courtesy of GENERAL MOTORS CORP.
  12. Install the J 44212:  tool to the left cylinder head camshafts.
    13. Fig 11: Identifying Upper Left Secondary Camshaft Drive Chain Guide Bolt
    GM685354Courtesy of GENERAL MOTORS CORP.
  13. Install the upper left secondary camshaft drive chain guide bolt. Tighten BOTH the upper and lower left secondary camshaft drive chain guide bolts to 25 N.m (18 lb ft).
    14. Fig 12: Collapsing Primary Camshaft Drive Chain Tensioner
    GM53004Courtesy of GENERAL MOTORS CORP.
  14. Collapse the left secondary camshaft drive chain tensioner using the following procedure:
    1. Rotate the ratchet release lever counterclockwise and hold.
    2. Collapse the left secondary camshaft drive chain tensioner shoe and hold.
    3. Release the ratchet lever and slowly release the pressure on the shoe.
  15. When the ratchet lever moves to the first detent a click should be heard and felt. Insert a pin through the hole in the release lever in order to lock the left secondary camshaft drive chain tensioner shoe in the collapsed position.
    16. Fig 13: Identifying Left Secondary Camshaft Drive Chain Tensioner to Engine Block Bolts
    GM685353Courtesy of GENERAL MOTORS CORP.
    NOTE: Ensure the left secondary camshaft drive chain tensioner release lever is facing out.
  16. Install the left secondary camshaft drive chain tensioner.
  17. Install the left secondary camshaft drive chain tensioner bolts and tighten to 25 N.m (18 lb ft).
  18. Remove pin from left secondary camshaft drive chain tensioner lever.
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