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Home >> Chevrolet >> 2015 >> Camaro LS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 6.2L (L99 LS3 LSA) Or 7.0L (LS7) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Camshaft Timing Chain and Sprocket Replacement (LS3, LSA) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Crankshaft Key & Keyway
    GM156149Courtesy of GENERAL MOTORS COMPANY
  1. Install the key into the crankshaft keyway, if previously removed.
    2. Fig 2: View Of Installed Crankshaft Key
    GM1272887Courtesy of GENERAL MOTORS COMPANY
  2. Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.
    3. Fig 3: View Of Crankshaft Sprocket
    GM1658182Courtesy of GENERAL MOTORS COMPANY
  3. Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
    4. Fig 4: View Of Crankshaft Sprocket & Installer
    GM1658237Courtesy of GENERAL MOTORS COMPANY
  4. Use the J 41478  crankshaft front oil seal installer (1) and the J 41665  crankshaft balancer and sprocket installer (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.
    5. Fig 5: Timing Belt Tensioner Retaining Pin
    GM1658249Courtesy of GENERAL MOTORS COMPANY
  5. Compress the timing chain tensioner guide and install the EN 46330  timing belt tensioner retaining pin.
    6. Fig 6: View Of Timing Chain Tensioner
    GM1658251Courtesy of GENERAL MOTORS COMPANY
  6. Install the timing chain tensioner (232) and bolts (231).

    Tighten 

    Tighten the bolts to 30 N.m (22 lb ft).

    7. Fig 7: View Of Camshaft Sprocket & Timing Chain
    GM1658265Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The sprocket teeth and timing chain must mesh.
    • The camshaft and the crankshaft sprocket alignment marks MUST be aligned properly.
  7. Position the camshaft sprocket (205) so the timing mark is in the 6 o'clock position.
  8. Install the camshaft sprocket (205), timing chain (208), and NEW bolt (206).
    9. Fig 8: Identifying Camshaft & Crankshaft Marks
    GM1658268Courtesy of GENERAL MOTORS COMPANY
  9. Inspect the sprockets for proper alignment. The mark on the camshaft sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
    10. Fig 9: Locating Tensioner Pin
    GM1658271Courtesy of GENERAL MOTORS COMPANY
  10. Remove the EN 46330  timing belt tensioner retaining pin.
    11. Fig 10: Identifying Camshaft Sprocket Bolt Tightening Sequence
    GM1658274Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do Not re-use camshaft sprocket bolt. New sprocket bolt must be used.

  11. Tighten the camshaft sprocket bolt

    Tighten 

    1. Tighten the bolt a first pass to 75 N.m (55 lb ft).
    2. Tighten the bolt a final pass an additional 50 degrees using J 45059  angle meter.
  12. Remove the J 42386-A  flywheel holding tool (1) and bolts.
  13. Install the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement (L99, LS3,LSA) .
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