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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 5.7L (LS6)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Timing Chain and Sprockets Installation >> 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 CORP.
  1. Install the key into the crankshaft keyway, if previously removed.
    2. Fig 2: View Of Installed Crankshaft Key
    GM1272887Courtesy of GENERAL MOTORS CORP.
  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
    GM156150Courtesy of GENERAL MOTORS CORP.
  3. Install the crankshaft sprocket onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
    4. Fig 4: Using J 41665 To Install Crankshaft Sprocket
    GM63199Courtesy of GENERAL MOTORS CORP.
  4. Use the J 41665  in order to install the crankshaft sprocket. See Special Tools and Equipment .

    Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.

  5. Rotate the crankshaft sprocket until the alignment mark is in the 12 o'clock position.
    6. Fig 5: View Of Chain Dampener & Retaining Bolts
    GM1272946Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the chain dampener (232) and bolts (231).

    Tighten:  Tighten the bolts to 35 N.m (26 lb ft).

    7. Fig 6: Identifying Proper Alignment Of Chain Dampener Bolts
    GM1272891Courtesy of GENERAL MOTORS CORP.
  7. With the chain dampener properly installed, the heads of the bolts (231) should install to flush or below the face of the dampener (232).
    8. Fig 7: View Of Camshaft Sprocket, Timing Chain & Retaining Bolts
    GM1272848Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Properly locate the camshaft sprocket locating pin with the camshaft sprocket alignment hole.
    • The sprocket teeth and timing chain must mesh.
    • The camshaft and the crankshaft sprocket alignment marks MUST be aligned properly.
    • Locate the camshaft sprocket alignment mark in the 6 o'clock position.
  8. Install the camshaft sprocket and timing chain.
    9. Fig 8: View Of Camshaft & Crankshaft Sprockets Timing Marks Aligned
    GM156158Courtesy of GENERAL MOTORS CORP.
  9. If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks.
  10. Install the camshaft sprocket bolts.

    Tighten:  Tighten the camshaft sprocket bolts to 35 N.m (26 lb ft).

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