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Home >> Cadillac >> 2010 >> STS 3.6 V, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 4.6L (LH2) - Repair Instructions - On Vehicle - 1 Of 2) >> Secondary Timing Chain Guide Replacement - Left Side >> Installation Procedure

Installation Procedure

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    Fig 1: Left Secondary Camshaft Drive Chain Guide & Bolt
    GM928359Courtesy of GENERAL MOTORS CORP.
  1. Position the left secondary camshaft drive chain guide in through the left front cylinder head as shown.
    2. CAUTION: Refer to Fastener Caution .
  2. Install the left secondary camshaft drive chain guide bolt and tighten to 25 N.m (18 lb ft).
    3. Fig 2: Holding Camshaft In Position
    GM1275674Courtesy of GENERAL MOTORS CORP.
  3. Install the left exhaust actuator to the secondary chain, ensuring that the actuator timing mark is aligned with the chain link that was marked during disassembly.
  4. Loosely install the oil control valve to secure the exhaust actuator to the camshaft.
    5. CAUTION: Refer to Torque Reaction Against Timing Drive Chain Caution .
  5. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when tightening the oil control valve to 120 N.m (89 lb ft).
  6. Install the left secondary camshaft drive chain tensioner. Refer to Secondary Camshaft Intermediate Drive Chain Tensioner Replacement - Left Side .
    7. Fig 3: Aligning Camshaft Sprocket & Timing Chain Paint Marks
    GM1275693Courtesy of GENERAL MOTORS CORP.
  7. Ensure that the previously created paint marks (1, 3) still line up with the sprocket timing marks (2, 4).
  8. Install the left camshaft actuator housing. Refer to Camshaft Position Actuator Housing Replacement - Left Side .
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