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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) >> Primary Camshaft Drive Chain and Sprockets Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the oil pump. Refer to Oil Pump Replacement .
    2. Fig 1: Primary Timing Gear Alignment Marks
    GM517185Courtesy of GENERAL MOTORS CORP.
  2. Align the primary timing marks (1) using the J 39946  . See Special Tools .
  3. Remove the secondary camshaft drive chains. Refer to Secondary Camshaft Intermediate Drive Chain Replacement - Right Side  and Secondary Camshaft Intermediate Drive Chain Replacement - Left Side .
  4. Remove the primary drive chain tensioner. Refer to Primary Camshaft Intermediate Drive Chain Tensioner Replacement .
    5. Fig 2: Oil Outlet Tube & Bolts
    GM928361Courtesy of GENERAL MOTORS CORP.
  5. Remove the oil outlet tube (4).
    6. Fig 3: Primary Camshaft Drive Chain Guide & Bolts
    GM928395Courtesy of GENERAL MOTORS CORP.
  6. Remove the primary camshaft drive chain guide bolts and guide.
    7. Fig 4: Camshaft Intermediate Sprocket Retaining Bolt
    GM928389Courtesy of GENERAL MOTORS CORP.
  7. Remove the camshaft intermediate sprocket retaining bolt.
    8. Fig 5: Primary Camshaft Drive Chain, Intermediate Drive Shaft Sprocket & Crankshaft Sprocket
    GM928397Courtesy of GENERAL MOTORS CORP.
  8. Remove the following as an assembly:
    • The primary camshaft drive chain (3)
    • The crankshaft sprocket
    • The camshaft intermediate sprocket
  9. Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection .
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