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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Mechanical - 4.6L - 1 Of 4) >> On-Vehicle Repair Instructions (1 Of 2) >> Primary Camshaft Drive Chain and Sprockets Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the oil pump. Refer to Oil Pump Replacement .
    2. Fig 1: Identifying 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 Drive Chain Replacement - Right Side  and Secondary Camshaft Drive Chain Replacement - Left Side .
  4. Remove the primary drive chain tensioner. Refer to Primary Camshaft Drive Chain Tensioner Replacement .
    5. Fig 2: Identifying Camshaft Intermediate Sprocket Retaining Bolt & Camshaft Drive Chain
    GM534270Courtesy of GENERAL MOTORS CORP.
  5. Remove the camshaft intermediate sprocket retaining bolt (3).
  6. Remove the following as an assembly:
    • The primary camshaft drive chain (4)
    • The crankshaft sprocket
    • The camshaft intermediate sprocket
  7. Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection .
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