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Timing Belt/Chain And Sprockets: Removal

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect negative cable from battery.
  2. Drain cooling system (Refer to STANDARD PROCEDURE--DRAINING COOLING SYSTEM 4.7L ).
  3. Remove right and left cylinder head covers (Refer to ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S)-REMOVAL ).
  4. Remove radiator fan shroud.
  5. Rotate engine until timing mark on crankshaft damper aligns with TDC mark on timing chain cover (Fig 1) (#1 cylinder exhaust stroke) and the camshaft sprocket "V8" marks are at the 12 o'clock position (Fig 2).
    Fig 1: Identifying Engine Top Dead Center (TDC) Indicator Mark
    G02657086Courtesy of DAIMLERCHRYSLER CORP.
    Fig 2: Identifying Camshaft Sprocket V8 Marks
    G02657087Courtesy of DAIMLERCHRYSLER CORP.
  6. Remove power steering pump (Refer to PUMP ).
  7. Remove access plugs (2) from left and right cylinder heads for access to chain guide fasteners (Fig 3).
    Fig 3: Removing Cylinder Head Access Plug
    G02657088Courtesy of DAIMLERCHRYSLER CORP.
  8. Remove the oil fill housing to gain access to the right side tensioner arm fastener.
  9. Remove crankshaft damper (Refer to ENGINE/ENGINE BLOCK/VIBRATION DAMPER-REMOVAL ) and timing chain cover (Refer to ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S)-REMOVAL ).
  10. Collapse and pin primary chain tensioner (Fig 4).
    CAUTION: Plate behind left secondary chain tensioner could fall into oil pan. Therefore, cover pan opening.
    Fig 4: Collapsing And Pinning Primary Chain Tensioner
    G02657089Courtesy of DAIMLERCHRYSLER CORP.
  11. Remove secondary chain tensioners.
  12. Remove camshaft position sensor from right cylinder head (Fig 5).
    Fig 5: Removing Camshaft Position Sensor
    G02657090Courtesy of DAIMLERCHRYSLER CORP.
    CAUTION: Care should be taken not to damage camshaft target wheel. Do not hold target wheel while loosening or tightening camshaft sprocket. Do not place the target wheel near a magnetic source of any kind. A damaged or magnetized target wheel could cause a vehicle no start condition.
    CAUTION: Do not forcefully rotate the camshafts or crankshaft independently of each other. Damaging intake valve to piston contact will occur. Ensure negative battery cable is disconnected to guard against accidental starter engagement.
  13. Remove left and right camshaft sprocket bolts.
  14. While holding the left camshaft steel tube with adjustable pliers, (Fig 6) remove the left camshaft sprocket. Slowly rotate the camshaft approximately 15 degrees clockwise to a neutral position.
    Fig 6: Identifying Left Side Camshaft Rotation
    G02657091Courtesy of DAIMLERCHRYSLER CORP.
  15. While holding the right camshaft steel tube with adjustable pliers, (Fig 7) remove the right camshaft sprocket. Slowly rotate the camshaft approximately 45 degrees counterclockwise to a neutral position.
    Fig 7: Identifying Right Side Camshaft Rotation
    G02657092Courtesy of DAIMLERCHRYSLER CORP.
  16. Remove idler sprocket assembly bolt.
  17. Slide the idler sprocket assembly and crank sprocket forward simultaneously to remove the primary and secondary chains.
  18. Remove both pivoting tensioner arms and chain guides.
  19. Remove chain tensioner.
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