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Timing Chain & Sprockets: Removal

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Top Dead Center (TDC) Indicator Mark
GC0011859Courtesy of DAIMLERCHRYSLER CORP.
1 - TIMING CHAIN COVER
2 - CRANKSHAFT TIMING MARKS
  1. Disconnect negative cable from battery.
  2. Drain cooling system (Refer to COOLING - STANDARD PROCEDURE) .
  3. Remove right and left cylinder head covers (Refer to ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S)  - REMOVAL).
  4. Remove radiator fan (Refer to COOLING/ENGINE/RADIATOR FAN - REMOVAL) .
  5. Rotate engine until timing mark (2) on crankshaft damper aligns with TDC mark on timing chain cover (1).
    Fig 2: Camshaft Sprocket V6 Marks (#1 TDC, Exhaust Stroke)
    GC0011861Courtesy of DAIMLERCHRYSLER CORP.
  6. Make sure the camshaft sprocket "V6" marks (1) are at the 12 o'clock position (No. 1 TDC exhaust stroke).
  7. Remove power steering pump (Refer to STEERING/PUMP - REMOVAL) .
    Fig 3: Cylinder Head Access Plugs
    GC0011858Courtesy of DAIMLERCHRYSLER CORP.
    1 - RIGHT CYLINDER HEAD ACCESS PLUG
    2 - LEFT CYLINDER HEAD ACCESS PLUG
  8. Remove access plugs (1 and 2) from left and right cylinder heads for access to chain guide fasteners.
  9. Remove the oil fill housing to gain access to the right side tensioner arm fastener.
  10. Remove crankshaft damper (Refer to ENGINE/ENGINE BLOCK/VIBRATION DAMPER - REMOVAL)  and timing chain cover (Refer to REMOVAL ).
  11. Collapse and pin primary chain tensioner.
    CAUTION: Plate behind left secondary chain tensioner could fall into oil pan. Therefore, cover pan opening.
  12. Remove secondary chain tensioners.
    Fig 4: Camshaft Position Sensor
    GC0011860Courtesy of DAIMLERCHRYSLER CORP.
    1 - CYLINDER HEAD
    2 - CAMSHAFT POSITION SENSOR
    3 - SCREW
  13. Remove camshaft position sensor (2).
    Fig 5: Special Tool 8428
    GC0011862Courtesy of DAIMLERCHRYSLER CORP.
    1 - Camshaft hole
    2 - Special Tool 8428
    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.
  14. Remove left and right camshaft sprocket bolts.
  15. While holding the left camshaft steel tube with Special Tool 8428 Camshaft Wrench (2) , remove the left camshaft sprocket. Slowly rotate the camshaft approximately 5 degrees clockwise to a neutral position.
  16. While holding the right camshaft steel tube with Special Tool 8428 Camshaft Wrench (2), remove the right camshaft sprocket.
  17. Remove idler sprocket assembly bolt.
  18. Slide the idler sprocket assembly and crank sprocket forward simultaneously to remove the primary and secondary chains.
  19. Remove both pivoting tensioner arms and chain guides.
  20. Remove primary chain tensioner.
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