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Home >> Jeep Truck >> 2009 >> Grand Cherokee 2WD V6-3.7L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Timing Components >> Timing Chain >> Service and Repair >> Removal and Replacement >> Timing Chain & Sprockets - Removal

Timing Chain & Sprockets - Removal






REMOVAL





1. Disconnect negative cable from battery.
2. Drain cooling system. Service and Repair
3. Remove right and left cylinder head covers. Cylinder Head Cover(s) - Removal.
4. Remove radiator fan. Cooling Fan - Removal
5. Rotate engine until timing mark (2) on crankshaft damper aligns with TDC mark on timing chain cover (1).





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. Power Steering Pump - Removal





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 Vibration Damper - Removal and timing chain coverEngine Timing Cover(s) - 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.





13. Remove camshaft position sensor (2).






CAUTION: Care should be taken not to damage the camshaft target wheel. Do not hold the target wheel while loosening or tightening the 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 the negative battery cable is disconnected and isolated to guard against accidental starter engagement.

14. Remove left and right camshaft sprocket bolts.
15. While holding the left camshaft steel tube Camshaft Holder 8428A (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 Camshaft Holder 8428A (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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