Timing Chain & Sprockets - Removal

REMOVAL

Special Tools:











1. Disconnect and isolate the negative battery cable (3).

2. Drain the cooling system Service and Repair.





3. Remove both cylinder head covers (1) Removal and Replacement.





4. Rotate the engine until the timing mark (2) on the crankshaft damper aligns with the TDC mark on timing chain cover (2) (#1 cylinder exhaust stroke).





5. Verify the camshaft sprocket "V8" marks are at the 12 o'clock position (1,2).





6. Remove the right (1) and left (2) access plug from the cylinder heads for access to chain guide fasteners.

7. Remove the oil fill housing to gain access to the right side tensioner arm fastener.





NOTE:
Transmission cooler line snaps into shroud lower right hand corner.

8. Remove the vibration damper bolt.

9. Remove the vibration damper using Crankshaft Insert (8513A) (1) and (1023) Three Jaw Puller (2).





CAUTION:
The 4.7L engine uses an RTV sealer instead of a gasket to seal the front cover to the engine block, from the factory. For service, Mopar(R) Grey Engine RTV sealant must be substituted.

NOTE:
It is not necessary to remove the water pump for timing cover removal.

10. Remove the timing chain cover Engine Timing Cover(s) - Removal.





11. Collapse and pin (3) the primary chain tensioner (1).

CAUTION:
Plate behind left secondary chain tensioner could fall into oil pan. Therefore, cover pan opening.

12. Remove the secondary chain tensioner.





The Camshaft Position Sensor (CMP) (2) is bolted to the front/top of the right cylinder head (1).

13. Disconnect the electrical connector (4) at the CMP sensor.

14. Remove the sensor mounting bolt (3).

15. Carefully twist the sensor from the cylinder head.

16. Check the condition of the sensor O-ring.





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.

17. Remove both camshaft sprocket bolts.





18. While holding the left camshaft steel tube with adjustable pliers (1), remove the left camshaft sprocket. Slowly rotate the camshaft approximately 15 degrees clockwise to a neutral position.

19. While holding the right camshaft steel tube with adjustable pliers (1), remove the right camshaft sprocket. Slowly rotate the camshaft approximately 45 degrees counterclockwise to a neutral position.

20. Remove the idler sprocket assembly bolt.

21. Slide the idler sprocket assembly and the crank sprocket forward simultaneously to remove the primary and secondary chains.

22. Remove both pivoting tensioner arms and chain guides.

23. Remove the chain tensioner.