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






NOTE: With the crankshaft damper timing mark aligned as in the previous step, the camshaft sprocket "V8" marks should also be at the 12 o'clock position (1, 2).






6. Remove power steering pump Power Steering Pump - Removal.
7. Remove access plugs (1,2) from left and right cylinder heads for access to chain guide fasteners.
8. Remove the oil fill housing to gain access to the right side tensioner arm fastener.
9. Remove crankshaft damper Vibration Damper - Removal and timing chain cover Engine Timing Cover(s) - Removal.





10. Collapse and pin primary chain tensioner (1).

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

11. Remove secondary chain tensioners.





12. Remove camshaft position sensor (3) from right cylinder head.

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.





13. Use Spanner Wrench 6958 (2) with Adapter Pins 8346 and remove left and right camshaft sprocket bolts.





14. While holding the left camshaft with Camshaft Holder 8428A (1), remove the left camshaft sprocket (3). Slowly rotate the camshaft approximately 15 degrees clockwise to a neutral position.





15. While holding the right camshaft with Camshaft Holder 8428A (1), remove the right camshaft sprocket (2). Slowly rotate the camshaft approximately 45 degrees counterclockwise to a neutral position.
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.