Timing Chain & Sprockets - Removal

REMOVAL



















1. Disconnect the negative battery cable.
2. Drain the cooling system Service and Repair.
3. Remove right and left cylinder head covers Cylinder Head Cover(s) - Removal.
4. Remove the radiator fan shroud Electric Radiator Fan - Removal
5. Rotate engine until the timing mark on crankshaft damper (2) aligns with TDC mark on timing chain cover (2) and the camshaft sprocket "V6" marks are at the 12 o'clock position (No. 1 TDC exhaust stroke).










6. Remove the power steering pump Power Steering Pump - Removal.
7. Remove the access plugs from the left (2) and right (1) cylinder heads for access to the 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 the 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 bolt (3) and remove 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.

13. Remove left and right camshaft sprocket bolts.
14. While holding the left camshaft steel tube with Camshaft Holder 8428A (2), remove the left camshaft sprocket. Slowly rotate the camshaft approximately 15 degrees clockwise to a neutral position.
15. While holding the right camshaft steel tube with Camshaft Holder 8428A (2), remove the left camshaft sprocket. 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 primary chain tensioner.