Timing Chain Guide: Service and Repair

TIMING CHAIN GUIDE - UPPER

NOTE: When servicing the timing chain guides, both the upper and the lower guide should be replaced in pairs.





1. Disconnect negative battery cable.
2. Remove the left cylinder head cover.
3. Remove the right cylinder head cover.
4. Remove the timing chain cover.




5. Remove the timing chain tensioner (3).




6. Rotate the engine and remove the right camshaft drive gear lower bolt.
7. Rotate the engine back to TDC and check the alignment marks at the balance shaft, camshaft gear and crankshaft gear.
8. Remove the remaining right camshaft drive gear retaining bolts.
9. Separate the right camshaft drive gear and chain from camshaft.
10. Remove the right camshaft drive gear.
11. Secure the chain so that there is slack at the timing chain guides but the chain remains on the crankshaft gear.




12. Cut a small section of tubing, with an inner diameter of the tube that is larger than the outer diameter of the timing chain guide pin, 25 mm (1 inch) in length.
13. Place the tube over the timing chain guide pin and thread a bolt into the timing chain guide pin in the right cylinder head. Tighten the bolt until the guide pin is removed from the cylinder head.




14. Remove the bolt for the left upper timing chain.
15. Remove the upper timing chain guide from the left cylinder head.
16. Remove the bolt for the right upper timing chain.
17. Remove the upper timing chain guide in the right cylinder head.