Removal of Upper Timing Chain

1. Remove the spark plug wires.

2. Set # 1 piston at TDC on its compression stroke.

3. Remove vacuum hoses, electrical harness, connectors, and harness clamps.

4. Remove the rocker cover.

5. Remove the distributor.

6. Remove camshaft sprocket cover.





7. Wipe off the links of the timing chain next to the timing marks on the sprockets. Put paint marks on the timing chain, matching them with the timing marks on the cam sprockets and idler sprocket (see Figure 1).

8. Remove cam sprocket bolts, cam sprockets, upper timing chain guides (if equipped) and upper timing chain.





9. Support lower timing chain by using a suitable tool as shown in Figure 2 to prevent the chain tensioner spring from coming out.

NOTE:
This step is only to be applied when the lower cover is not being removed.

10. Remove the idler sprocket.