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Date: 15 Dec 2002
Remote Name: 220.127.116.11
There are a few things that you can check, As mentioned in the other reply, check the pivot cones and pins for wear as well as tightness. Also check the head lift rod pivots at both ends for contamination as well as being too tight. Th epivot pin on the cam follower arm can seize and cause the shift rod to flex. This also creates uneven grinding.Check the rocker head assembaly for contamination and alignment. Make sure it is clean and the witness marks on the rockers align with the head marks. I have found that if the grinding wheel is less than 2 inches from the edge of the wheel to the arbour collerthis will cause the top rocker to lift off the rocker head. Also make sure that the rocker springs are tight enoug. If they are over streached to make them tight, replace them. Check the rocker ocater spring steel pieces to see if they are broken or worn. There is also an update for the older rocker heads that is much stiffer than the old ones. You could check with Armstrong Manufacturing for this piece. Steve H.