20-02-2019, 05:58 PM
I've checked the things you mention, Trevor, and all appear to be O.K. This particular 707 is indeed almost 25 years old, but, having said that, the mechanism works O.K. With the cam gear off, all the parts move as they should relative to each other. What I found was that the gear on the center spindle wasn't engaging the teeth on the cam gear, and, if I gently lifted it so that the two meshed properly, the mechanism functioned. so something has caused the gear to move downwards on the |T/T center spindle. Furher checks needed to determine what's happened.
