I do'nt know the mechanical lift on the Oliver 60 is the same as on the Fleetline and Super tractors. I'm luky to have an orginal Oliver Shop Manuel of the Fleetline and Supers, and in there I found a page that couvers your problem. So it's not new, for more than fifty years it was still there ! The page has an important drawing, so I made a scan of it and send it with this massage. Whish you succes.
Ad Zandee.