When I grease my 7s & 8s racks, I pinch a nipple out of the Ferguson tractor. I don't know the size, but at least I know where to find one. Our cars may have no longer shared an engine with the Fergy tractor as did the earlier 4 cylinder models, but we did still share that grease nipple. On the same tack, I found the diaphragm in the engine driven fuel lift pump on my 1950s Fordson super major tractor [4 cylinder diesel] fits the fuel pump on the 7. The Fordson pump overhaul kit in Oz cost just $15, & reliably available. This is somewhat cheaper, & less bother than a new pump for the 7, that cost $128, & pumps excessively high pressure, causing carb flooding. Hasbeen