PS: The Tractor turns out to be a 1964 Ford 4000 with a Ford Industrial Diesel Replacement Engine (had a 172 ci diesel engine from the factory) with casting number D1NL 8015A and I'm looking for help finding a seal/bearing for the timing chain cover. I have an oil leak where the shaft comes out of the timing chain cover and drives the hydraulic pump. Also, does anyone know the spec's on this replacement engine? Thanks