Cockshutt 40PD Generator Pulley Diameter

[Christopher Mikesell]

Does anyone know the original diameter of the Cockshutt 40PD generator pulley? Someone botched an alternator conversion on my tractor and I will be converting it back to original with a generator from a MF-65 (this generator cross-references as a match). I can tell from pictures that, unfortunately, the pulley sizes are different. I don't have an original pulley and haven't been able to get an original to measure. This will be used with and original voltage regulator. It may be that the early 560 tractors with the L4 Perkins have the same generator and pulley diameter, but I am not sure.

 

[J.Wondergem]

Does anyone know the original diameter of the Cockshutt 40PD generator pulley? Someone botched an alternator conversion on my tractor and I will be converting it back to original with a generator from a MF-65 (this generator cross-references as a match). I can tell from pictures that, unfortunately, the pulley sizes are different. I don't have an original pulley and haven't been able to get an original to measure. This will be used with and original voltage regulator. It may be that the early 560 tractors with the L4 Perkins have the same generator and pulley diameter, but I am not sure.

If the pulley is the same width it won't hurt to run it. If it's smaller in diameter it'll run a little faster. If it larger it will run a little slower.

 

[Christopher Mikesell]

If the pulley is the same width it won't hurt to run it. If it's smaller in diameter it'll run a little faster. If it larger it will run a little slower.

I know, and I have been using the tractor for over 15 years with the non-functional alternator and cobbled-up bracket. I bought it from my boss' estate sale last year and it is time to get the tractor to charge its own battery, as well as fixing the brakes, rebuilding the live pto (already done), fixing the knoedler seat, and getting the hydraulics to work.