Serf and Yeoman tranny swap?

[MikeG 0]

I will shortly be getting a 637 Yeoman from a friend with a blown engine. Will the tranny exchange with the one in a Serf? Is the whole rear structure from the swivel back the same. I want to replace the Serf 2 speed with a 3 speed, the larger tires on the Yeoman would be nice also. I had a 616 Yeoman with a 2 speed a few years ago, and seem to think they were the same. Thanks

[TomSchmit 53]

Mike - I know that the 6XX series Yeoman tractors shared the same transmissions as the Broadmoors. I believe that the 5XX series Serfs also used the same trannies. You may be able to simply switch the rear ends at the swivel point, as you suggest. Tom