The 1955 FWA could be ordered with 16.9-38 rears. My price guide shows 14.9-26 tires on the front to go with that.

Your 1955 is a 1971, although I think some of the numbers might be mixed up. Your model number should be 599 82036. I think the serial number might have the last 2 digits switched as well. Could you double check those?

My guess is something is sticking in the injector pump, it is most likely going to have to come off.

You can get a new axle from AGCO, but be ready to pay big $$$$. Try Maibachs at 800 808 9934. If they can't get you a used one, they can take your old one and replace the ends with u-joints.