allis chalmer b wheels

Hi...first post... Recently bought 1949 Allis Chalmers b. Already own a 1941 Allis Chalmers b in pieces that I inherited. Want to take the wheels off the '41 and put onto the '49. The '41 has 5 lug nuts around large wheel nut, the '49 does not. How do I swap them...Was told by dealer not to remove large wheel nut or I will mess up bearings. I am trying to restore father's old tractor and could use help...

your dealer dont know squat. the  1-1/2 inch nut that holds the hub onto the axle has nothing to do with the bearing. That being said, morton is right, the two axles are different. You can take the entire final drive case off the trans/ differential housing and bolt the other final drive case onto the differential, or you can take the axle stub out of the final drive and swap--- not an easy job for you. They use to make an adaptor that went over the splines and then you could bolt the 5 stud hub to it, but i doubt you will find a set of those.  why do you want to change ????????  there might be a better way.

The 41 has a matched set of tires...a little weather checked but o.k. The '49 that I just purchased has one new tire and one old of different size. tractor sits a little lopsided and I want to use with belly mower. I didn't want to invest in another new tire until I was a little more sure of the purchase.

Everything the B Guys have told you is good information. If it is just to get a matching set of tires on the 49 using those on the 41 go with JimDs method and just swap rims and tires. This is presuming that both the 41 and the 49 have the same style rims and locking blocks and bolts.     If the 41 has the 5 bolt splined adapter hubs held on to the splined axle by the big center nut and uses the nearly flat reversable 5 bolt wheel centers it more than likely has a tall adjustable front axle also. Unfortunatly these adapter hubs are prone to work themselves loose and the splines in the hub and on the axle get sloppy and will not make up snug. The easy way to check to see if they are ok is to grab the top of the tire and shake the tractor side to side. If they are a sloppy fit behind the big nut start looking for other final drives with good splines. There is no easy fix for worn out splines. Good luck finding 5 bolt adapters with good splines. There may have been lots of them at one time but they are few and far between these days. You seldom see the 5 bolt adapter hubs on Bs at shows.

Thanks for all the help...I will probably try and split at the rims to save time(its mowing season). I also have an impact and socket to fit the lugs...where would you find a 1' 1/2" wheel nut socket? My father machined one, but I can't find it. Thanks again for the help..I will try to upload a pic of the wheels.

How do I take off my rear tire from the B, the center nut and how do I replace my rear bearings. I am assuming that is the knocking noise that I am hearing. 

Rick, after saying all that, it is NOT common to have bearing problems that make noise... but it is possible..