B7100 rear hubs are hinky

[hodge]

I would assume that other owners of B7100's have the same issue that I do- the hubs move on the axle. My tractor is well kept and has low hours, but when going backwards and forwards, I can see the rear wheel, either side, move around until the shaft takes up the slack in the hub. Are the hubs on Ebay, which look like a slightly different design, better that the originals, or is there another solution? Obviously, as time goes on, the more it moves, the more it wears on the shaft.
So, is there a good solution? I am not jaded, because I know that nothing is perfect, and that overall, the tractor is an excellent piece of equipment. I just want it to last.

 

[Kytim]

Hi,
If you look you will find another thread here about hub repair recently that showed a neat idea. it involved welding coupling nuts to the hub to tighten them. I thought so much of the idea I purchased 2 used hubs on ebay to do that to as time permitted then change them. then I have 2 to convert to put on my 2WD. then I will have hubs to sell.

from snowy west KY, kytim

 

[exkx61]

I had new key ways cut in my hubs and really did not hold for very long. BUT whats held up for 6 + years is some epoxy that John Deere sells for their heavy equipment. JD parts man said heat is required for removal .Works great would use again. About $30.00.If you need will get p/n.

 

[Piker]

Previous post mentioned by kytim was mine after I bought my B7100 & spent a couple of weeks repairing the old girl. Have plowed with it now about 8 times & my repaired hubs are rock solid. We have had at least (1) snow storm a week since I bought the tractor. Sitting here with my laptop watching our latest gut-buster blizzard, which is supposed to last all day. Going to be a great opportunity to try out my "new" 48" rear blower (post is farther down on page 1).Here is a link to some photos of my tractor & a couple of the completed hub repair - http://s572.photobucket.com/albums/ss166/Piker_photos/Kubota B7100/
Scroll down to page 3 to 1980 b7100 (Piker) & you can read the description of the repair.

 

[bikerdib]

I had a B7100 previously and had the same issue. Tried shimming the hubs but the shims wore out quickly. The problem was solved by a divorce; I sold the weekend place (against MULTIPLE occurrences of warnings not to do so my my brother) and then sold the B7100.

Of course my brother was right and I eventually found another weekend property. I since found a B7300. The 7300 has the new style hubs which clamp tight on the axle. No movement. I think the hubs for the 7100 on ebay are designed like the later hubs.

Or, to make sure about what you are getting you might go to a Kubota dealer and see if they sell an updated hub (it might be the same as the 7300 hub). The only issue will be if the flopping of the hub has worn the axle.

 

[hodge]

I haven't pulled the hub yet- I will soon. But, it looks like the wear is on the inside of the hub, and the pin. Both combined seem to be giving me the play that I see. I will check out the newer style hubs. I want to catch this before it does appreciably wear the axle. Thanks for your input and experience.