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MF 50 Front hub troubles

W

wayacoyote

Member
When the bearings blew out on one hub, I decided to replace them on both sides at the same time. Come to find out, the hubs on this '63 tractor are different. I over looked the first give away (one hub is red and the other's grey) when I started. The second give away is the hang up. The seal won't fit in the hub. I verified with calipers that the hub is slightly under-sized.

The bearings and races that came off of both hubs have the same numbers, but the grease seals are different. One is 6336 and the other is 6336-5. I am trying to replace both sides with Part No: WBKMF1 ordered from Yesterday's Tractors.

Did someone substitute parts leading to the failure?

I'm stumped on how to get this back together.
 
Someone swapped a hub, can you put the hubs on without the seals, and see if you can set the preload, or make sure the races in both hubs are the same outside to outside width? If that is the same you could have the one hub that measures small where the seal goes in machined to the same size as the other hub.
 
Thanks for the suggestion, PTFarmer.

Fortunately, I spoke with a very helpful customer service Expert and mentioned the seal # that I needed. Since the diagram their website showed the seal I needed and the bearings were the same, he set me up with what I needed.

The saga continues in that, while trying to preload the hubs, I discovered that the threads on the shafts were shot. It pays to keep good bearings on and to keep them well lubbed. So the project grows. I think someone here taught me the term "mission creep."
 
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