B7100 - Wheel Spacers - Weights - Filling Tires

TheOldHokie

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I already did put a new ballnut and shaft in it. It was with the plastic cage bearings. As I said it lasted one week. Finding a thrust bearing of a specific size AND material without a part number is like trying to find a needle(bearing) in a haystack.
I thught you had the dealer rebuild the ballnut. Break out a caliper and measure the thrust bearing. ID , ID, and thickness is all you need to know to find an equivalent.

Dan
 

North Idaho Wolfman

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When

When you say the box are you talking the transmission? Or the front diff? Personally I think the replacement thrust bearings Kubota is selling are just garbage. When my OE ones failed they were steel cage bearings. The new ones are all plastic.
Are you dealing with a DT (gear) or an HST?
 

North Idaho Wolfman

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BradMW

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B7100
Oct 9, 2021
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BradMW

New member

Equipment
B7100
Oct 9, 2021
29
2
3
Valley Center, CA
That

That may not be bad if I can confirm whether it has a metal thrust bearing cage.
Never mind, I already bought a replacement ballnut and shaft from them. They’re the ones that sent me a shaft 1” shorter than the OE and it had the worm gear and ballnut threads cut opposite of mine so that if I turned the steering wheel right, the wheels went left and vice versa.
 

North Idaho Wolfman

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Sandpoint, ID
Confused what that has to do with just buying the whole box that's made to replace your bad one?
If you don't like that particular seller there are others that are selling the complete box, some even include the steering wheel.
 

BradMW

New member

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B7100
Oct 9, 2021
29
2
3
Valley Center, CA
Confused what that has to do with just buying the whole box that's made to replace your bad one?
If you don't like that particular seller there are others that are selling the complete box, some even include the steering wheel.
For starters if the real issue is that Kubota switched from a steel cage thrust bearing to a plastic one $400+ is a lot of money to spend when a $25 bearing may be at the heart of the issue. And if Kubota is only selling plastic cage bearings chances are all the aftermarket sellers are stuffing the same thing in their builds. None of them say what’s inside.

Secondly, I don’t know that the issue causing the steering gear box failure isn’t external to the gear box itself. So again $400+ is a lot to spend to test that theory.
 

TheOldHokie

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Myersville, MD
windyridgefarm.us
For starters if the real issue is that Kubota switched from a steel cage thrust bearing to a plastic one $400+ is a lot of money to spend when a $25 bearing may be at the heart of the issue. And if Kubota is only selling plastic cage bearings chances are all the aftermarket sellers are stuffing the same thing in their builds. None of them say what’s inside.

Secondly, I don’t know that the issue causing the steering gear box failure isn’t external to the gear box itself. So again $400+ is a lot to spend to test that theory.
Measure the bearing and post the dimensions.

Dan