Kubota B7100 Steering box
- Thread starter Pacific Pete
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I understand the notion to fix it if you can, but if the local shop is estimating $100 plus you have to buy the bearings, why would you not buy a new complete assembly for $135 like I did for my B6100. I am ALMOST positive they use the same part and can be found at the bottom of this website.
store.telepak.net/samstractors/page52.html
I can't seem to find my old one to look at but when I removed it I felt it was in bad enough shape that trying to fix it wouldn't be worth it considering the price for a new one.
store.telepak.net/samstractors/page52.html
I can't seem to find my old one to look at but when I removed it I felt it was in bad enough shape that trying to fix it wouldn't be worth it considering the price for a new one.
Soundguy
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Wow.. that ballnut must have seen some horrible abuse and lack of maintenance ( lube ) for the wraparound tubes to have disintegrated!!
Google spedi sleave
it's a sleave to slip over a shaft to repair a groved area.
soundguy
Google spedi sleave
it's a sleave to slip over a shaft to repair a groved area.
soundguy
Soundguy
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- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
I guess if yuor machine shop is 'poking' you for as much money to fix the old one as purchasing a new one.. then yeah.. I'd repalce.. Like I said.. last time I fixed one in a ford was 20$ from the local machinist / weld shop. Maybe ford's just easier to work on 
soundguy
soundguy
in my case, i think you are right. Not but a few months after I got my used B6100D did the steering go out. When I looked at the case, it was almost completely dry with oil. Everything else seemed well maintained on it but this must have been overlooked for many any years. I think the loader really causes turning stress on these particular units and couple that with no lube it becomes clear why all the B7100 owners want to add power steering.
charlz
Elite Member
Just the tips where they align the balls to the grooves on the shaft. Sort of a chicken and the egg scenario, not sure what damaged what but the shaft grooves, ball nut groves and tips of the tubes were all damaged. I think the key problem is the shaft seal goes bad and water gets in the gear box and the upper thrust bearing starts dropping pieces into the ball nut. When I got my tractor I really never though about changing the fluid in the steering box. That's why whenever someone posts about b7100 steering 'popping' or 'sticking' or whatever I tell them to get in there ASAP to change the thrust bearings... I learned the expensive way
Soundguy
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- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
Yep.. on fords, the sector shaft seals let go and lube leaks out to that level, meaning the upper thrust bearing goes dry. Ballnut generally stays lubed, as the ballnut travels to at least the level of the forward sector gear, and it carries oil to it, and the recirculating balls stay lubed. I've rarely seen water in a ford steering box unless the machine was submerged. In any case.. once the upper thrust bearing dies, it lets the ballnut have lots of play where it engages the sector gear.. this adds stress.. if there is a loader.. that's even more stress. Add to the fact that it's a smaller machine anyway, and newer.. and generally has smaller parts than a larger or older machine.. those smaller parts don't hold up under wear as well. The external ball races are beefy and made of quite high quality steel.. I've seen ballnuts taken apart that need the bearing balls replaced from rust or pits, yet the metal shells be pristine.. go figure! An old ford box can run decades on no oil with little damage to the ballnut, sector gears or steeirng shaft.. save the bearing surface, which can be fixed... though they get stiff to turn, and sloppy as all get out.. seal diameters on the sector shafts can and do wear leading some people to braze them up and turn them down, or sleave.. or simply fill the box with light grease like a NLGI 00# grease (which was a ford service idea anyway in 1962 according to service bulletin ).
I have seen sheet metal damage that pushes the hood back, which in turn puts stress ont he steering column, which then breaks the wormshaft.. seen that plenty of times..
soundguy
I have seen sheet metal damage that pushes the hood back, which in turn puts stress ont he steering column, which then breaks the wormshaft.. seen that plenty of times..
soundguy
Steering box repair for Kubota B6100/7100: Check UK supplier for parts?
I had this exact problem develop last summer. Received a lot of good advice here at TBN and spent hours identifying/following up for parts sources. NOBODY in the US had 'em (even if their web site indicated otherwise). Desperate, after dozens of call and email exchanges I found them at a UK supplier:
Newlands Groundcare <sales@newlandsgroundcare.com
Happy to report that the transaction (I chose PAYPAL) went smoothly. Parts were timely direct shipped to my local Kubota Dealer as agreed and my old B7100 is back in business.
Incidentally, This site has a pretty straight forward "guide" for rebuilding the steering box yourself. Ultimately, I knew when I was licked and had the pros at My local Kubota dealer do the work. (I have more guts than brains, mechanical savvy or $. Though I've been able to "fix" a lot of stuff over the years by just tearing in to it, after spending $40 or $50 on new small parts I gave up. Matthew in the service dept. at Coleman Equipment shot straight with me too on this end.
(I'm not a dealer and have no interest in these guy's business. Tony at Newlands was practical, service oriented and delivered as promised. Given the fits I had with my situation and the 6 months down time, I appreciated the help he offered and the fair price. Hope I can help Tony sell a few parts and help someone here on TBN avoid months of down time and frustration.)
Steering box repair for Kubota B6100/7100: Check UK supplier for parts?
I had this exact problem develop last summer. Received a lot of good advice here at TBN and spent hours identifying/following up for parts sources. NOBODY in the US had 'em (even if their web site indicated otherwise). Desperate, after dozens of call and email exchanges I found them at a UK supplier:
Newlands Groundcare <sales@newlandsgroundcare.com
Happy to report that the transaction (I chose PAYPAL) went smoothly. Parts were timely direct shipped to my local Kubota Dealer as agreed and my old B7100 is back in business.
Incidentally, This site has a pretty straight forward "guide" for rebuilding the steering box yourself. Ultimately, I knew when I was licked and had the pros at My local Kubota dealer do the work. (I have more guts than brains, mechanical savvy or $. Though I've been able to "fix" a lot of stuff over the years by just tearing in to it, after spending $40 or $50 on new small parts I gave up. Matthew in the service dept. at Coleman Equipment shot straight with me too on this end.
(I'm not a dealer and have no interest in these guy's business. Tony at Newlands was practical, service oriented and delivered as promised. Given the fits I had with my situation and the 6 months down time, I appreciated the help he offered and the fair price. Hope I can help Tony sell a few parts and help someone here on TBN avoid months of down time and frustration.)
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I had this exact problem develop last summer. Received a lot of good advice here at TBN and spent hours identifying/following up for parts sources. NOBODY in the US had 'em (even if their web site indicated otherwise). Desperate, after dozens of call and email exchanges I found them at a UK supplier:
Newlands Groundcare <sales@newlandsgroundcare.com
Happy to report that the transaction (I chose PAYPAL) went smoothly. Parts were timely direct shipped to my local Kubota Dealer as agreed and my old B7100 is back in business.
Incidentally, This site has a pretty straight forward "guide" for rebuilding the steering box yourself. Ultimately, I knew when I was licked and had the pros at My local Kubota dealer do the work. (I have more guts than brains, mechanical savvy or $. Though I've been able to "fix" a lot of stuff over the years by just tearing in to it, after spending $40 or $50 on new small parts I gave up. Matthew in the service dept. at Coleman Equipment shot straight with me too on this end.
(I'm not a dealer and have no interest in these guy's business. Tony at Newlands was practical, service oriented and delivered as promised. Given the fits I had with my situation and the 6 months down time, I appreciated the help he offered and the fair price. Hope I can help Tony sell a few parts and help someone here on TBN avoid months of down time and frustration.)
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ps... for the newbies like me - I understand these old Kubota steering problems are a bit notorious...the rubber grommet at the top of the steering shaft fails allowing water to enter the steering box/upper thrust bearing. Over time it disintegrates and allows for the ensuing damage. The grommet is dirt cheap and super easy to replace. It was among the parts I could still get at my local Kubota dealer when the problem first developed.
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