Kubota L185 PTO slipping after hitting log: Kubota Review  -- Kubota Tractors Discussion Forum and Review Kubota L185 PTO slipping after hitting log: Kubota Review -- Kubota Tractors Discussion Forum

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 11-26-2003, 18:17 Post: 69722
b_w881



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 Kubota L185 PTO slipping after hitting log

PTO spins up to speed slowly with bushhog under no load. It bogs down to a stop very quickly when bushog under load in grass. No noise or indication of anything broken. Tractor functions normally otherwise in forward and reverse gears. It apparently has a sprag type overrun clutch, according to the documentation that I have. Any ideas on what could be wrong?

Thanks,
Bracken Watts






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 11-26-2003, 18:28 Post: 69724
Chief



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 Kubota L185 PTO slipping after hitting log

Can you say pto clutch kaput!!! ? I no longer have my L245 shop manuals but I don't remember too much about clutch adjustments the would effect the pto. Sounds to me like the pto clutch is slipping. Ronnie at Tractorsmart may be able to offer you some good advice, but it does not look good. Hope you can fix her on the cheap. Good luck!






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 11-26-2003, 18:35 Post: 69725
b_w881



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 Kubota L185 PTO slipping after hitting log

Thanks. I'll try to track down Ronnie at TractorSmart.






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 11-26-2003, 19:00 Post: 69727
Chief



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 Kubota L185 PTO slipping after hitting log

Ronnie was VERY knowledgable and helpful when have dealt with him when I had my L245. I bet he can give you the best price on parts if you need them. Good luck.






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 11-27-2003, 06:34 Post: 69761
TomG

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 Kubota L185 PTO slipping after hitting log

Sure does sound like a clutch but broken shafts can sometimes do that. So now I'll sound mindless but only because it's a hopeful idea. I don't suppose there's a chance of a broken shear pin or blown slip clutch.

Clutches more often go when they've been run under high loads for awhile or repeatedly. A shock caused by hitting something is supposed to break a shear pin or slip a clutch and so I'd check for that if you haven't already. When I break a pin on my auger it acts exactly the same way.






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 11-27-2003, 10:58 Post: 69790
b_w881



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 Kubota L185 PTO slipping after hitting log

The shear bolt was cut into but not broken. It was a grade 5 bolt. If the shaft was broken, I don't think it would spin up at all. That's what's confusing to me. It does spin up but slowly like it is slipping. There's not noise either to indicate broken gears. There's no external slip clutch although I am considering it in the future after this is repaired. Thanks for the input.






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 11-27-2003, 11:06 Post: 69793
Murf

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 Kubota L185 PTO slipping after hitting log

It sure (unfortunately) sounds like the PTO clutch is shot.

The log may not have done any real damage, it may just have been the last straw. I have seen them so burnt up that they turned brittle, then the next time you hit something sudden like that the linings just shatter and fly out, leaving just steel on steel.

The most likely culprits for eating PTO clutches are snowblowers and rototillers. A previous operator may have done it in long before you ever set eyes on it.

Best of luck.






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 11-27-2003, 11:12 Post: 69794
Chief



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 Kubota L185 PTO slipping after hitting log

If you hit a log and the shear pin bolt did not break and the rotary cutter was stopped or slowed by the log while the tractor was at pto operating rpm. VERY good chance that the pto clutch slipped and burned up. It may be a blessing i disguise as if the shear pin bolt did not do its job the clutch may have saved the pto power train from serious damage. You may not have the correct shear pin bolt installed. Verify what is the spec shear pin bolt.






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 11-28-2003, 06:09 Post: 69823
TomG

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 Kubota L185 PTO slipping after hitting log

It sure wouldn't take long to burn up a clutch if the shear pin didn't break and the mower was stopped.

I'd sure check out what shear pin is supposed to be used in the cutter and also that the cuter isn't oversized for the tractor. Shear pins usually go with the implement rather than the tractor. You can find almost any grade used but grade-2 is the most common--especially if it's around a 5/16" size. The times I've broken pins on my blower or auger, they've broken cleanly. I have heard that the pinholes can get egg-shaped on units where pins are broken repeatedly and then the pins may not break cleanly. I've also heard that loose or corroded pins can do the same. However, all this after the fact stuff doesn't do much good for now. Good chance it's the clutch and that's pretty painful and not good to hear.

It's not uncommon for a shaft or coupler to be broken and the output still rotate under very light loads. It's the sort of thing that can complicate diagnosing broken axles. The tractor will move in 4wd but not in 2wd and each rear wheel seems powered when jacked up. My auger does the same. The first time I broke a shear I though I had blown the pto clutch.






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 11-28-2003, 14:53 Post: 69870
b_w881



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 Kubota L185 PTO slipping after hitting log

Just got back from taking the tractor to the shop. They say it is the clutch and the parts will cost $1200.00!! Does that sound right? Anyone out there knowledgable about the price of Kubota parts? I only paid $2500.00 for the tractor.






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Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

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