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Eldon (WA) View Drop Down
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Joined: 11 Sep 2009
Location: Spokane, WA
Points: 7765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Eldon (WA) Quote  Post ReplyReply Direct Link To This Post Topic: Oops!
    Posted: 07 Nov 2016 at 9:40pm
Tilling a sand-packed horse arena with the 185 and 80" Howard rotovator this morning, finished the first pass and something popped and the tiller stopped. Get off the tractor to take a look and the 540/1000 pto stub is hanging out of the tractor. Take it home and take the tiller off and see one bolt missing and the other three sheared off! I knew it was working the tractor hard, but never expected this. Now I get to have fun extracting the three bolts. I guess it was better than breaking something inside....
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CrestonM View Drop Down
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Joined: 08 Sep 2014
Location: Oklahoma
Points: 8452 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CrestonM Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2016 at 9:47pm
I'd say so! Hope nothing major was hurt. Might make sure the splines inside and outside the tractor are ok and not damaged. 
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Eldon (WA) View Drop Down
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Joined: 11 Sep 2009
Location: Spokane, WA
Points: 7765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Eldon (WA) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2016 at 9:58pm
I'm pretty sure the stub is just driven by the 4 bolts, large b/c for the 540, flip it and use the small b/c for the 1000.
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shameless (ne) View Drop Down
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Joined: 08 Jul 2016
Location: nebraska
Points: 7463 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shameless (ne) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2016 at 10:01pm
I broke one of them PTO turn around units on my 7010 bush hogging one day! dealer said he'd never seen one of them break before and gave me one off a tractor on their lot (no charge) and haven't broke it yet. no bolts broke off, was the 540 shaft side.
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DanWi View Drop Down
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Joined: 18 Sep 2009
Location: wttn
Points: 1901 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DanWi Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2016 at 10:14pm
With the heads broke off, if the bolts didn't turn in hard alll the way they should turn out easy with no pressure on them. Used a small drill bit on one on a 200 and it turned it in farther just had ti drill enough of a hole for a small ez out to back it out. Or if you are good with a welder and they broke off flush you could use that trick. good luck 
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shameless (ne) View Drop Down
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Joined: 08 Jul 2016
Location: nebraska
Points: 7463 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shameless (ne) Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 1:13am
also try some left hand drill bits
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JC-WI View Drop Down
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Joined: 11 Sep 2009
Location: wisconsin
Points: 34255 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JC-WI Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 1:23am
Left hand drill bits was going to be my first suggestion,,, and then the second would be to take a small chisel and carefully see if you can tap the end of the bolt to turn them out. Its not like they are rusted in there...
 Yea, good luck.
He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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Dan73 View Drop Down
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Joined: 04 Jun 2015
Location: United States
Points: 6054 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dan73 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 1:43am
Originally posted by JC(WI) JC(WI) wrote:

<table ="tableBorder" cellspacing="1" cellpadding="3" align="center"><t><tr ="msgOddTableRow" style="height:200px;min-height:200px;"><td ="msgLineDevider" valign="top">
   
   <div ="msg">
   Left hand drill bits was going to be my first suggestion,,, and then
the second would be to take a small chisel and carefully see if you can
tap the end of the bolt to turn them out. Its not like they are rusted
in there...
 Yea, good luck.


   </td></tr></t></table>


2x just what I was thinking.
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Amos View Drop Down
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Joined: 11 Sep 2009
Location: Ontario
Points: 1318 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Amos Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 6:33am
Bolt may have been stretched, we have had that happen here or caught it when it was loose and the bolts were stretched, most likely from being over tightened...
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Tbone95 View Drop Down
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Joined: 31 Aug 2012
Location: Michigan
Points: 12016 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tbone95 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 6:42am
I broke a bolt off in mine while installing and over tightened. It came out quite easily.
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MACK View Drop Down
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 7:32am
I would say the bolts were loose to start with.     MACK
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Eldon (WA) View Drop Down
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Joined: 11 Sep 2009
Location: Spokane, WA
Points: 7765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Eldon (WA) Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 9:06am
Originally posted by MACK MACK wrote:

I would say the bolts were loose to start with.     MACK

That could have been the case...I never thought to keep an eye on them, but a tiller is real hard on pto components. The tiller was jumping around a lot, the ground was very hard. I was going to go get my chisel plow and rip it up first as I normally do when the ground is compacted, but the gal said there was pit run fill under the sand and I didn't want to pull up rocks. Note to self....don't try to till horse arenas! I will cross my fingers and check it out further this morning.
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Gerald J. View Drop Down
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Joined: 12 Sep 2009
Location: Hamilton Co, IA
Points: 5636 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerald J. Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 9:39am
Loose bolts on PTOs lead to this failure. JD 3010 and 4010 had much the same problem. On those a rod in the center of the inner shaft shifted the gears between 540 and 1000 RPM depending on the spline extension and if you don't shift it gently and make sure its shifted for the speed that pushes the inner rod, you can break gears inside the transmission tightening the flange bolts, so on those its crucial to keep the bolts tight, checking them regularly.

Left hand drill bits often back a broken bolt stub out when they grab breaking through the other end of the broken bolt. Since the bolts probably aren't rusted in place, they should back out easily. And an easyout should work without breaking if the left handed bit doesn't.

If the tiller was jumping it might be that you were getting down to the stone fill, doing too good a tilling job.

Make sure the hitch and the PTO shaft didn't bottom anywhere in the tiller positioning, that can be hard on PTO shaft adapters and extensions too.

Gerald J.
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Eldon (WA) View Drop Down
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Joined: 11 Sep 2009
Location: Spokane, WA
Points: 7765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Eldon (WA) Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 11:36am
Fixed! All three came right out with a hammer and sharp chisel. Robbed 4 bolts off of a parts tractor, so good to go. Too bad all repairs aren't this easy
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Ky.Allis View Drop Down
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Joined: 31 Jan 2010
Location: Kentucky
Points: 1021 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ky.Allis Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 5:09pm
If I remember right they are Grade 8 bolts.
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Gerald J. View Drop Down
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Joined: 12 Sep 2009
Location: Hamilton Co, IA
Points: 5636 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerald J. Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2016 at 7:52pm
Grade 8 bolts are stronger than grade 5 but some engineers believe grade 8 is more likely to break with a shock load than grade 5. The hardness makes grade 8 more brittle.

Gerald J.
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