Backhoe safety: Back Hoe  -- Tractor Attachments Implements 3ph Discussion Forum and Review Backhoe safety: Back Hoe -- Tractor Attachments Implements 3ph Discussion Forum

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 06-19-2000, 01:31 Post: 17308
Patrick J Dempsey



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 Backhoe safety

In reading the posts I have a concern on 3ph mounts. JD has a plate,slots and pins while Cub Cadet speaks of stable and safe subframe mount. Can anyone comment as concerns NH Boomers and Kubota.






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 06-20-2000, 08:12 Post: 17333
Darryl Gesner



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 Backhoe safety

I have a JD #7 backhoe on my 855. It is a quick-attach subframe mount and I don't see how it could ever come loose IF installed properly.






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 00-00-0000, 00:00 Post: 17355
Patrick J Dempsey



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 Backhoe safety

Thank you. Subframe and slot to bracket seem to be much safer than the 3ph. Does anyone have knowledge as to whether these type of mounts are OEM on the NHBoomer or the Kubota compacts. If not, are there alternative choices?






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 06-21-2000, 08:04 Post: 17359
TomG

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 Backhoe safety

Backhoes are dangerous no irrespective of the type of mount. There are a number of backhoe safety discussions in the archives.

The main added risk of 3ph mounts is the possibility of the lift raising with somebody in the hoe seat. However, I believe that all 3ph mounts are designed with lift lockdowns. The lift cannot raise if the mount is properly installed and adjusted. True, it does take some attention. I check the bolt tightness and stabilizer adjustment on my 3ph mount several times a day when I dig. Also true that a sub-frame may be a little safer. The hoe is closer to the tractor, so there's more of the tractor that surrounds the operator than with a 3ph mount.

As far as I know, the main advantage of sub-frame mounts is that they are less stressful on the tractor--especially sub-frames that mount to the middle of the tractor frame. However, I'm not sure how much less stressful a sub-frame mount that doesn't attach to the middle of the tractor frame is than a 3ph mount. The main advantage of a 3ph mount is the easy on and off and lack of additional mount hardware on the tractor.






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 06-21-2000, 09:42 Post: 17363
Roger L.



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 Backhoe safety

The best backhoe mounts for safety and for the tractor/hoe stability that I have seen are the subframe type. A big disadvantage to my 3 pt mount is that when I lift it up to move, the heavy backhoe is carried high up relative to the weight of the tractor. Sort of like having a full bucket carried too high. The best of the mounting schemes seem to be the ones which use the 3 pt to lift the backhoe onto the subframe - where it is then locked down. My favorite subframe was one I saw some years ago on a larger tractor where the subframe for the hoe and the front loader were one and the same.






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 07-31-2000, 13:49 Post: 18408
Ed



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 Backhoe safety

I know this is an old thread, but the 3ph mount depends on the oem....woods hoes use 1/2 thick steel bars at each 3ph lift corner and run up to the toplink. Therefore, the backhoe could never be lifted - it would only move as much play was in the top link pin.

Also, I have a woods on my cub tractor, it uses the return line from the loader to supply hyd oil, when the return line from the loader is unplugged, there is no oil going to the 3ph lift...weird huh?






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 08-01-2000, 05:10 Post: 18428
TomG

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 Backhoe safety

The 3ph on my Ford 1710 also does not operate when the remote is working. I think that's the way the priority control valve works on a 1710, but other tractors may have a different priority set up.

I run my 3ph hoe off a rear pair from a 3 section spooling valve by holding the valve open with a bungie cord. The rear pair is the first section on the valve. When the hoe is getting pressure, neither the 3ph nor the loader operate. I think this operation is normal for my tractor.

It seems odd, but it probably does make sense. For example, the 3ph is locked down with the hoe mounted. It would be hard on the hydraulics and on safety if the lift tried to raise when the hoe was in operation. For that matter, I don't think I'd want a critical loader operation interrupted if I accidentally bumped the 3ph lever






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Discussion Boards > Active Subjects > Messages as Posted > Back Hoe Forum

Thread 17308 Filter by Poster:
Darryl Gesner 1 | Ed 1 | Patrick J Dempsey 2 | Roger L. 1 | TomG 2 |




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