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  1. #21
    New Member
    Join Date
    Jan 2013
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    3
    Location
    Ramona CA
    Tractor
    JD

    Default Re: Brush hog driveshaft snapped in 1/2!

    Me too, today. Feel like a dumbass. what was the remedy?

  2. #22
    Silver Member denverdave66's Avatar
    Join Date
    May 2012
    Posts
    154
    Location
    Missouri
    Tractor
    2012 John Deere 1016, FEL, 60"MMM

    Default Re: Brush hog driveshaft snapped in 1/2!

    I just replaced it with a new bolt be sure and use the same size bolt and not buy one that is harder. I rather bust a $2 bolt than a $$$ driveshaft.

    2012 John Deere 1026, 60"MMM, FEL, LandPride box scrapper, 52", LandPride RCR1248 rotary cutter,Landpride RB1560, Landpride quick hitch, RachetRake, Trac Vac 880, Sthil FS90 trimmer/brushcutter, Stihl MS310 chainsaw, Stihl BR600 Magnum Backpack blower, Stihl 180c chainsaw

  3. #23
    New Member
    Join Date
    Jan 2013
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    3
    Location
    Ramona CA
    Tractor
    JD

    Default Re: Brush hog driveshaft snapped in 1/2!

    Bolt?

    I have a easy attachment device. I dropped the bushhog and pulled away without disconnecting the driveshaft from the PTO. It pulled the shaft in two. Is it possible to hammer the shaft back in or will I need a more sophisticated, expensive fix?

  4. #24
    Gold Member
    Join Date
    Feb 2011
    Posts
    437
    Location
    Parish NY
    Tractor
    555DTC Farmall 200

    Default Re: Brush hog driveshaft snapped in 1/2!

    No need for anything it should just slide back together. Now would be a good time to clean the shaft and liberally apply grease.

  5. #25
    New Member
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    Jan 2013
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    Location
    Ramona CA
    Tractor
    JD

    Default Re: Brush hog driveshaft snapped in 1/2!

    Thanks.

  6. #26
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    12,837
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: Brush hog driveshaft snapped in 1/2!

    Quote Originally Posted by Rothebob View Post
    Bolt?

    I have a easy attachment device. I dropped the bushhog and pulled away without disconnecting the driveshaft from the PTO. It pulled the shaft in two. Is it possible to hammer the shaft back in or will I need a more sophisticated, expensive fix?
    Rothebob, when the "bolt" was referred to, what is mean is the "shearbolt" on the connection point of the gearbox on the rotary cutter (bushhog). There are two kinds of safety devices on the rotary cutters to prevent damage to the PTO shaft itself or its internals. There is a device called a "slipclutch" that is a spring loadec clutch assembly that will allow slippage if the rotary cutter blades hang up on something. It is adjustable, and needs maintenance (see manual if you have one). and there is the shearbolt. On the shearbolt arrangement the input shaft to the rotary cutter gearbox is a smooth round piece of metal stock without splines. It does have a hole drilled thru it and the corresponding yoke or collar on the PTO shaft slides over this smooth round shaft and you must align the predrilled holes and place a 1/2 inch shearbolt (a low quality bolt, usually a grade 2 common bolt) thru these holes to prevent the rotation of the yoke on the smooth shaft. When the blades encounter an immovable object (big stump or rock) the shear bolt does just that it shears off and relieves the strain on the PTO and drive line. Think of it as a fuse for electricity. You replace the bolt with the same low grade bolt and go on mowing a little wiser than when you started As you have seen a PTO driveline shaft consist of 2 pieces that slide together (with lubricating grease, be sure to lube at least every mowing season) This allows the shaft to telescope together and further apart as you move your 3pt hitch up and down the length usually increases as you lower the mower and decreases as you raise your mower. It is common to have a minimum of 1/3 of the shaft length in engagement at all times. But on the other hand you do not ever want the possibility of the shaft being so long as in any circumstance to put pressure on the tractors PTO shaft and bearing area when it is raised and shortened like for instance when backing up a very steep incline and the rotary cutter raising beyond the point the 3pth hitch would raise it. This can damage the PTO shaft and bearings.

    James K0UA
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


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