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  1. #1
    New Member
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    LS 4145

    Default Unable to disengage drive line from from gearbox...

    ...after about 20 hours of mowing. Even with shear pin removed the drive line is more or less frozen to the gearbox input shaft.

    Is there a trick to getting these things off? Apply a little heat, perhaps? I'm reluctant to just start hammering on it until I know what I'm doing.

    Seems like this could be a common problem - would appreciate any advice on how to proceed!

  2. #2
    Gold Member topbuilder's Avatar
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    May 2012
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    Lone Stare State
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    New Holland 345D shuttle, Rayco RG 50 Super, Southern Tractor (Hinomoto) E-280

    Default Re: Unable to disengage drive line from from gearbox...

    Why are you removing it? Just curious. I'd shoot it up with a little penetrating oil and whoop on it with a heavy brass punch.

  3. #3
    Platinum Member Loadstar's Avatar
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    Ford 640

    Default

    Mow some saplings, that removes mine with the shear pin in

  4. #4
    New Member
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    Default Re: Unable to disengage drive line from from gearbox...

    Quote Originally Posted by Loadstar View Post
    Mow some saplings, that removes mine with the shear pin in
    Why are you removing it? Just curious.

    Just want to clean it up, apply some grease and stow it for the season as opposed to leaving it out.

  5. #5
    Elite Member DT86's Avatar
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    Kubota 9540, RTV 900 and David Brown 885.

    Default Re: Unable to disengage drive line from from gearbox...

    What exactly are you working on?

  6. #6
    Super Star Member LD1's Avatar
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    Kubota MX5100

    Default Re: Unable to disengage drive line from from gearbox...

    Did you take the snap ring off?
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  7. #7
    Super Member newbury's Avatar
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    Kubota's - B7610, M4700

    Default Re: Unable to disengage drive line from from gearbox...

    Do you have a manual?
    My rides - '95 Kubota M4700 w/ PEC, LA1001 FEL :'07 B7610, LA352 FEL, Bush Hog SBX 48 box blade, '09 Woods BH70-X w/ 16" bucket and thumb, 3pt pallet forks, Dale Phillips PHD, Jinma 8" chipper, 2 Piranha's, Winco 12KW PTO generator, Howse plow, 5' KK tiller, 5' Big Bee cutter, with a 2002 7.3L Ford F350 CC DRW 4x4 and '07 18' Hudson HSE Deluxe trailer - 5 Ton to haul it all
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  8. #8
    Silver Member
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    Lawrenceburg Ky, Huntsville Alabama
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    Ford Dexta, Branson 6530c Yanmar Lx490 Power reverser

    Default Re: Unable to disengage drive line from from gearbox...

    Quote Originally Posted by Loadstar View Post
    Mow some saplings, that removes mine with the shear pin in
    I have had the sheer bolt heads to break off but the bolt not completely sheered. Impossible to get holes lined up so you can drive the rest of the bolt out. There was distorted bolt material still in there that would not let the holes line up good enough for an exit path. I went ahead and mowed an area that usually resulted in several sheers but it would not finish off. Had to deliberately catch a stump I knew about and start beating it to death. Finally completed the sheer and could do the usual removal process after allowing the shaft to spin a bit to wipe the bolt clean.

  9. #9
    Platinum Member Loadstar's Avatar
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    Ford 640

    Default

    Quote Originally Posted by drey55 View Post
    Why are you removing it? Just curious. Just want to clean it up, apply some grease and stow it for the season as opposed to leaving it out.
    Not fully removing it but it would not be hard to. About every 5th shear bolt I break I slide pto shaft back and smear some anti seize on input shaft to keep it easy moving for changing shear bolts

  10. #10
    Platinum Member Loadstar's Avatar
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    Ford 640

    Default

    Quote Originally Posted by Raised on a Deere View Post
    I have had the sheer bolt heads to break off but the bolt not completely sheered. Impossible to get holes lined up so you can drive the rest of the bolt out. There was distorted bolt material still in there that would not let the holes line up good enough for an exit path. I went ahead and mowed an area that usually resulted in several sheers but it would not finish off. Had to deliberately catch a stump I knew about and start beating it to death. Finally completed the sheer and could do the usual removal process after allowing the shaft to spin a bit to wipe the bolt clean.
    mine always shear completely. Top of cutter is piled with little bolt sections. I always get the nut back off of sections if they don't fly. Got to save a penny where you can

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