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  1. #1
    New Member
    Join Date
    Mar 2012
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    2
    Location
    Moraine, Ohio
    Tractor
    Allis-Chalmers WD

    Default Lower oil seal on bush hog

    I have a bush hog (6') that has a leaking oil seal. I know a lot of guys just pack the gearcase with grease but I want to replace the seal. Do these oil seals pry out from the outside, without removing the shaft, or do you have to take the gears, bearings, and shafts out and drive the seal out from the inside?


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  2. #2
    Platinum Member
    Join Date
    Apr 2005
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    715
    Location
    Erin, Tenn.
    Tractor
    2001 Mahindra 4110

    Default Re: Lower oil seal on bush hog

    Normally they pry out from the outside. This would be a good time to clean the whole gearbox out too with a good solvent. I did mine 14 years ago and it hasn't leaked a drop of 90w since. I replaced both input and output seals and rinsed it out good in our parts washer at the shop. Be sure to put a good film of axle/wheel bearing grease on the seal lip before installing. Good luck !!!
    2001 Mahindra 4110, FEL w/5' & 6' QA buckets & forks for the 5', 6' Atlas boxblade, older 6' Howse rotary, Leinbach 7300 PHD w/9" & 12", MF 2/3 bottom plow, 20"x6' bog disc, KK subsoiler, KK middlebuster, Kubota BL60C 5' tiller, Maschio 6' finish mower.

  3. #3
    Super Member tcreeley's Avatar
    Join Date
    Feb 2011
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    6,129
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    New England Yankee living in Central Maine
    Tractor
    NH TC30

    Default Re: Lower oil seal on bush hog

    My bush hog upper seal for the PTO shaft is similar to a rubber coated round spring that slips into a channel. It had slid off when I put too much oil in and the pressure was too great. I'd replace all of the seals- don't reuse a seal. I used a piece of muffle pipe up against the and tapped it lightly in- 2x4 against the pipe lets you tap it in squarely with a hammer.
    Good luck.
    2003 NH TC30, 5' International Agritech Bushog, Hiller/Bedder, + miscellaneous and sundry items of use.

  4. #4
    Veteran Member dirt ditch's Avatar
    Join Date
    Nov 2007
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    1,848
    Location
    Jayhawker Territory
    Tractor
    which one?

    Default Re: Lower oil seal on bush hog

    You can download Bush Hog Parts and Operating Manuals for there new or old equipment on there website. The parts manuals have an exploded view of the gear box. Hope this helps.

    Bush Hog Manuals

  5. #5
    New Member
    Join Date
    Mar 2012
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    2
    Location
    Moraine, Ohio
    Tractor
    Allis-Chalmers WD

    Default Re: Lower oil seal on bush hog

    Thanks for all the great advice (and the link to the bushhog site), everyone. I appreciate the quick replies!
    I got the old seal out and discovered a bunch of grit and metal particles under the bearing where stuff would normally sift down to the bottom of the unit, so I'm really glad I didn't just pack it with grease and go out cutting. I'll completely disassemble and clean it all up, and then replace the seals. I discovered that it won't be at all difficult to disassemble the gear case, I just need a bigger set of snap ring pliers to get the snap ring off the input gear.

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