Brush hog gearbox repair - How to remove and replace the output shaft seal

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Publicado 2017-08-15

"My gearbox is leaking and I need a new bottom seal!" It's a common problem with, at least from what I could find, very few answers. So many of the brush hogs for sale on Craigslist have this problem as well. Since so few know how to do the repair, this can be a great way to get a great deal on a brush hog and use for yourself or resale.

It would not be possible to show how to change out bottom seals on every brush hog out there. However, the goal of this video is to give that extra small bit of confidence to the reasonably mechanically-inclined person who really wants to give it a try on their own.

Todos los comentarios (16)

@zipzippery hace 6 años

Hey Mike - this is one of the best youtube videos I have seen. You have a great talent. Great introduction (wife's garage.... - I was waiting for a comment when the gearbox oil dripped out onto the rags on the floor...!). To the point (zero extraneous info) great audio and video quality, your such a clear accent and importantly including information which really sets the context for tackling the problem. Way to go...
@capmccarthy2248 hace 3 años

Thanks for the detail at 3:40 describing how to order a seal based on the specs (outer/bore diameter, inner/shaft diameter, width/thickness). Helped me find what I was looking for on my mid-1980's brush hog of unknown origin.
@hihatjas9477 hace 1 mes

Great video. For the stubborn or recessed seals I use an awl and poke a little hole then screw in a sheet metal screw and pull out seal with pliers.
@reloadandaim374 hace 6 años

GREAT VIDEO! THANKS FOR TAKING THE TIME TO MAKE. helped ME REMEMBER HOW TO REPLACE THE SEAL!
@jamiehanson5567 hace 3 años

What a great video. Well done and super informative. I'm rebuilding my 30 year old J.D. 506 and had a metal-smith heat & pull dents and caved-in rear plates, fixed torn metal and beafed up the tail wheel. I wanted to wire-wheel the rust and paint it so just pulled the gearbox off and wondered, what now. And there you were=)). I'll order the seal tonight before it becomes discontinued by daybreak and get-er-done. Thanks for the video.
@flynryan3053 hace 1 año

Thanks bud, just what i was looking for.
@timgilchrist3065 hace 3 años

Great. I spent most of afternoon trying to figure out how to take the seal out and you showed me in 2 minutes. Lol
@P61guy61 hace 3 años

Excellent. Thank you for posting
@annhorsman9794 hace 4 años

Thank you for this vid! I looked for this to figure out how to remove the old seal. I can't just lift it out. Now that I have watched, I see my old Bush Hog does not have the washer between the seal and the clamp. I suspect that is why it has been leaking as I paid someone to repair it just a few years ago. I will now check and see if there is indeed supposed to be a washer there. Glad this was here as it really helped.
@rpashoukos hace 5 años

Great video man, thanks.
@lluther9282 hace 2 años

Thanks! I guess this is my next farm equipment project. My 6ft Razorback mower is leaking badly after only about 50 hours.
@0044512 hace 2 años

Great video, thanks.
@justjay3514 hace 6 años

Your wife owns the garage? Does she own the entire house, or do you own any of it? Lol
@onceANexile hace 1 mes

Banana republic.
@grasscutter88 hace 1 año

Your wifes garage? Atleast he uses the proper terminology. lol