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post #1 of 9 Old 10-31-2018, 10:07 PM Thread Starter
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input gearbox leak repair

Hi All,

Does anyone have experience taking apart a leaking bush hog input gearbox assembly?

The drawing is attached.

I took off the gear nut (#4) but then nothing moves. I thought it would slide out. I need to replace the grease seal (#10).

I don'really want to heat and hammer things, unless I have to.

Any advice is appreciated!
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post #2 of 9 Old 11-01-2018, 10:57 AM Thread Starter
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Re: input gearbox leak repair

Here is a photo. Maybe there is some type of puller that should be used? Something I can put behind the gear and move away from the housing by pushing against it with a nut and bolt?
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post #3 of 9 Old 11-01-2018, 11:49 PM Thread Starter
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Re: input gearbox leak repair

A small step forward, I got the key out. Does anyone know which direction this is supposed to come apart? Can I hit the shaft on the opposite side of the gear? (The shaft that goes into the slip clutch.)
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post #4 of 9 Old 11-02-2018, 02:46 PM Thread Starter
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Re: input gearbox leak repair

OK, the old seal is out (40min of messy prying...puller did not work, it was baked in), but figured out what to put in it as the same seal that was used is no longer made. See pictures of old double seal and new doubled up single seal. I will see this weekend if it works.
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post #5 of 9 Old 11-04-2018, 06:26 PM
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Re: input gearbox leak repair

Ya know fixin it was a good thing but most everyone I know has leaky bush hog gear box at one time or another and it is just easier fill them up with corn head grease. Won't leak and actually gives better lubrication for the gear box.

Finding the old double lipped seals can be a challenge so most will do what you did and double up the seals.




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post #6 of 9 Old 11-05-2018, 10:26 AM Thread Starter
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Re: input gearbox leak repair

Quote:
Originally Posted by JohnW View Post
Ya know fixin it was a good thing but most everyone I know has leaky bush hog gear box at one time or another and it is just easier fill them up with corn head grease. Won't leak and actually gives better lubrication for the gear box.

Finding the old double lipped seals can be a challenge so most will do what you did and double up the seals.
Never heard of corn head grease so thanks for the tip! I need to look into how it can be drained, if it is greasy it won't just flow out like the oil I am sure...
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post #7 of 9 Old 11-05-2018, 07:02 PM
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Re: input gearbox leak repair

Get @ your local John Deere dealer, plenty cheap enough to get it from them and they ALWAYS have it in stock. It is actually grease #0 and it does flow easily when warm. There is a short JD video on youtube that shows how well it works on gear boxes.




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post #8 of 9 Old 11-06-2018, 01:40 AM Thread Starter
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Re: input gearbox leak repair

The next time it leaks I will try!
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post #9 of 9 Old 01-27-2019, 08:29 PM
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Probably too late but always grease between the seals so the outer one doesnt get munched.
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