how to remove a shaft seal?

Northvale - PA · Nov 23, 2014

my JD 336 baler shaft has a slight bend to it, so I thought I would remove it and get it straightened during the off season (now). To get the shaft out, I had to remove the shaft bearing seal. I basically dug it out with a screw driver, ruining it. Is there a right way to get one out?

James Babcock · Nov 23, 2014

I have tried this a grand total of one time, and it worked great. Your mileage may vary.
Car motor oil seal removal

Bob · Nov 23, 2014

Which shaft is bent? I'm gonna GUESS the input shaft to the main gearcase???

NOT sure what you were doing... trying to save an oil seal for re-use???

If so, I think that would be a "first" as most of us who repair stuff every day would never consider that... if you got the seal dug out without scarring up the shaft, simply replace it with a new one when you "go back together", and all will be well!

NCWayne · Nov 23, 2014

They make a tool to remove seals with a slide hammer. It's basically a sheet metal screw that you drill into the seal body and pull it out.

They also make a seal puller that is basically hooked on one end and has a spot on it to hold as well as hit with a hammer. To use it you put the small, hooked end through the seal opening and hit it with a hammer to pull the seal.

Something I have had to do on many occasions is to use a regular sheet metal screw to pull the seal. Basically get a hole started with an awl, or whatever you've got on hand, and screw the screw in through the hole. When it hits the housing no the back side it will typically push the seal out. Unfortunately there are seals in so tight that the hole will strip before the seal moves. In that case a combination of that, and what it sounds like you did to the seal you removed usually works.

Beyond that' I have never found one, certain tool, or way to get a seal out, and never a way to do it that leaves the seal reusable.

flying belgian · Nov 23, 2014

Well I'll be darned.

Mike (WA) · Nov 24, 2014

I had never heard of that method, but looks like it works great. Since I'm pessimistic by nature, I'd probably do 2 screws, at 180° from each other, to make sure it didn't bind.

Learn something new every day. I'll join the others in saying you should never reuse a seal (even if by some miracle you got it out undamaged). It's a "one use item", like cotter pins, head bolts and lock washers. Go new to be safe.

Anonymous-0 · Nov 24, 2014

(quoted from post at 23:12:26 11/23/14) I have tried this a grand total of one time, and it worked great. Your mileage may vary.
Car motor oil seal removal

Been doing this for years.

Chilidawg · Nov 24, 2014

Lisle 58430 is a good unit. A search on the interwebz will find one for less than $15.

Anonymous-0 · Nov 24, 2014

(quoted from post at 23:19:40 11/24/14) Lisle 58430 is a good unit. A search on the interwebz will find one for less than $15.

Never seen one of those before, looks like a good tool.

Here it is in action.

https://www.youtube.com/watch?v=BtsGU2nLrJg

how to remove a shaft seal?

Northvale - PA

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James Babcock

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Bob

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NCWayne

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flying belgian

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Mike (WA)

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Anonymous-0

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Chilidawg

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Anonymous-0

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