Bearing install

Patsdeere · May 11, 2012

I have a bearing that I need to install on a governor of a JD A while the governor is installed on the tractor. I know it will be harder this way, but am avoiding pulling it all apart to get at it. Can I (and if I can how far) heat the inner race that goes on the shaft? I figure it is probably a pretty tight fit, but haven't pulled the old one off (as it isn't where I can get to it except an occasional weekend) so I really don't know how hard it is on there. Any tips on how to get the shaft cold to help make it go on easy?

Thanks.

Wayne in MN · May 11, 2012

Heat the bearing in oil so you do not take the temper out of the races. Suspend it with a wire so it does not touch the metal container holding the oil.

Patsdeere · May 11, 2012

Ok, but to what temp? 200 or ??

Uncle Ernie · May 11, 2012

I looked into how hot you can get a tapered roller bearing before you risk damage and found 350 degrees f. to be the safe high temp. I heat bearings to fit onto shafts regularly by heating them in a toaster oven set to 350* for about 20 minutes.. Works slick.
Another great trick is to set the bearing on a 100 watt light bulb for about the same ammount of time.A machinist friend showed me that trick. Switched to the toaster oven as I heat several bearings and a sleeve at the same time for most of the jobs I do.

Mike M · May 12, 2012

If the left hand one is bad the right hand one surly is too and check the housing for wear in the area of that rh race.

I'd do it right and pull it all down.

Even a trouble light bulb with that bearing sitting on it should heat it enough to go on the shaft.

randy hall · May 12, 2012

set the fry daddy full of hydraulic oil at 275.

Bearing install

Patsdeere

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Wayne in MN

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Patsdeere

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Uncle Ernie

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Mike M

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randy hall

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