Rear wheel bolts in cast iron center

My goodness this has turned into a job. I am sure these bolts haven't been removed for 30 years. Two nuts came off. Cut the others off. Tire is off of the rim, rim is now off of the cast center. Have 3 bolts still in the cast center. Have heated the cast to a point, didn't want to crack it. Cut the head off of one bolt, removed the clip, drilled through the bolt up to a 1/4" drill bit. Still can't get it out. For the past month every time I walk by this tractor I spray lubricant on these bolts. Any and all tips and tricks will be appreciated as this is the first of two wheels.
 
You say that you have heated the cast iron, have you tried heating the bolt. I had the same issue on a case tractor and was lucky enough to
be able to get at both ends of the bolts and after I heated them red hot and let them cool down I was able to get them to move. I was able to
get mine to move a little with a break over bar and socket then put an impact on them and rock them back and forth until they come out. If
you break one off you might be able to weld something onto it to try it again there are a lot of good videos on you tube for removing bolts.
 
If you have a hole drilled through the
bolt you can cut it out with a torch. Turn
your oxygen pressure up to about 50psi.
Heat the bolt and blow the slag through
the hole you have drilled in it. It might
help to enlarge the hole to 3/8 or even
1/2. The larger the hole the easier it is
to get burned out
 
(quoted from post at 12:35:18 05/16/23) You say that you have heated the cast iron, have you tried heating the bolt. I had the same issue on a case tractor and was lucky enough to
be able to get at both ends of the bolts and after I heated them red hot and let them cool down I was able to get them to move. I was able to
get mine to move a little with a break over bar and socket then put an impact on them and rock them back and forth until they come out. If
you break one off you might be able to weld something onto it to try it again there are a lot of good videos on you tube for removing bolts.

I will give that a try Saturday weather cooperating. Thanks.
 
(quoted from post at 13:47:53 05/16/23) If you have a hole drilled through the
bolt you can cut it out with a torch. Turn
your oxygen pressure up to about 50psi.
Heat the bolt and blow the slag through
the hole you have drilled in it. It might
help to enlarge the hole to 3/8 or even
1/2. The larger the hole the easier it is
to get burned out

That was my original intent on drilling the hole. Just chickened out not wanting to ruin the cast piece by mistake. Thanks for the vote of confidence.
 
(quoted from post at 13:08:22 05/17/23) Had some that been in that long or longer. Took air chisel with punch bit and was surprised how easily they came out.

Tried it, no go. Thanks though.
 
Try heating the bolt red hot, then after it cools a little let a candle melt on it then let it cool all the way down. Then try it when it's cold.

This post was edited by J.Wondergem on 05/18/2023 at 07:58 am.
 
(quoted from post at 07:55:30 05/18/23) Try heating the bolt red hot, then after it cools a little let a candle melt on it then let it cool all the way down. Then try it when it's cold.

This post was edited by J.Wondergem on 05/18/2023 at 07:58 am.

I have read of this method and completely forgot about it. I have enough stuck bolts to try all of the suggestions and will try this one also. Will let you know the results. Thanks.
 
It's not really that bad to just drill them close to size and work the remainder out with an extractor, punch, or by whatever means you prefer.

http://www.wwdsltd.com/files/BoltFailure.jpg

BoltFailure.jpg
 

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