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Question on bearing removal

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Bob - KS

12-17-2001 08:19:43




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I'm fighting with a bearing stuck in the rear axle housing on a GMC half ton. While I know it's not a tractor, I'm sure you folks have been in a similar situation before. I can't get the outer race out of the axle tube. No snap ring or retainer showing either in the manual or in the housing. I've put on about as much pressure as I think I can without bending something with a bolt style puller, and have worn the slide out on a 5 lb. slide hammer puller and this bearing race hasn't given any indication it's going to budge. Of course by now the rollers are all out so I'm down to just the outer race. It does have the lip (that the rollers ran in) still intact on the back side and most of the front side. The options that I can think of are to break the race, cut the race with a die grinder, or build a heat shield for the not so conveniently located gas tank and heat the housing (remember I'm not a pro so tend to be overly cautious with fuel tanks). I'm leaning towards breaking the race since I'll have fewer metal bits to deal with as opposed to grinding on it with a die grinder, and I don't have to worry about that gas tank just behind the 'wheel' on one side. Do you guys use a standard chisel to do this or do you use a big 'dot' punch. Which will put the most force on the race and therefore I assume crack it easier. I'm a weekend warrior so would prefer to swing that hammer the least number of times ;). And if there's a method I haven't thought of - please fill me in. I am very open to new ideas.

Thanks in advance,
Bob

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South 40

02-20-2002 06:08:50




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 Re: question on bearing removal in reply to Bob - KS, 12-17-2001 08:19:43  
The same trick works on inner races stuck on a shaft, weld around the outside but do not add the water, it expands and will slid right off.

Have top be careful here, since you will be working with a hot piece of metal.

Good to see someone sharing these lil tricks, they can save tons of hours, and knuckles.



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Jerry S

12-17-2001 11:02:30




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 Re: question on bearing removal in reply to Bob - KS, 12-17-2001 08:19:43  
I had the same problem on a chevy. I didn't have a welder but I got a little grinder for the end of my drill and cut it through. Took a whole 6 pack (beer) to do it. Nothing else would budge it. I learned that the best answer would have been to take it to town and pay for someone else to do it. I don't envy you. Good luck.



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Old john deere

12-17-2001 09:52:37




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 Re: question on bearing removal in reply to Bob - KS, 12-17-2001 08:19:43  
I am no expert, but have seen this done and done it myself. Take an arc welder and weld a bead all the way around the outside race on the inside surface. As soon as welding is finished throw cold water on the race. This will skrink the race in the housing. I saw a machinist do this on a bearing I had fought with for hours. When he cooled the race, he reached in with his fingers and pulled the race right out. It should at least be loose enough to pull with the slide hammer.

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Bob - KS

12-18-2001 17:50:09




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 Re: Re: question on bearing removal in reply to Old john deere, 12-17-2001 09:52:37  
Sir - I don't know who you are but you are a hero to me. This tip of yours is something - I welded a bead on that bearing race I was fighting with using a garden variety 6011 rod and threw water on it as you said. And while I was trying to get the slide hammer hooked up the race popped out when I pulled the fingers up against it. I could have picked it out by hand. I had hammered on that thing for two days with no give at all. If we ever get a chance to meet expect to have your hand shaken a few dozen times and at least a couple of beverages of your choice. For now please accept my sincere thanks for saving me a lot of grief and teaching me something I know I'll need to use again.

Bob

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oldjohndeere

12-20-2001 16:22:08




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 Re: Re: Re: question on bearing removal in reply to Bob - KS, 12-18-2001 17:50:09  
Hey Bob Your reaction is the same as mine when I carried a combine to a machine shop after I had pounded and cussed for several hours. He had it out in five minites and all I could say was I`ll be !!!!. I am in Ga. but my wife is from Valley Center Kansas. Where are you in Kansas. Glad I could Help. Lloyd



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