Mud-club
Vehicle & Technical => Discovery => Topic started by: Paulsou on August 17, 2008, 20:13:45
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Just went to remove hub to exchange hub bearing, only to find that the outer bearing has welded itself to the shaft, i have broken hub puller, tried chiseling but will not move, anybody got any ideas how i can get the hub off without damaging it, all ideas welcome, the neighbours are getting fed up with the cursing.
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tell the neighbours not to complain unless they know a better way of doing it 8-[
basically just keep chissling... it WILL come. just takes a bigger hammer!
careful grinding? or at least to start off the groove for the chisel?
hope this helps, Rob
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You could trying to heat the bearing racer up a bit in conjunction with the chiselling, might do the job
My other option if it was me would be to replace the whole unit complete (then you can strip off the good bits later and throw the hub away), but then I can get access to complete hubs
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BE very careful when chisseling the bearings..... they have been known to shatter, and when they do, bits fly..... and they are VERY sharp!!!!!
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In the past iv resorted to putting the wheel back on with the hub nuts off and laying on my back and kicking like hell, which worked. just make sure its all supported well.
worth a try!
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mine did the same, i used a big hub puller tightened it up, then kept smacking the back of the hub with a lumphammer but put a piece of wood on to protect it, i ended up putting a another stub axle on :(
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If it's like the picture above IE the inner bearing then all is not lost, you can pull the hub away leaving the oil seal and inner half of one bearing on the stub axle.
If the bearing is stuck because it's seized then chances are it's spun on the stub axle and ruined it anyway. If it's stuck due to rust then careful polishing will save the stub and also help the oil seal do it's job (it perhaps hasn't been doing so of the bearing is rusty).
If this is the case then put some eye gogs on and vent you spleen as they say, let rip, let it have it. Smashing the old bearing though dangerous just makes me feel better. You can grind it off too BTW.
If it's the outer bearing then I guess you can't even get the hub off. Oh dear, that's much less common (the outer bearing tends to float a little which stops it sticking) and much much harder to shift.
I'm told that electric arc welding will crystalise the bearing metal and make it more brittle, that may help you.
Alternatively if you can get inside and smash up the roller bearing cage then you could perhaps manipulate the rollers to the bottom half and remove them, deconstructing the bearing if you like. This would allow you to pull the hub over the inner race, then proceed as above.
I have found in the past that SKF bearings are far harder to damage with a chisel than hong-kong-fuey ones. Just a though :-k
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Remove the bearing rollers and bearing cage - the hub will then come off - leaving the track stuck to the axle. With the bearing rollers out of the way - the inner track is small enough to pass through the outer one. The more worn the bearing are - the easier it is to do this. Otherwise you will have to break the lip off in one place in order for the rollers to come out.
Les.
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The last time I had this I went through hell trying to get the bearing off! The stub axle was marked, but I decided it would be OK with enough grease :doh: I ended up doing the job again a month later and replacing the stub axle! Personally, for the price of the sub axle! Thats what I'd do.
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Had one weld its self to ,y front stub axle gave up and bought a new stub axle. much easyer then trying to get the old one off