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Old Streetfighter Motorcycle Forum Post 10-07-2019, 07:12 AM   #1
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Default Bearing Puller

Hope this is the relevant section. I'm trying to remove the wheel bearings on my GT550 (10mm inner diameter). I have a blind bearing puller, I've been using the bridge but the flared insert keeps pulling out, and i ran out of thread on the tightener. So I used the next size up which was a little too big, so I ground the edges off. This worked better, so much so that the feet on the bridge dug in half an inch into the wood it was resting on. But that finally pulled out too.

The spacer tube that goes through the wheel is flush with both bearings, so there's no lip to get behind with a screwdriver or anything.

Any suggestions? I've heard about people butchering the old bearing race but I'm afraid I'll damage the wheel
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Old Streetfighter Motorcycle Forum Post 10-07-2019, 08:57 AM   #2
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Default Re: Bearing Puller

You could try heating the hub and putting ice on the bearing. May take a few cycles but it could break the corrosion bond the bearing race currently has with your hub.

Maybe a soak with some penetrating oil like PB Blaster.

Whatever you do, make sure you don't have the meat of your palm in the way of the slide weight and the stop when you go all He-Man ultra retard Hulk strength trying to slide hammer it out. It sucks.
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Old Streetfighter Motorcycle Forum Post 10-07-2019, 09:05 AM   #3
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Default Re: Bearing Puller

Thanks I'll try that. Yes I've sprayed penetrating oil behind it. I don't use the slide hammer but I have already squeezed my skin in the flaring part, not enjoyable.

if the heat and ice doesn't work, I've seen the wet rag method (stuffing wet rag or paper towel in so it gets under the bearing). Has anyone tried that?
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Old Streetfighter Motorcycle Forum Post 10-07-2019, 12:38 PM   #4
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Default Re: Bearing Puller

I've seen it as the greasy rag method. Don't think it will work for you. It works when there's a sealed space behind the bearing (blind pocket) to push the rags into, creating pressure to push it out. Don't see how you'd make it work with a through bearing that has an axle spacer - where are you gonna stuff the rag to?

If worse came to worse and you have welding equipment, you can shrink the race a bit by running a bead on the inside. You'd have to blast the rest of the bearing away with a torch or grinder first, of course.

https://www.practicalmachinist.com/v...-works-159553/

https://www.youtube.com/watch?v=w6ZWAnuDAG4
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Old Streetfighter Motorcycle Forum Post 10-08-2019, 05:04 AM   #5
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Default Re: Bearing Puller

Oh yes, didn't think about that! The weld method looks doable, I will give that a go.

Many thanks,
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Old Streetfighter Motorcycle Forum Post 10-08-2019, 12:09 PM   #6
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Default Re: Bearing Puller

Weld sth accross the race then bash it out from that, job jobbed.

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Old Streetfighter Motorcycle Forum Post 10-10-2019, 01:33 PM   #7
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Default Re: Bearing Puller

heat the bearing, dump a shitload of pb or 50/50 tag/kerosene on it, a bunch, then take a piece of steel and bend the end so it's in an L shape, small enough to get inside the bearing, make sure the tip is sharpened. use a conical shaped piece of anything, stick it in the hole with it, and hammer the cone shaped thing into the opening, forcing the L shaped steel between the bearing and rim.pull it out and do the other side. then if it's still fighting put a couple of them in, tape them together, and hammer from the other side. worked for me in the past. but the other option is taking a very strong slightly bent piece of metal, put it through the rim, with the end against the inside end of the spacer, and just hit it hard as fuck sideways with a hammer, usually you can donk the spacer sideways.
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