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Post by mikeley on Apr 21, 2014 9:28:35 GMT 1
Any tips on how to remove the gearbox bearings that are sat in blind holes as you cannot punch them out from behind?
I'm guessing there are special bearing pullers you can buy but does anyone know another way?
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Post by gazbeemer on Apr 21, 2014 10:29:30 GMT 1
Is there any space behind the bearing at all so u can hook onto it and use a slide hammer affair. If it has some space I may have a tool u can borrow
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Post by Roofmonster on Apr 21, 2014 11:01:23 GMT 1
If you can find an expanding bolt that fits in the bearing then they will grip the bearing enough to pull them out.
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Post by mikeley on Apr 21, 2014 15:05:40 GMT 1
Thanks guys. Some good ideas there.
Gary, I will bring the cases into work and we can try and fashion something to get them out mate.
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Post by museumman on Apr 27, 2014 20:18:36 GMT 1
Make something to go in the end of a dent puller and you hammer them out in reverse
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Post by billy on May 11, 2014 13:01:45 GMT 1
If you can find an expanding bolt that fits in the bearing then they will grip the bearing enough to pull them out. I tried that once, didn't work! The expaning bolt just slipped out all the time, regardless of how hard I tensioned the bugger.  So now I'm left with a beaten up bearing that I probably have to cut out with the dremel lol. |
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robw
Thrash Merchant
Posts: 367
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Post by robw on May 11, 2014 22:14:25 GMT 1
I heated mine in the oven whilst the wife was away and they fell out
Rob
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Post by billbott on May 11, 2014 22:31:00 GMT 1
I too heated my cases in the oven while the FPO was out, then slammed it down onto a piece of board and they all fell out.
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Post by fatty on Jun 6, 2014 22:08:49 GMT 1
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Post by miniman on Jun 8, 2014 17:43:03 GMT 1
if they are at the point where the inners have fallen out - or if you can get the inner race out somehow, get someone to machine you up a piece of bar that is a snug (the snugger the better) fit into the outer race, fill the bottom of the blind hole with heavy oil, insert bar into the inner race and hit with a mallet. You have just built a hydraulic press/hammer and the outer race should pop out. Just make sure to have the back of the hole properly supported so as not to crack the casing and put a rag over the bar and bearing or you will get very oily!
Preheating the area with a hot air gun or similar will also help as the CTE for Aluminium will be higher than the bearing so it will loosen in the hole a little.
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Post by okeydokey on Jun 15, 2014 14:13:28 GMT 1
Oven method works every time with no potential damage. Makes your kitchen stink though no matter how well you clean the cases!  Although strangely i find the smell quite calming Lol |
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So now I'm left with a beaten up bearing that I probably have to cut out with the dremel lol.
Although strangely i find the smell quite calming Lol