Technical Gearbox gaiter - bearing installation

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Technical Gearbox gaiter - bearing installation

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Mar 24, 2013
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Hi folks,

I'm doing the left-hand gearbox gaiter on my car at the moment. Got the shaft out of the hub and it's on the bench - I got the old bearing off, but how on earth do you get the new one on?!

I found a piece of calibrated plastic tube which matches the tool shown in the HBoL, but unsurprisingly this wasn't up to the job :p

Anyway - I've found a few threads where people detail the process, most people suggest drifting the new bearing on with a piece of wood. With a piece of wood on the inner race of the bearing, I've not been able to get it to shift without splitting the wood.

It did go down a bit by walking it down, tapping it on different sides with a hammer and a bolt on the inner race - but this seems a bit savage. I don't want to damage the bearing.

Any tips? I'm wondering about getting a garage to do it because it's really annoying me...

Or am I just not hitting it hard enough? :slayer:

Thanks :devil:
 

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You are right to be cautious as it is easy to damage the bearing without the correct tool. I have found in the past my jack handle was the right sort of size and did successfully do one with that, and I did another with a piece of wood before that, but as you say the wood tends to split so it's not easy. A small amount of damage on the face of the inner race is not an issue, just as long as the bearing still turns freely then it will be fine.

I have since had a tool made by a machinist as per the Haynes drawing which makes it a doddle. If you are really struggling I could be persuaded to stick it in the post as long as costs are covered and it comes straight back to me.
 
This is a good idea kolza!

I actually pulled the bearing off the sleeve when I took the old one off, so the two are already separated...

I'll cut a slice in it and try bashing it on with that.

panda1408 - Thanks for the offer. I'll see if I can bodge it first - but I may well take you up on that if I get really stuck.
 
Success. I think a large part of the problem is that my vise is mounted onto a wooden bench - so much of the force when smacking the bearing onto the shaft was actually going into flexing the bench.

I took it to work and used a vise mounted on a metal bench. I also used the sleeve from the old bearing and a bolt to direct the abuse. This worked really well, actually - good suggestion there :D

No more gearbox oil leakage now. Hooray!
 

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