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Replacing front wheel bearings

Alex Postan

Alex Postan

New member
How do you do it?
I've just put new bearings into my 2.7 Carrera and tapping out the steel outers from the alloy hub was nightmare. How do you do it without b*ggering up the softer alloy hubs?
 
Hi I will asume you do not have a press but as you have done the 2.7 you should find it ok. use large wood blocks to suport the hub and drive out the old bearing with a sutable size drift or large socket and copper malet clean up housing and fit new bearing kit you may be able to use the old bearing with a piece of wood on top but take care! regards Berny.
 
sometimes I use a large socket that has the same diameter as the bearing race to drift it in ( on VW & 944 hubs I have done )
 
Yes, you are right, I do not have a press. Perhaps I should buy one.
The problem is not getting the bearings back in - the use of a suitably sized socket works well particularly if you grind down the outside of the old bearing out to act as a lead. (If you dont grind it down, you've caused yourself another problem!) No, the difficulty is driving out the outers to start with, particularly the first one where you cant get a socket down through the hub because the other outer shields it.. The hubs have no slot to give a better purchase for the drift. Is there a special tool for this?
 
I also use a brass solid bar so as not to damage the item in question and bash it out one side at a time .. failing all this take it to a garage with 4 cans of larger and £10 and it will get done esp on a Friday!!! [:D]
 
Heat up the hub in the oven, think 300 is good, preferably when the sunday roast is NOT cooking! Mine just fell out, be careful, they get far to hot to touch, suggest a baking tray, if you dare! Then leave to cool, clean out the gunk thats cooked on, then warm up again, not as much this time, put the new steel rings in the freezer for at least an hour, then as you hubs starts to cool, use grease and the old rings to drift back the new in gently evenly and oh so easy, the drifts may get a bit stuck but a gentle taps sees them out easily. This beats bashing the hell ot of everything and the possible resulting damage..... of course I assuming early hubs are similar to my '87 car, if not someone say before I get accused for melting priceless magnesium hubs in ovens.... [:)]
 
Thank you for your helpful suggestions. Of course the heat method is the best and, after the event, I looked it up in the Haynes book. Guess what, that is what they advise!
The trouble is that last time I tried to do it this way I ended up with terrible bruises about my head. Something to with the wrong grease in the oven and why a turkey tasted like an ironworks.......
 
Glad you got it sorted.. Nice car keep it away from me [:D][:D]

I have some cash burning a hole in my pocket and I need to buy a house not another car [&:] [:D][:D]
 
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