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Thread: Front wheel bearings

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  1. Front wheel bearings 
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    Hi, my front wheel bearing(s) have started droning, the car has done 137k and I have owned since 50k, I was just going to replace both because of the mileage and not knowing which one is humming, as the noise does not change with cornering.

    it looks like a relatively easy job, wheel and disk off, drive shaft bolt out, undo the 4 bolts holding the bearing housing in, then tap out. Press out the hub from the old bearing, press the hub into the new bearing and replace back on the car!

    This all sounds quite straight forward, are there any difficulties in my way???
     
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  2. Re: Front wheel bearings 
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    Straightforward as you describe,get a decent spline drive for the bolts,you don't want to strip out the splines,stick the hub in the freezer when you press it back to shrink a wee bit.
    A4 B6,A4B7Quattro,MK4 Golf,MK5Golf gone and well forgotten,MK6Golf.
     
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  3. Re: Front wheel bearings 
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    I did the passenger side bearing today, all went fairly well until I tried to remove the bearing assy, I put the 4 bolts back into the bearing housing and was hammering the back with a lump hammer and brass drift, after an hour or more of doing this with no sign of movement, decided to try a chisel in the area between the hub assy and bearing assy, (I hate doing this but i had no other option) had to get very brutal with it, after a long attempt I slowly got the bearing to move, then out she came. Cleaned up the face with a precision tool steel with some emery paper double-sided to it.

    I then knocked the hub out with a socket and lump hammer, took it to a place where I could use a press and pressed the old hub onto the new bearing. hopefully all back together tomorrow.

    Nice of the Audi design engineers to use a steel bearing carrier in an aluminium arm. hope I have replaced the correct side, or I will be doing a repeat next weekend..........
     
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  4. Re: Front wheel bearings 
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    Ok, just reassembled the passenger side bearing hub assembly, been out for a test drive and............silence, got rid of that WW2 bomber that's been following me around for a couple of months.

    Strangely enough from inside the car I would have sworn it was the drivers side that was bad, if you are in the same predicament, get the car off the ground and spin the wheels as quick as you can and listen vey carefully, you should be able to hear the bad bearing.

    Use a g clamp to clamp between the 12 point tool and the hub when loosening the 4 bolts holding on the bearing Assy to the hub carrier. You will need a decent 17mm Allen hex end that will fit into a breaker bar, the 16mm threaded bolt is done up to 200NM plus 180 degrees, get someone to hold the brake pedal down when doing up and undoing. If the bearing assy is tight, persevere, it will come out. Clean everything up well and use some form of grease on the ally hub before putting in new bearing assy. The hub is not too tight on the bearing, but a press makes sure it goes on nice and true, you could probably get away with a decent bench vice and some sockets, only press on the inner race. If the old inner race stays on the old hub, carefully grind 2 flats on it and it will tap off. Hope this is useful for anyone else doing this job.
     
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