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Wheel bearings

Discussion in 'A4/S4 forum(B5 Chassis)' started by Oranoco, Jan 23, 2009.

  1. Oranoco
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    Oranoco Well-Known Member

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    [Jan 23, 2009]
    Think my n/s/f wheel bearing is starting to go home as I'm sure it's droning a little. With the track day approaching I'm thinking I should sort it first. Is it a DIY job or should I drop it at my VAG man? Any wheel bearing kits to avoid as ECP do one at £19 and one at £29
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  3. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 23, 2009]
    its a VERY tight fit in the hub...

    Usually these bearings are a tight push fit, requires a press or a vice and big hammer to get it out and some careful vicework or a press to get it back in. Unusually though, on the A4 there are no circlips holding the bearing into the tunnel on the steering knuckle and as such its an even tighter fit than normal.

    We did mine using a BIG hammer and vice to knock them out, and a vice and some suitably sized large sockets to press the bearing back in again.

    You need to be careful that the socket only pushes on the outside ring of the bearing. and that when refitting the hub, you support the centre race of the bearing with another socket or drift.
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  4. jcb
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    jcb Active Member VCDS Map User

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    [Jan 23, 2009]
    I have a couple of uprights with good bearings you could just swap over.... ;)
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  5. fatal8446
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    fatal8446 Member

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    [Jan 23, 2009]
    i needed an ovan and a hydralic press to get mine out, the joys of being an aircraft tech. we have them
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  6. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 23, 2009]
    lol, you mustn't have had a big enough hammer ;)

    My mate was fearing for his workbench when we were beating it out, but the bench is made from 8x4" timber planks, so it stayed put :D

    I've no idea why audi chose to make them such a tight fit, instead of just fitting some circlips.
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  7. Oranoco
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    Oranoco Well-Known Member

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    [Jan 24, 2009]
    As much as it pains me it sounds like a job I'll have to pay to have done then as I just don't have time to muck about with it. Any idea what I should pay to get it done supply and fit?
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  8. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Jan 24, 2009]
    The early ones are clip less and the later ones have clips, so you may need to remove the hiub to see what you have fitted. I found out recently i have one 85mm bearing and one 82mm since my 6 speed swap,lol
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  9. Adam-D
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    Adam-D Member

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    [Jan 25, 2009]
    what about the rears? i got an advisory on the bearings, and i think my rear disks are dead as theyve gone a funky color.
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  10. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 25, 2009]
    on a FWD they are old school taper bearings, like you'd find inside the drums on a ford fiesta or something. Easy enough to change, and you may as well fit new disks and pads while your there if the disks are knackered.

    Just ensure you either get disks with an ABS ring, or you aquire some new abs rings and get them pressed onto the disk before starting the job.
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  11. Siena
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    Siena Active Member

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    [Jan 25, 2009]
    Don't the rears on a front track car have discs integral with the bearings?
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  12. Adam-D
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    Adam-D Member

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    [Jan 25, 2009]
    i think they do. like my corsa track car

    ive got a horrible feeling my rear calipers have sized. goin on the color of the disks
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  13. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Jan 25, 2009]
    See you can do the brakes at the same time as the suspension lol
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  14. Adam-D
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    Adam-D Member

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    [Jan 25, 2009]
    i plan too, im ebaying almost everything to afford it, and to clear my garage so i can leave it in there if i dont finish
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  15. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Jan 25, 2009]
    i am looking at swap mine next weekend, that still cool?
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  16. Adam-D
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    Adam-D Member

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    [Jan 25, 2009]
    yes thats fine buddy
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  17. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 25, 2009]
    Siena: the hub and disk is integral, but the bearing itself is just a normal taper bearing, with the little races pressed into the hub section of the disk
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  18. Adam-D
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    Adam-D Member

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    [Jan 26, 2009]
    if it is the same as my corsa, i think it is i should be able to adjust it up a little
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  19. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 26, 2009]
    yer its exactly the same as the setup on a corsa, but i'd take it apart and inspect/clean/regrease the rollers just to be sure. Dont want it disintegrating on you...
    #18

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