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  1. Re: Humming noise? 
    #11
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    Quote Originally Posted by dekhelia View Post
    Had a look at the bolt...what on earth d'you use to get it off, some kind of giant Allen key?

    Quote Originally Posted by Crasher View Post
    the worst bit is the M18 XZN bolt, 180Nm+180 degrees...

    You need a strong M18 XZN 3/4" drive and a BIG power bar at least 4 feet long. Firstly I bought a cheap one with the hole in the middle and when it sheared off I ended up in a crumpled heap on the floor so I bought the correct T10162

    "I disapprove of what you say, but I will defend to the death your right to say it"

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  2. Re: Humming noise? 
    #12
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    Jesus. Thanks for the info about the tools. Although the bolt on mine - and on the new one I've just had delivered - is not a 12-point but a regular hex, hence the Allen key question. Would the 12-point undo the six-sided "hole" in the head of the bolt on mine? Why don't they just use a regular bolt with a normal head, ffs? I haven't started to hate this car yet, as it drives like a go-kart on steroids and returns high mpg - but there is time yet...MOT is up in a week, and I think the clatter I have at idle is the flywheel telling me it is poorly. Constant clack-clack, running at about 7 per second, which at the idle speed of the BKD engine would suggest something going at the speed of the crank. ie the flywheel. Bother this car!

    Thanls though, Crasher.
     
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  3. Re: Humming noise? 
    #13
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    Why did I think you had a rear wheel bearing issue? The front is a WHOLE different job.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
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  4. Re: Humming noise? 
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    Wheel off, release the centre bolt, remove (usually snap) the ball joint nuts and pull the hub away. Remove the 10mm XZN bolts and then have hell getting the bearing out of the hub as it corrodes in solid.



    fit new bearing kit

    "I disapprove of what you say, but I will defend to the death your right to say it"

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  5. Re: Humming noise? 
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    Ok that seems straightforward enough...I have a press, so maybe the bearing will be somewhat easier to deal with? I think the possibility of it being rear bearing is still live: as you say, difficult to know exactly where a noise is generated, when it covers such a broad acoustic range
     
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  6. Re: Humming noise? 
    #16
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    It is bolted into the hub as a cartridge so in THEORY you unbolt it a take it out, well that's the theory. In practice is will be rusted solid and we have a tool that bolts to the hub and you "tap" it with a 3ilb Copper hammer....
    "I disapprove of what you say, but I will defend to the death your right to say it"

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  7. Re: Humming noise? 
    #17
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    Well, took Golf for MOT and it failed on an indicator lens and split CV boot (NS outer). No mention of bearings. Could it be that the split boot has allowed enough gunk into the joint to cause the hum? I've bought an M18 thingy that you mentioned Crasher, and also a new CV joint. Thought I might as well replace this, since you have to pop the joint off to get the new boot on anyway...
     
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  8. Re: Humming noise? 
    #18
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    Right, the M18 XZN bit that came doesn't fit the socket in the head of the bolt ... too small. Damn. It seems to require a 17mm hex bit, or at least that's the only thing I can get to fit, in either the original bolt or the replacement that came with the new CV joint. VAG must have used more than one fixing for this application, I suppose.
     
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  9. Re: Humming noise? 
    #19
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    The M18 XZN is for the rear wheel bearing, the front varies and it sounds like you have the 17mm hex key version.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
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  10. Re: Humming noise? 
    #20
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    Ah, I get it now. Have ordered the 17mm hex with 1/2" drive, just hope this will be strong enough... and of course I now have the correct bit for the rear bearing if that ever needs doing
     
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