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Viscus fan

Discussion in 'A6/S6/Allroad forum (C5 Chassis)' started by Iain-A6, Apr 17, 2014.

  1. Iain-A6
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    Iain-A6 Member

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    Hi,

    i mentioned before I had a funny whirring noise come from the engine, I'm pretty sure it's the viscus fan unit is stuck on or bearing is worn. The engine is a 1.9tdi, I haven't had a proper look but what size is the nut and will I need a viscus fan tool? Also are they reverse thread?


    Thanks

    iain
    #1
  2. myth
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    myth Member

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    They are not reverse thread and on my a6 it's a 32mm spanner.
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  3. Iain-A6
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    Iain-A6 Member

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    Thanks for the reply, is it just one nut? I was
    Thinking of changing the coupling to
    Stop the noise? Or can you just change the bearings?
    #3
  4. ms1083
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    ms1083 Member

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    yes 32mm. it is just 1 nut but you need 2 spanners 1 to hold it still whilst the other on the other side of the nut to loosen. There is not enough space for adjustable spanners but I got away with 1 large adjustable and 1 32mm standard spanner. Easy with the right tools
    #4

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