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Thread: 300tdi Serpentine belt change

  1. 6th June 2008, 02:15 PM #1
    SenatorKang
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    300tdi Serpentine belt change

    Folks,

    A very simple question. I have a new tensioner and a new belt... But last time I changed the belt, I was on the side of the road with the barest of toolboxes... I was told to just whack the socket wrench on the front and turn it and it would raise the pully wheel up and so remove the tension... So I did that, and promptly undid the nut and removed the tensioner. In the end I had to use the bottle jack and a loadbinder to jack it up - probably not good for whatever it is that I rested the jack on, and not easy considering it took all my weight against the very top of the jack to keep it from falling forwards with one hand and put the belt on with the other!

    Anyhoo, what's the correct way to take tension off the belt to remove and reinstall it? I noticed a roughly 1/2" square on the back of the tensioner, i thought maybe you stick the 1/2" drive from a socket wrench straight in there and lever it up using the other half of the tensioner as a fulcrum but the thing won't fit in behind there.

    I know it will be a dead simple thing but I have no idea.

    Kim
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  2. 6th June 2008, 02:21 PM #2
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    ladas
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    Just put a socket with a bar on the nut on the tensioner, and pull it the opposite way (release the tension)
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  3. 6th June 2008, 02:33 PM #3
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    ladas
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    As per attached
    Last edited by ladas; 22nd October 2008 at 09:48 PM.
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  4. 6th June 2008, 04:27 PM #4
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    wally
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    15mm socket on tensioner pulley. Turn anti-clockwise and the tensioner pulley will come away from the belt. You're right. Very simple.
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  5. 6th June 2008, 04:37 PM #5
    SenatorKang
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    which one?



    put the spanner on which one? circle or square... i put it on circle, turned in the direction of the arrow and it didn't release tension, all it did was remove the tensionER...
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  6. 6th June 2008, 04:56 PM #6
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    ladas
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    well try putting on the square !!!!
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  7. 6th June 2008, 05:03 PM #7
    SenatorKang
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    ok, i'll give it a go... but i'm at work right now... oh screw it i'll do it anyway. what are they gonna do, fire me? if its that simple, i'll only be out there a couple of minutes. if not, then i'll be out there for longer... hahahaha
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  8. 6th June 2008, 05:09 PM #8
    SenatorKang
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    well i'll be damned.
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  9. 6th June 2008, 05:14 PM #9
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  10. 6th June 2008, 05:25 PM #10
    Bush65
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    I only use a hex socket on the head of the bolt that retains the idler pulley to the end of the spring loaded arm.

    The tensioner with the 1/2" square is not spring loaded. It is used to tension the belt for the aircon compressor.
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