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Thread: tensioner assembly tdi 300

  1. 6th March 2008, 03:02 PM #1
    Bill Flyer
    Bill Flyer is offline Fossicker
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    tensioner assembly tdi 300

    help needed my tdi 1998 keeps chewing up main serpentine belt tried new belt but it started to roll belt off pulley cutting outside edge can anyone advise me if i should change tensioner assembly and is there any special way or tools needed to take off and put back on hoping you can help
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  2. 6th March 2008, 03:10 PM #2
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    BigJon
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    15 mm socket, from memory. When the belt is off, there isn't any tension in it so it is easy to replace.
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  3. 8th March 2008, 02:44 PM #3
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    discomuzz
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    My '98 Tdi kept doing the same thing; inside edge.

    Turned out to be the PAS pump pulley/main shaft had around 10mm end play (i.e. knackered)!

    Grab the PAS pump by the pulley and see if it moves in and out.

    If so replace immediately, I couldn't be bothered and, as a consequence, the belt went again and wrapped itself so tightly around the water pump pulley it wrecked the internal seal in the pump.

    Also, a mechanic mate of mine told me that sometimes, when the main belt goes, it can take the A/C belt with it and that when the A/C belt goes it can, sometimes, shear the control wires from the front of the A/C compressor (non-repairable)!

    So, if the problem is PAS pulley. Don't mess with it.

    Cheers
    Murray
    (P.S. PAS pump was $295.00 and took around two hours to change.)
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  4. 8th March 2008, 08:26 PM #4
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    Taz
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    It may be worth double checking that you have the correct belt. They changed them in 96 and there is only a 10mm length difference between the two. Yours sounds like it's too tight. Just a thought.
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