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Thread: Belt tensioner

  1. 01-06-2016 03:32 PM #1
    irishQ
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    Belt tensioner

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    Jeez two posts in one day!

    Now the serpentine belt tensioner goes bad and is making a racket.

    Very noisy

    $96 part

    NAPA wants $357 for part and labor

    Seems like a lot of $$$$

    Diagram off Audi parts site seems to show just one bolt holding part to block

    Looks like a torq bolt

    This should be a quick driveway fix / right?
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  2. 01-06-2016 05:13 PM #2
    van462
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    It is only 1 bolt holding it in place. Check to see if you can get tools into that spot without having to slide the front core back.
    VMR 710's, APR software, Eurocode HFC
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  3. 01-06-2016 05:20 PM #3
    blbroo
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    Quote Originally Posted by irishQ View Post
    Jeez two posts in one day!

    Now the serpentine belt tensioner goes bad and is making a racket.

    Very noisy

    $96 part

    NAPA wants $357 for part and labor

    Seems like a lot of $$$$

    Diagram off Audi parts site seems to show just one bolt holding part to block

    Looks like a torq bolt

    This should be a quick driveway fix / right?
    Sometimes the bolts on those pulleys are revers thread. Not sure if ours is or not, but something to check before you start wrenching.


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  4. 01-06-2016 05:33 PM #4
    van462
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    Ours is normal thread. I had mine off this past weekend when doing a timing chain.
    VMR 710's, APR software, Eurocode HFC
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  5. 01-06-2016 06:20 PM #5
    irishQ
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    Quote Originally Posted by van462 View Post
    It is only 1 bolt holding it in place. Check to see if you can get tools into that spot without having to slide the front core back.

    1 bolt : do you know the size
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  6. 01-06-2016 07:34 PM #6
    van462
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    The tensioner is a 12mm triple square. I could fit my breaker bar and bit in there but not much room left. You may try removing the 4 screws on the upper shroud and see if that gives you any angle to go under hood latch. Also be aware not only is there the tensioner but also an idler pully on bearings further down held in by I think a t25 or 27 torx that could make the same noise.
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  7. 01-06-2016 08:27 PM #7
    STA4
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    My idler pulley started squeaking and it seized a couple weeks later.
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  8. 01-06-2016 08:55 PM #8
    Smellie
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  9. 01-07-2016 06:14 AM #9
    irishQ
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    "slide the front core bacK'

    please explain, i do not understand what you mean

    thanks
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  10. 10-01-2017 11:54 PM #10
    WarmFuzzies
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    Do you know the torque values for the serp. tensioner and idler pulley?


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  12. 10-02-2017 01:56 AM #11
    audi bug
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    Quote Originally Posted by WarmFuzzies View Post
    Do you know the torque values for the serp. tensioner and idler pulley?


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    Idler pulley bolt is 20 Nm
    Tensioner bolt is 40 Nm

    per 2013 service manual.
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  13. 10-02-2017 10:08 PM #12
    WarmFuzzies
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    Quote Originally Posted by audi bug View Post
    Idler pulley bolt is 20 Nm
    Tensioner bolt is 40 Nm

    per 2013 service manual.
    Thank you!!


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