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Thread: Slight vibration after lift

  1. 21st January 2009, 12:11 PM #1
    Peppercorn
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    Slight vibration after lift

    I have just done a 2" lift on my '98 Disco and I've noticed a slight vibration that seems to be coming from one of the tail shafts.

    It isn't bad, but it is noticeable. Is this a common occurrence after lifting the suspension?? and if so, is it more likely coming from the front or back shaft and what is the fix???

    I noticed that the rear shaft doesn't have a rear uni joint but instead a rubber mount. Is this usually a problem?

    Thanks for any help in advance.

    Peppercorn.
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  2. 21st January 2009, 12:38 PM #2
    waynep
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    could be the donut ( the rubber joint you refer to ). If you look closely you might see some cracks or elongation of the bolt holes.
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  3. 21st January 2009, 02:35 PM #3
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    knotty7
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    Quote Originally Posted by waynep View Post
    could be the donut ( the rubber joint you refer to ). If you look closely you might see some cracks or elongation of the bolt holes.
    What Waynep said. Most likley the donut
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  4. 21st January 2009, 03:51 PM #4
    Peppercorn
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    thanks guys!!

    DO you just replace it or is there a conversion to Uni joints that owners choose to do???
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  5. 21st January 2009, 04:02 PM #5
    waynep
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    Replacing it is easiest ...then carry a spare with you. ( or carry the old one as a spare if it doesn't fix it )

    Some do convert to uni it but that is much more involved of course - search for more info on the site.
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  6. 21st January 2009, 04:04 PM #6
    Peppercorn
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    Thanks Wayne.
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  7. 21st January 2009, 05:53 PM #7
    Bush65
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    Suspension lift increases flexural stress in rubber coupling, so their life is generally reduced.
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  8. 21st January 2009, 06:17 PM #8
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    Blknight.aus
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    its not just limited to rubber couplings, sometimes a UJ will Settle into its natural running position and when you lift it you change that so you get the vibe.

    It may only be one on a shaft but if your UJ's are say 50K Km old it might be worth changing them if your dropping the shaft to do the donut anyway.
    Dave

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  9. 21st January 2009, 09:42 PM #9
    Peppercorn
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    Yea that makes sense. I was just trying to find out whether it was common for the front shaft or rear shaft to vibrate after a lift but it is never that simple is it?
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  10. 21st January 2009, 09:51 PM #10
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    Blknight.aus
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    the rubber donuts (and therefore the rear propshaft) are a lot more prone to it and it will repeat as the rubber is stressed more, as already covered.

    Re do the rear shaft first
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
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