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Thread: vibration/transfer output flanges

  1. 2nd May 2013, 07:43 PM #1
    middy.01's Avatar
    middy.01
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    Question vibration/transfer output flanges

    hello,
    i am sure this has been covered before but i couldn't find anything about it but i'm unsure about movement in my transfer case out put flanges on my defender. i have a vibration at all sorts of speeds and the more load the more vibrations.

    i have a 2" lift and a salsbury front axle, double cardon on the front drive shaft and new rear drive shaft and both shafts have been balanced. the vibration is very anoying but my main concern is the transfer case bearings.

    my front transfer out put flange has up and down movement of about 2mm which i believe is normal but it has end float as well, so is that roller bearing buggered?

    the rear has up and down movenent of about 2mm as well and i dont think it was there before so is the rear out put bearing stuffed as well?

    i havent driven any other defenders or had a good look at any others either so i dont know what is normal and what isn't.

    i am going to the kimberlys in june so i will be doing some long drives and a vibration wouldn't be very good, also i want everything to be perfect so there is no chance of breakdowns.

    Cheers, Middy.
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  2. 2nd May 2013, 08:21 PM #2
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    goingbush
    goingbush is offline ForumSage
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    any chance you can post a pic of your Salisbury front axle.

    you do not want ANY up and down movement of your output flanges,
    I suggest you get your transfer case rebuilt and steel sleeves inserted into your intermediate shaft whilst your at it.

    no vibration at all is acceptable, not where your going.
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  3. 2nd May 2013, 09:41 PM #3
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    middy.01
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    yeah i will take some tomorrow for you.

    well this is sort of my problem as i asked a while ago if the front flange should have any movement and Ian Ashcroft replied saying that 2mm is normal and even a double roller bearing dosen't get rid of the play.

    how ever i cant remember there ever being play at the rear flange.

    maybe i will just do the 2 flange bearings and see how i go from there but i have herd double cardon joints never last on a defender so will the vibrations still be there? cheers
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  4. 2nd May 2013, 09:42 PM #4
    Ancient Mariner
    Ancient Mariner is offline Wizard
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    Loose nuts on the flanges?
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  5. 3rd May 2013, 07:27 AM #5
    Bush65
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    A number of issues can contribute to drive line vibrations. You have identified one, the play in the output bearings.

    Loose bolts connecting the drive shafts to the drive flanges is another common cause, as AM alluded to.

    Worn universal joints is a very common cause.

    You haven't said what your vehicle is. The tube diameter that Land Rover use for the rear drive shaft is a little small for the length of a 110's drive shaft and definitely too small for a 130's. So that is another.

    The operating angle of the universal joints is another.

    The phasing of the operating angles is a biggy.

    Your vibration problem is most likely a combination of any of those, and I would suggest the first and last should be high on your suspects list.

    I would be interested to hear the story behind the shaft with the double cardin joint. Many people think they overcome the issue of universal joints be out of phase, but there is much more to it that sticking in a double cardin joint.
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  6. 6th May 2013, 09:19 PM #6
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    middy.01
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    sorry guys i have been really busy. i have taken some photos of the front axle but i cant work out how to put them on here.


    the transfer flange nuts are tight as well as the drive shaft bolts, the uni's inclueding the double cardon are now more than 30 000km old. the flange angles on the front drive shaft are very different, t/case 90deg to the ground and diff flange closer to 45deg to the ground. however i thought this was the correct type of angles for a bouble cardon uni joint? but the only way i can fix this is to change the angle of the diff in the axle. because if i was to move the hole axle the steering would be effected.

    the rear tail shaft is a new brit part shaft that i had to get shortened to fit. my defender is a 1993 110 defender with a r380 gear box. i think the original gear box was the erlyer lt77 but it may have been swapped out under warrenty. apparently they changed them to the r380 but used all sorts of clutch housings etc and maybe thats why the new drive shaft didnt fit.

    the rear drive shaft flanges have 1.1 degreese difference which i believe is over spec by 0.1 degree. i have already spaced my trailing arms to get them angles to that mesurement. Bush65 what do you mean by the tube diamiter being to small? All my angles would shorly only be the same as every other defender that has a 2" lift but i dont know how they are.

    i really dont have anyother ideas apart from the rear out put bearing.

    cheers middy.
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