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Thread: How to test the VCU?

  1. #1
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    Default How to test the VCU?

    Hi, i am new on the forum. I own a Freelander 2000 and want to test if my VCU is working correctly so i prevent my IRD fails.
    Which is the best way to know this?

    Thanks.

  2. #2
    Trainee davegibb's Avatar
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    Default Re: How to test the VCU?

    I did read somewhere about finding an empty space and driving on full lock and make sure the resistance isn't too much.
    I think it was in LRO

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    Default Re: How to test the VCU?

    Hi there. There's been lots on this subject in the past.

    Try:
    http://www.landrovernet.com/forum/sh...hlight=viscous
    for starters.

    Alternatively, from the Freelander forum, click on "Search this forum" (top right hand corner) and type in "viscous" and see what comes up!

    Cheers

    Blippie
    www horse-back co uk :: www cameltrophyvehicles com :: www unison-greatwestern co uk :: www blippie co uk



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    Default Re: How to test the VCU?

    welcome buyefi,
    I was really paranoid about my vcu when i got my freebie too, I found the driving on full lock one a bit inconclusive.
    jack up one rear wheel and see if you can turn it using your wheel brace,
    it should turn with a lot of effort but it should turn.
    or
    get onto some wet grass and make the wheels spin, have someone watch, the front should spin first before the 4wd kicks in and sends you merrily on your way.
    Good luck
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    Default Re: How to test the VCU?

    Thank you for your soon reply.

    I jack up one rear wheel and by hand it was impossible for me to move the wheel. Then with a white marker make a line across the entire shaft and VCU and drive it some blocks and the lines moved on the propshafts only.

    The thing is that above 60 km/hr, i can hear the back wheels making noise. Is practically impossible to talk inside to another person above 100 km/hr. Is this normal on other Freelander? I have the Turbo diesel engine and i dont hear it a bit, and as you know it makes more noise than gasoline engines. The tires are in very good condition and don't show any wear. Thet are GoodYear Wrangler AT 225/75/15.

    What do you think about removing the back popshaft to see if wheel noise dissapear?

    Thank you again.

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    Apprentice Cobies's Avatar
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    Default Re: How to test the VCU?

    Quote Originally Posted by buyefi

    What do you think about removing the back popshaft to see if wheel noise dissapear?

    Thank you again.
    that sounds like a good idea
    i dont think it is normal to be unable to talk in the car. Yes removing the prop sounds like a great idea, although i am told that the whole unit (both shafts and vcu) must come off together
    I fish, therefore, I am
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  7. #7
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    Default Re: How to test the VCU?

    Take it all off, it's easier than trying to take the shaft off the VC.

    Check the rubber mounted VC bearings, when they start to break up, they make a terrible noise. Check the rear diff mountings as well, the front one usually breaks up.

    Chris
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