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Thread: transfercase oil pressure and overheating

  1. 30th November 2009, 08:54 AM #1
    mills rover's Avatar
    mills rover
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    transfercase oil pressure and overheating

    Hi to you all

    well where do i start my 200 tdi defender is giving me a head ache
    Its started to blow oil out of the breather pipe
    ive changed the oil in the transfer case twice and its still blowing oil out of the breather and getting hot around 120c when im driving on the freeway
    made sure oil isnt over full and checked hand brake drum for anything binding it all ok also checked to make sure hand brake not too tight and staying on everything seems ok but oil still going out the breather pipe ive never had this problem in all the years ive worked on landys

    its got me beat im about to take gearbox and transfercase out and maybe replace all the bearings and seals
    whats strange it drive like a dream no noise or anything coming from transfercase ive even took my centre console out and drove it with a big hole in the floor and nothing not a noise of ant kind

    What could be causing it to run hot and blow oil out the breather ?


    By the way i run 80 w 90 gear oil as ive always ran in her
    with no problem before this

    Thanx guys any help would be appreciated


    Cheers and Merry Xmas

    Andrew
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  2. 30th November 2009, 09:08 AM #2
    clean32
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    my first thought is, check the rolling dia of each wheel, make sure they are the same.
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  3. 30th November 2009, 09:17 AM #3
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    transfercase

    Thanx clean 32
    Yes mate checked that and all the same . its got me beat
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  4. 30th November 2009, 11:36 AM #4
    strangy
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    Deleted cos I should have read the post when I was awake!
    Last edited by strangy; 30th November 2009 at 11:39 AM. Reason: Deleted Post
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  5. 30th November 2009, 06:53 PM #5
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    Thumbs up hi

    Hi strangy

    wasnt sure what you meant by that mate
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  6. 30th November 2009, 07:04 PM #6
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    Blknight.aus
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    1what oil are you using?
    where is the breather routed?
    whats the load on the vehicle what speeds do you do?
    wheres the breather fitted up?
    Are you certain that its the Tcase breather thats giving you hassles and not a diff or gearbox breather?
    Dave

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  7. 30th November 2009, 07:11 PM #7
    strangy
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    Quote Originally Posted by mills rover View Post
    Hi strangy

    wasnt sure what you meant by that mate
    Sorry. I didnt fully take in your post before I wrote a response. I tried to delete it. But couldnt, so had to leave something.

    Interperetation: I have no constructive info. Sorry
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  8. 30th November 2009, 09:08 PM #8
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    120deg means there is a binding or bearing problem generating excessive heat. It is way too hot for normal highway temps, even towing.

    If it were an early LT230 I'd suggest thrust washers are knackered, but more than likely the intermediate shaft bearings are the culprit, possibly spinning the inner races on the shaft

    Either way, drop the bottom plate and check the oil for contaminants and particles and spin the intermediate cluster etc to check for resistance.

    To give you a bit of perspective, I was towing a van at 100km'h in my RRC with an LT95 on a 40 degree day and the oil temps in the transfer got to 100deg. 120deg behind a Tdi means there is a problem, you just have to find it

    JC
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  9. 1st December 2009, 12:25 PM #9
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    Thumbs up transfercase

    Hi Black knight

    Oil i use is castrol 80w90 gear oil
    breather goes from transfercase to just under the bonnet
    speed i was doing around 105 k on my gps so i assume its right
    weight ... unloaded just my self and my son in vehicle
    gear box wasnt anywhere near as hot as transfercase so made me think it was just transfercase
    also when i dropped the oil in transfercase it was almost red and i only just put new oil in it a couple of months ago

    well back then it wasnt making any noises at all but today it started to get noisy
    so i think definetly bearing problem of some kind..
    Cheers mate

    Andrew
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  10. 1st December 2009, 12:27 PM #10
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    Thumbs up transfercase

    Hi Justinc

    Yes mate i think your spot on with some bearing problem mate but ill do some more investigating and see exactly where from mate

    Cheers matey

    Andrew
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