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Thread: LT95 oil migration from TC to gearbox

  1. #1
    Join Date
    Dec 2018
    Location
    Oz
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    32

    LT95 oil migration from TC to gearbox

    Hi all,

    When oil is migrating from the TC up into the gearbox, is this the TC output shaft seal leaking?

    If not, what is the resolution (I've already read about the balance tube hack, I'm looking for a proper fix)?

    Nick.

  2. #2
    Join Date
    Feb 2014
    Location
    Sydney
    Posts
    941

    Oil migration

    Quote Originally Posted by nickj View Post
    Hi all,

    When oil is migrating from the TC up into the gearbox, is this the TC output shaft seal leaking?

    If not, what is the resolution (I've already read about the balance tube hack, I'm looking for a proper fix)?

    Nick.
    Mine was the large spacer on the gearbox output shaft inside the tc. It should be loctited onto the shaft to stop it spinning. Thanks to Bearman.
    This fix can be done without removing the gearbox.
    Phil B

    Custodian of:
    1974 S3 swb wagon (sold)
    1978 S3 swb canvas
    48 749 '88 4x4 Perentie
    1985 County with 4BD1T

  3. #3
    Join Date
    Dec 2018
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    Oz
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    Quote Originally Posted by Phil B View Post
    Mine was the large spacer on the gearbox output shaft inside the tc. It should be loctited onto the shaft to stop it spinning. Thanks to Bearman.
    This fix can be done without removing the gearbox.
    Very interesting - can the spacer be accessed by removing the large plate on the base of the TC? Was there a thread anywhere on here with Bearman about the process or did he help you privately?

  4. #4
    Join Date
    Feb 2014
    Location
    Sydney
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    941
    Yes you take the lower access plate off and take out the intermediate shaft and gear cluster to get to it.
    There are several threads on here related to this. The advise came from Brian (Bearman)
    Phil B

    Custodian of:
    1974 S3 swb wagon (sold)
    1978 S3 swb canvas
    48 749 '88 4x4 Perentie
    1985 County with 4BD1T

  5. #5
    Join Date
    Jun 2006
    Location
    Hay Point
    Posts
    3,940
    Quote Originally Posted by nickj View Post
    Hi all,

    When oil is migrating from the TC up into the gearbox, is this the TC output shaft seal leaking?

    If not, what is the resolution (I've already read about the balance tube hack, I'm looking for a proper fix)?

    Nick.
    Gday Nick, The proper fix is to loctite the spacer and transfer input gear onto the rear of the mainshaft like it is supposed to be. To do this it is important that you firstly put the gearbox into 3rd gear and leave it there until you are finished the job. If it is a 4x4 you remove the round plate at the LH side top at the rear of the transfer case and then remove the snap ring and thrust washer and then the gear and spacer. Thoroughly clean it all including the mainshaft splines and then use loctite 609 on the spacer and loctite 648 on the gear. It you have a PTO winch you will haver to remove the chain first and if it is a 6x6 you will have to remove the 3rd axle drive first.
    Last edited by Bearman; 17th September 2019 at 07:53 PM.
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)

  6. #6
    Join Date
    Dec 2018
    Location
    Oz
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    32
    Quote Originally Posted by Bearman View Post
    Gday Nick, The proper fix is to loctite the spacer and transfer input gear onto the rear of the mainshaft like it is supposed to be. To do this it is important that you firstly put the gearbox intop 3rd gear and leave it there until you are finished the job. If it is a 4x4 you remove the round plate at the LH side top at the rear of the transfer case and then remove the snap ring and thrust washer and then the gear and spacer. Thoroughly clean it all including the mainshaft splines and then use loctite 609 on the spacer and loctite 648 on the gear. It you have a PTO winch you will haver to remove the chain first and if it is a 6x6 you will have to remove the 3rd axle drive first.
    I completely missed this post, which is a shame, because I ended up getting the balancer tube hack fix done while I was on the Sunshine Coast, rather than this proper fix... Thanks so much for the reply, I will see about getting it repaired properly at some point.

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