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Leak ?

Discussion in 'Early CJ5 and CJ6 Tech' started by weedy, Jul 29, 2008.

  1. Jul 29, 2008
    weedy

    weedy Member

    Conroe, Tx
    Joined:
    Apr 19, 2005
    Messages:
    156
    My jeep has always leaked from the oil pan (rear main and the tranny transfer case) BUT TODAY IT STARTED LEAKING very BADLY (TWICE AS MUCH AS THE DAY BEFORE!) I did some hill climbing the other day and wondered if the tranny leaked into the transfer case and now the tranny is low and the transfer case is over full? Anyone experienced this? Will check the level tonight.:?
     
  2. Jul 29, 2008
    Thunderpig

    Thunderpig Member

    Parachute, Colorado
    Joined:
    Mar 28, 2006
    Messages:
    259
    What transmission and t-case do you have?

    If it's a T90 with Dana 18 then they do communicate and fluid can go back and forth. But it should equal out after being on the level for a little bit. But you shouldn't leak from that I wouldn't think. Probably a rear seal in the differential.
     
  3. Jul 29, 2008
    weedy

    weedy Member

    Conroe, Tx
    Joined:
    Apr 19, 2005
    Messages:
    156
    T90 with a twin stick transfer case , 4.27 gears, 4cyl.
     
  4. Jul 29, 2008
    weedy

    weedy Member

    Conroe, Tx
    Joined:
    Apr 19, 2005
    Messages:
    156
    The leak looks to be out of the transfer case. It has always had a few drops but all of a sudden it is puddling 90 weight oil?? What are to common areas to check for the leaks? Front seal where drive shaft enters? Rear seal? I kain of looks like a leak on the front seal (drive shaft and running down and dripping from the drain plug?
    :?
     
  5. Jul 29, 2008
    weedy

    weedy Member

    Conroe, Tx
    Joined:
    Apr 19, 2005
    Messages:
    156
    It is not coming from the differentals. It drips off the lowest point from the transfer case.
     
  6. Jul 30, 2008
    weedy

    weedy Member

    Conroe, Tx
    Joined:
    Apr 19, 2005
    Messages:
    156
    I cleaned the transfer case off and found the leak to be in the front out of the driveshaft seal. Is this common?
     
  7. Jul 30, 2008
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
    Joined:
    Apr 29, 2007
    Messages:
    3,294
    my D18 has a minor leak at the front yoke seal...seems commen on the ones I've seen
    Jim S.
    ps...I'm sure someone who's more knowledgable will reply but I think you can drop the driveline, use an impact to remove the yoke, and replace the seal w/o dropping the TC
     
  8. Jul 30, 2008
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,513
    correct
    easier if you drop the skid plate to if so equipped
     
  9. Jul 31, 2008
    weedy

    weedy Member

    Conroe, Tx
    Joined:
    Apr 19, 2005
    Messages:
    156
    Yes, that is where it seams to be leaking after cleanning and looking for drops. I am sooooo glad it will not require a tranny/tranfer case removal.
     
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