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D18 Transfer Case

Discussion in 'Early CJ5 and CJ6 Tech' started by alleycat3677, Jun 16, 2016.

  1. Jun 16, 2016
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    i replaced the rear main seal in my transfer case and now it leaks worse than before. Any thoughts or suggestions?
     
    alleycat3677, Jun 16, 2016
    #1
  2. Jun 16, 2016
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Nov 22, 2003
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    8,126
    Did you use any sealant around the outside of the seal?

    Is the area where the seal rides on the yoke nice & smooth & shiny or is it discoloured/pitted?

    H.
     
    Howard Eisenhauer, Jun 16, 2016
    #2
  3. Jun 16, 2016
    erhuff

    erhuff Western MA

    Western MA
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    Dec 16, 2011
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    Did you put RTV on the splines of the yoke and thread sealer on the bolts?
     
    erhuff, Jun 16, 2016
    #3
  4. Jun 16, 2016
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Oct 10, 2015
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    Guess I have to get under and look. I did not do it. Seals are cheap enough I can do it again. Give me a quick rundown of what I should do and I'll do it. Thanks
     
    alleycat3677, Jun 16, 2016
    #4
  5. Jun 16, 2016
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Oct 10, 2015
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    So I pulled the fill plug just to see if it needed a top off! Oil poured out. Guess she may have been a touch overfilled!!!!
     
    alleycat3677, Jun 16, 2016
    #5
  6. Jun 16, 2016
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
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    Aug 13, 2015
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    If it's a mystery how it got so full, check your trans level. That's where the extra oil may have came from.
     
    ITLKSEZ, Jun 16, 2016
    #6
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  7. Jun 16, 2016
    uncamonkey

    uncamonkey Member

    Greeley CO
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    Read up, all of this has been covered before about sealing up a transfer case and if you fill the tranny and transfer case, after a bit the TF case ends up being about 1/2 inch overfilled. Just how it works on these old buggers. The fill holes aren't at the same level and they share the lube.
     
    uncamonkey, Jun 16, 2016
    #7
  8. Jun 16, 2016
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
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    one other note when using RTV or gasket cement . surface must be oil free . brake clean area or parts
     
    Twin2, Jun 16, 2016
    #8
  9. Jun 18, 2016
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Oct 10, 2015
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    One stupid question.....can I replace the seal with the case still in the jeep. I am pretty sure I can just making sure. Looks like 4 bolts for the drive shaft,one nut for the drum. Then I should be able to see the seal on the output shaft!!! Thanks
     
    alleycat3677, Jun 18, 2016
    #9
  10. Jun 18, 2016
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    yes you can.
     
    oddfirejeeper, Jun 18, 2016
    #10
  11. Jun 18, 2016
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
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    yep drain oil , remove bolts and nut . a two jaw puller for drum and hub . a seal puller and driver
     
    Twin2, Jun 18, 2016
    #11
  12. Jun 18, 2016
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Thanks guys. Figured I could!
     
    alleycat3677, Jun 18, 2016
    #12
  13. Jun 18, 2016
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    Be sure the RTV you use is oil resistant (not the red RTV).
     
    Walt Couch, Jun 18, 2016
    #13
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