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Borg Warner Overdrive

Discussion in 'Early CJ5 and CJ6 Tech' started by brunester, Apr 17, 2012.

  1. brunester

    brunester Member

    Hi,
    So I bought a lil lot of jeep stuff,
    2 dana 18s, 2 t90s some springs and stuff

    One of the Dana 18s(1 1/4" shaft) has an overdrive on the back.
    Its a Borg Warner OD adapted to the D-18 by Rancho I think.
    I will attach some pictures.

    [​IMG]
    [​IMG]

    My question is..... how do I get this thing off?
    It looks to function just fine, I just cant imagine how short my driveshaft would be with the OD on it.

    I dont want to have the oopsie moment when I pull the wrong thing and a bazillion needle bearings fall from the sky.

    Thank you!
    -Eric
     
  2. Walt Couch

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

    OD or is that a 2 speed over/under?
     
  3. Corveeper

    Corveeper Member

    It’s a Borg/Warner R-10 OD. My Jeep had one just like it when I bought it.
     
  4. Corveeper

    Corveeper Member

    The entire OD assembly snap ring’s to the main shaft. You’ll have to disassemble the entire thing to remove the adaptor output shaft then replace it with a stock output shaft to use the transfer case. If you plan to do that, the OD has value, I sold mine on Ebay for around $600 several years ago.
    And you’re rear drive shaft would look a lot like this one.

    [​IMG]

    The top drive shaft is the one that replaced the one on bottom. The short one was 8” from u-joint center to u-joint center.
     
  5. Corveeper

    Corveeper Member

    Ha! I just found my copy of the manual with complete operational theory, wiring, trouble shooting, disassembly and reassembly instructions. Seems like I downloaded it from VernCo’s sight but I looked around and can’t find it any more.
    If anyone wants to see it, it’s about 20 pages long and in .jpg format so I’ll have to go through an image hosting site unless someone has a better idea.
     
  6. brunester

    brunester Member

    Thats a smaall driveshaft ahhahaha :JEEP:

    Is the output shaft in the d-18 different? I was planning on taking the OD off and then putting a parking brake thingy on it and bolting it up.


    Also, Corveeper if you are willing to zip up the images and email them to me that would be awesome!
     
  7. j_bydesign

    j_bydesign New Member

    I would definitely be interested in your OD... let me know

    James
     
  8. Corveeper

    Corveeper Member

    Yes, the Dana 18 stock rear output shaft has been replaced by the adapter shaft that the OD housing is connected too. In order to reuse this transfer case you’ll have to come up with a stock output shaft, bearing housing and yoke/companion flange.
    PM me your e-mail addy, I can either zip them or send as attachments.
     
  9. Corveeper

    Corveeper Member

    E-mail sent, let me know if it doesn’t go through and we’ll try it again.
     
  10. brunester

    brunester Member

    I got it, Thank you :)

    Do you know if an output shaft out of a 1 1/8" version will work with the 1 1/4" version?
     
  11. Corveeper

    Corveeper Member

    Yes, same output shaft.
     
  12. Corveeper

    Corveeper Member

    Just FYI but it only works in 2WD and takes up a lot of drive shaft length. If it were in something with a longer wheel base like a Comando it would be a pretty slick deal but it will just barely even fit in a CJ5.
     
  13. brunester

    brunester Member

    Hey Corveeper,
    I just got the OD off and im in the process of taking the output shaft out.
    For the life of me I cant get the output gear off (the little one next to the big one with the gear shifter on it)
    Did you have to do anything special to get it off?
    Im thinking that it might have worn a little bur on it someplace, but before i try to sand it down a little bit I wanted to make sure.

    Any Ideas?
    Im able to pound it until its right at the snap ring groove, but it wont budge beyond that.

    Thanks,
    =Eric
     
  14. duffer

    duffer Rodent Power

    This what you are having problems with?
    [​IMG]
     
  15. brunester

    brunester Member

    its the gear touching the bearing splitter tool.
    I already took the bearing/snap ring/ washer off, (made myself the hatchet version of the tool)

    so all thats on the shaft right now are the 2 gears.
    I think that the one closest to the front of the t-case/tool should just slide off?
    I tried to use a pretty good amount of force with a piece of wood and a hammer, but it only got to about the snap ring groove before the gear wouldnt budge anymore.
     
  16. 1960willyscj5

    1960willyscj5 Well-Known Member

    Might fire off a note to Herm for suggestions on removing that.
     
  17. brunester

    brunester Member

    Just incase anyone else has this issue,
    Turns out the shaft and gear were galled.
    I got the shaft pressed out of the gear and everythings good now.

    Thanks for your help guys.