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Dana 18, Direction of Speedometer Drive Gear?

Discussion in 'Early CJ5 and CJ6 Tech' started by brunester, Feb 10, 2014.

  1. brunester

    brunester Member

    Hey Guys,
    I am rebuilding my Dana 18.
    I was wondering which direction the speedometer drive gear goes?
    Does side A go towards the transfer case?

    [​IMG]

    Thanks,
    -Eric
     
  2. Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    A side in towards transfer case
     
  3. I just did mine and installed mine with side A towards transfercase. only because when I held things up and set the rear cap over it, the gears would not mesh very well like only 1 tooth with side B towards the transfer case. and when I installed A towards the transfercase it seems to mesh perfectly with about all the teeth.
     
  4. Fr8 dog

    Fr8 dog Member

    I agree, side A toward the case. Here is a photo of mine coming off during my recent rebuild. I take lots of pictures because I know my memory isn't as long as the rebuild will take.:)

    [​IMG]
     
  5. brunester

    brunester Member

    Thanks Guys!
    -Eric
     
  6. Walt Couch

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

    You guys have to be right because even the FSM sez so. ;)
     
  7. I just kinda tested mine installed both ways in my 48 cj2a since when I tore it apart to see which way "looked" right, that speedo gear was completely missing in mine. which is kinda weird because my 2a supposedly hasn't been driven in 40 years and the rear cap bolts where still wired shut with metal wire and looked original. who knows how long it had been missing or why.
     
  8. bolerpuller

    bolerpuller Member

    I just replaced the seals/bearings in my transmission (T-90A-1) and went through this. Fortunately my brother likes to lay things out in the direction they came out so it wasn't much of a problem.
    However....I was surprised that there doesn't seem to be anything holding the gear from spinning freely? We put it back the way it came out, but there's no keeper. Is it just held by friction?
     
  9. djbutler

    djbutler Sponsor

    Yes, once you get the yoke nut tightened down that worm gear is firmly trapped against the bearing inner race and the yoke.

    Don