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Cj5 Will Not Move At Rear

Discussion in 'Early CJ5 and CJ6 Tech' started by Jeremiah miller, Oct 25, 2020.

  1. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    Oct 7, 2020
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    Hey y’all, first post,

    I got a 66 cj5 with a 302 and t-90 with overdrive.
    Slowly putting it together, been made from multiple cj5’s.

    tried to move it the other day, here’s what happens, Gears feel good in tranny, clutch feels good but no movement. It will move with 4x4 engaged. Rear driveshaft rotates even in neural.

    T- case issue? Output shaft? I plan on pulling t-case for inspection, but hoping to get some insight.

    thanks
     
    Jeremiah miller, Oct 25, 2020
    #1
  2. Oct 25, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    If the driveshaft rotates then there is something wrong in the rear differential. It's common to move a little bit but not a full rotation.
     
    Glenn, Oct 25, 2020
    #2
    dozerjim and PeteL like this.
  3. Oct 25, 2020
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    :shock: That can't be unless the axle/differential is toast.
     
    PeteL, Oct 25, 2020
    #3
    Glenn and dozerjim like this.
  4. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    Ya full rotation when I push the jeep. But when the jeep is running and I put in gear, driveshaft doesn’t move.
     
    Jeremiah miller, Oct 25, 2020
    #4
  5. Oct 25, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Ok, misinterpretation of what you meant. That's normal, and expected, for it to rotate when the vehicle is moving.
     
    Glenn, Oct 25, 2020
    #5
  6. Oct 25, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Something has to be wrong in the transfer case for it to only move with the front axle driven.
     
    Glenn, Oct 25, 2020
    #6
  7. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    Even in neutral?
     
    Jeremiah miller, Oct 25, 2020
    #7
  8. Oct 25, 2020
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    Welcome from up the road in Colorado Springs!
    When you say neutral, do you mean trans in neutral or tcase?
     
    colojeepguy, Oct 25, 2020
    #8
  9. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    Trans in neutral
     
    Jeremiah miller, Oct 25, 2020
    #9
  10. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    Looks like with tranny and t-case in neutral the drive shaft still rotates when I push jeep fwd and backwards. But when motets running and transfer case engaged and I put tranny in gear it won’t drive.

    hope that makes since
     
    Jeremiah miller, Oct 25, 2020
    #10
  11. Oct 25, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    The tires/wheels turn the axle shafts which turn the differential which turns the drive shaft. That's why you see the drive shaft rotate while rolling. Does your transfer case have 2 shift levers?
     
    Glenn, Oct 25, 2020
    #11
  12. Oct 25, 2020
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Oh. Not what it sounded like at first.

    " transfer case engaged" Are you really sure??? Interference or slop not preventing full lever movement?
     
    PeteL, Oct 25, 2020
    #12
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  13. Oct 25, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

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    My thought too.
     
    Glenn, Oct 25, 2020
    #13
  14. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    I’m checking now
     
    Jeremiah miller, Oct 25, 2020
    #14
  15. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    So it appears my overdrive was mabie stuck. I pulled the cover in cab to verify t-case was fully ingaging

    started her up put in fwd and it moves, took it out of 4x4 it moves! I don’t have a lever for my overdrive just the 2 for 4x4, I did pull the overdrive shaft out prior to try to move.
     
    Jeremiah miller, Oct 25, 2020
    #15
    Glenn likes this.
  16. Oct 25, 2020
    Keys5a

    Keys5a Sponsor

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    Do you have a transfer case drive gear to replace overdrive bowl gear so you can totally remove/eliminate the O/D from the equation?
    Are you sure the clutch is adjusted/functioning properly?
    -Donny
     
    Keys5a, Oct 25, 2020
    #16
  17. Oct 25, 2020
    Jeremiah miller

    Jeremiah miller New Member

    Pueblo
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    I have a Ramsey winch I could put on, I’m gonna attach the overdrive lever. I kinda like having it, once the restore is completed I plan on driving daily.
     
    Jeremiah miller, Oct 25, 2020
    #17
    Glenn likes this.
  18. Oct 26, 2020
    garage gnome

    garage gnome ECJ5 welder

    Western MA
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    There is a "neutral" position on the overdrive. I've had mine do that before.
     
    garage gnome, Oct 26, 2020
    #18
    colojeepguy likes this.
  19. Oct 26, 2020
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    Yup - that can be the issue without the shifter to make sure its IN or OUT... that in between has bitten me while work on them too.
     
    Warloch, Oct 26, 2020
    #19
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