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Disengaging Twin Stick Transfer Case

Discussion in 'Early CJ5 and CJ6 Tech' started by Marty O'Neil, Sep 22, 2021.

  1. Sep 22, 2021
    Marty O'Neil

    Marty O'Neil New Member

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    I recently acquired a 1961 CJ-5 w/the 134 F head engine. Is there any sequence or procedure to disengage the transfer case, eliminating power to the front axle? I find it very difficult to get the middle stick all the way forward. Thanks in advance.
     
  2. Sep 22, 2021
    Twin2

    Twin2 not him 2021 Sponsor 2020 Sponsor

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    well it doesn't move like the high/low lever
    front axle drive is in or out . try shifting it while it's still moving . clutch in
     
  3. Sep 22, 2021
    Marty O'Neil

    Marty O'Neil New Member

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    Gotcha. Does it matter what position the Hi/Low stick is in when I attempt to disengage the TC?
     
  4. Sep 22, 2021
    amboynut

    amboynut New Member

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    The "Hi/Low" stick must be in Hi in order to disengage the front axle drive (TC, as you call it). Put another way: Low range can be selected only in 4WD.
     
  5. Sep 23, 2021
    Marty O'Neil

    Marty O'Neil New Member

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    Thanks for the info regarding the Hi/Low stick position when disengaging the front drive axle. By "TC" I'm referring to the transfer case, which transfers power to the front axle from the transmission.
     
  6. Sep 23, 2021
    timgr

    timgr We stand on the shoulders of giants. 2021 Sponsor 2020 Sponsor

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    Clearly. But it's a contradiction in terms. All power, front and/or rear, high or low range, goes through the transfer case. You can't disengage the TC. You can disengage the front axle. You can switch between high or low range.

    There is an interlock in the transfer case that prevents some combinations. You are allowed 4WD (front and rear axle), high or low range. You are allowed rear wheel drive, high range. Without modifications of the TC internal interlock, all other combinations are blocked.
     
    Last edited: Sep 23, 2021
  7. Sep 23, 2021
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

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    Neutral?
     
  8. Sep 23, 2021
    timgr

    timgr We stand on the shoulders of giants. 2021 Sponsor 2020 Sponsor

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    Yes, there's that! :coffee:

    You could argue that it's still engaged, just in neutral. The intermediate gear still spins. That's semantics though. It's still different from disengaging the front axle.
     
  9. Sep 23, 2021
    Fireball

    Fireball Well-Known Member 2021 Sponsor 2020 Sponsor

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    Here's the info straight from the owner's manual:
    [​IMG]

    [​IMG]
     
  10. Sep 24, 2021
    amboynut

    amboynut New Member

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    Ummm… Just to clear up any confusion about all those levers and to get the nomenclature right: the longest lever controls the transmission, as everybody knows. Both of the other 2 levers control the transfer case (TC). The longer one selects front axle drive - In or Out. The shorter one selects the range - Hi or Low, with neutral in between. Yes, it controls gear ratios, but in the transfer case, and is not part of the transmission. As has already been pointed out, Low range cannot be selected until the front axle drive is In, and front axle drive cannot be disengaged while in Low range. So both of those extra levers are TC levers. Lastly, optional and aftermarket overdrive and power take off (PTO) units attach to the TC and add another lever (or two) to the forest.
     
  11. Sep 24, 2021
    Marty O'Neil

    Marty O'Neil New Member

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    Thank you very much Fireball. The information you provided is precisely what I'm looking for.
     
    Fireball likes this.

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