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700r4 shift lever question - Did I break something?

Discussion in 'The Hokey Ass Message Board' started by the-rodster, Nov 7, 2013.

  1. the-rodster
    Joined: Jul 2, 2003
    Posts: 6,959

    the-rodster
    Member

    I started working on my shift linkage last night, and just to see how tight the shift lever on the tranny was, I clamped a vice grip on it and ran it through the gears. It felt fine, but when I headed back in the other direction, I didn't feel anything.

    Now, I can twist in either direction, and I can't feel any detents, it just spins.

    What happened?

    Did I break something?

    How do I get it to work again?

    Thanks,
    Rich
     
  2. F&J
    Joined: Apr 5, 2007
    Posts: 13,281

    F&J
    Member

    700 has a very strong detent, compared to 350/400. Drop the pan to see what let go
     
  3. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,401

    gimpyshotrods
    ALLIANCE MEMBER

    This is not your exact application but it shows the components involved here:
    [​IMG]

    The detents (stops) are made by a combination of the valleys in the toothed mechanism, and a spring steel lever, with a bearing at the end, as seen above.

    I have seen the spring break, the bearing come off, and the "rooster comb" (the toothed dealee) break free of the shaft. In the case of it being broken free, it was contact with an automatic car wash, and a linkage too low. In other words, it took quite some force.

    This is likely to be something simple.

    Here is an actual 700R4, with the detent mechanism at the top of the frame, by the pan rail:
    [​IMG]

    And the valve body, naked, with the dent spring/bearing on the right:
    [​IMG]

    If you have to work on the "rooster comb", be sure to observe the little linkage attached to it (small rod, about 1/8"), and make sure you know how to get it back where it goes.

    Off:
    [​IMG]
    Off, the other end:
    [​IMG]

    Make sure it is on/in, on both ends.
     
    Last edited: Nov 7, 2013
  4. the-rodster
    Joined: Jul 2, 2003
    Posts: 6,959

    the-rodster
    Member

    Thanks, I really appreciate the pics.

    So, what will happen if you keep rotating the shift lever clockwise?

    Will it stop, or keep going past the last detent?

    Thanks,
    Rich
     
  5. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,401

    gimpyshotrods
    ALLIANCE MEMBER

    If the "rooster comb" is detached from the shaft (ovaled hole, nut backed off, etc.) The shaft will just spin. If it is still attached, and nothing is causing it to pause/stop at each position, it will stop-out on the case, or bind the linkage. Unless you really force it, I don't think you could do any damage.
     
    Last edited: Nov 10, 2013
  6. the-rodster
    Joined: Jul 2, 2003
    Posts: 6,959

    the-rodster
    Member

    I pulled the pan.

    The shaft is just spinning in the rooster comb.

    I would assume that I need to replace both the detent lever and shaft?

    Got any pointers?

    Where do I get these parts"

    Thanks,
    Rich
     
    Last edited: Dec 7, 2013
  7. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,401

    gimpyshotrods
    ALLIANCE MEMBER

    Ebay, most often. I sent you some listings via a PM.

    If those can't be had, many local transmission re-builders have them, from non-serviceable units, and may sell them to you.
     
    Last edited: Dec 7, 2013

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