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4x4 diaphragm actuator problem

Discussion in 'Mitsubishi Minicab' started by Caleb Roth, Oct 5, 2013.

  1. Caleb Roth

    Caleb Roth Member

    1994 minicab 4x4 4 speed hi/lo
    Ok here is the deal I have no 4x4 dash light and the 4x4 won't engage.
    With the key on I can hear the front diaphragm click and puff a little air but no lock into 4x4 when I push button.
    If I put the truck up on jack stands with it running in gear I can use a pry bar to manually engage 4wd.
    If I turn the truck off then it automatically goes back into 2wd. Also with the engine off I cannot pry it into 4wd.

    There is vacuum going into the diaphragm & it does click when I push 4x4 button.
    I assume that the diaphragm is leaking and the 4x4 dash light must just be shot.

    Anybody have any ideas?
  2. Roger

    Roger New Member

    I have a 200 model stuck in 4WD, did you ever find a solution?
  3. Jigs-n-fixtures

    Jigs-n-fixtures Active Member

    Don’t know on the Mitsi, but on my Hijet, there are two vacuum lines, and one is sued to disengage the actuator.
  4. Roger

    Roger New Member

    Will check it out

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