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  1. M

    The JLG 40F Boom Lift Dilemma

    I have a new problem with my 40f. My basket level cylinder was leaking so I rebuilt it and now it will not go in and out. I am getting fluid to it but it will only go out and not back in. Is there a specific way to install it to get the air out?
  2. M

    The JLG 40F Boom Lift Dilemma

    I don’t have any pictures at the moment but the hydraulic motor that sits on top of the turn table gear is blowing fluid past the shaft seal. It is bolted to the top of the turn gear so it fills it with hydraulic fluid until it pushes the lower seal out. I replaced the shaft seal on the motor...
  3. M

    The JLG 40F Boom Lift Dilemma

    I have a new to me 1977 40f and it keeps blowing the seal on the turntable gear. I know it’s blowing fluid out of the drive motor but cannot locate the problem. There are two hoses that come from the pump, two that go to the tank, and two that go to a pipe looking thing up top. I don’t know...
  4. M

    The JLG 40F Boom Lift Dilemma

    Does anyone still have the manuals for the 40f?
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