• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

jlg boomlift

  1. B

    1981 JLG 40g

    I am currently having a issue where when I press on the pedal in the basket the lift will raise up or go down with out touching the joystick, obviously very scary if you were to be up high. After trying a bunch of different tests I just decide to disconnect the power from that joystick for now...
  2. C

    JLG 600S Telescopic Boom Lift Telescopic Cylinder Removal

    Is the telescopic cylinder pinned at both the base of the unit and towards the front (basket) or is it just pinned at the base and the basket end just fits in a slot? I have a 2004 600s that the telescopic cylinder is leaking. I was going to put the boom horizontal and brace it on stand...
  3. B

    1981 JLG 40G

    Hello, I have a JLG 40g boomlift, I am looking for wiring diagrams or a Manuals for this model, having issues finding anything on the 40g can find manuals on 40H or 40 HA. Wondering if anyone has information, any help is much appreciated.
  4. D

    JLG 600A Break issues

    I am relatively new to working on man lifts but have a pretty good working knowledge of hydraulics/electrical. I am currently trying to diagnose and fix a 600A (SN 0300067614) JLG every thing works fine till you drive the lift a few hundred yards, the breaks seem to start locking up and the...
  5. N

    how to remove master level cyl from jlg 40h

    I'm having problems or don't know how to remove the bottom of my master level cylinder on my 2000 JLG 40H. Has anyone done this before and can give me some help. Thanks
  6. T

    jlg 40h

    Hi i have a jlg 40h that will not reverse, sometimes it will move a couple feet and other times it will not move at all. Has any body else had this issue, or know what the problem might be
Top