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JLG N35 very slow forward/reverse

Discussion in 'Tool Carriers' started by fruitportcat, Jul 20, 2017.

  1. fruitportcat

    fruitportcat New Member

    Joined:
    Jul 20, 2017
    Messages:
    2
    Location:
    michigan
    Hello, new to the forum.-----My boss recently purchase by auction a used JLG B35 lift. We did not see this unit perform b4 purchase. When it arrived batteries were dead, installed 6 new batteries and started to test. Forward and reverse or very slow-the manual says it will go 2.5 mph, probably can only get .5 if that, also is very weak, will hardly go over a bump. Do have manual but not very helpfull in trouble shooting. Checked voltage to contactors in motor area, getting 48 v to and across contactors. But motor supply voltage out of controller is only 3-4 volts at motor terminals. There is no led malfunction lights lit not is the single "ok" light lit. Sounds like a bad controller but would like some advice.--Thanks
     
  2. laycobeau

    laycobeau Well-Known Member

    Joined:
    Jul 8, 2013
    Messages:
    57
    Occupation:
    Lead electronic technician
    Location:
    Tulsa Ok. beau.bowlan@lei-corp.com
    what's feeds the controller a joy stick? brand and part # on control and maybe I can help
     
  3. fruitportcat

    fruitportcat New Member

    Joined:
    Jul 20, 2017
    Messages:
    2
    Location:
    michigan
    Yes it has a joystick-forward & reverse on joystick and a 2 way steering switch. The controller is a JLG au1830n. But in my search I just found the tilt indicator bulb burnt out-replace bulb and the indicator is on. Tried to test tilt switch-3 wire bubble level type- but is different than the ones on our Economy scissor lifts that I am used to. Any Ideas on how the tilt switch works and or can be tested. I am waiting on the actual service manual to arrive that was ordered, all I have now is just a operators/parts manual.
     
  4. laycobeau

    laycobeau Well-Known Member

    Joined:
    Jul 8, 2013
    Messages:
    57
    Occupation:
    Lead electronic technician
    Location:
    Tulsa Ok. beau.bowlan@lei-corp.com
    Not sure but most JLG wire 27 is + 24 is ground an wire 5 is voltage out 0 volts when level
    goes to tilt relay
     
  5. southernman13

    southernman13 Senior Member

    Joined:
    May 13, 2008
    Messages:
    341
    Occupation:
    Retired
    Location:
    Florida,Ga,Tn
    Sounds like it's in creep. Are the book sections out of time? Or u may have a stuck limit switch