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  1. M

    JLG 40HA travel speed problems

    Another thing it has been doin in the last few times i have used it is when you press the pedal, you can feel a slight thump thump thump you dont feel it when operating the machine you just here it like its associated with the hydraulics being engaged, maybe at 1 second intervals after about a...
  2. M

    JLG 40HA travel speed problems

    I got my new controller and went out to the machine and put my old one on first. When I tried to move the brakes wouldn’t disengage and the motor bogged down. I plugged my new one up and it worked perfect. I still have to do a little tweaking to get the speeds like I want but other than that I...
  3. M

    JLG 40HA travel speed problems

    Something still isn’t right..... but I ordered a new controller so at worst case i would have to send it back and be out the restocking fee.....I have my 12VDC coming out of pin 2 (which is my brake solenoid) but my brakes wouldn’t release yesterday so I wonder if my controller is opening up...
  4. M

    JLG 40HA travel speed problems

    PQ E120-813 PQ part number 7003783.... Yeah if you unplug it, it doesn’t do anything its not supposed to. I jumped out the brake circuit at the basket because my controller stopped outputting @ the 5 degree like it’s supposed to and the unit moved fine just at the wrong speed and sometimes in...
  5. M

    JLG 40HA travel speed problems

    Well I think I have identified the real problem I was having…. When it rains I think the PQ E120 was getting crazy. Just after the rain this morning my lift started acting up. I should have like 0-1.5 VDC at low and 1.5-3 at high I think but now I have 9VDC at any position and at any level of...
  6. M

    JLG 40HA travel speed problems

    i have drove it around every afternoon for the last few days for about 20mins or so and so far everything seems to be ok.......
  7. M

    JLG 40HA travel speed problems

    When I push the pedal I don’t loose any voltage at the ground controls circuit breaker or the power distribution at the term strip. One thing I did notice is the ignition solenoid would close and stick sometimes it would release like it was supposed to and others not. I changed out the ignition...
  8. M

    JLG 40HA travel speed problems

    yeah, i am going to check those things tomorrow afternoon. thanks for your help....:drinkup
  9. M

    JLG 40HA travel speed problems

    yes, i have to look and see if the dump relay is tied in with the ignition relays somehow, but yeah it just started doing that today, i know the dump relay is sticking so i have some weird troubleshooting to do, i had 5 relays laying around i think i am going just to save time start swapping...
  10. M

    JLG 40HA travel speed problems

    thanks i will give them a call.....i am going to troubleshoot the pedal cutting the machine off tommorrow afternoon
  11. M

    JLG 40HA travel speed problems

    i dont think so, its an epoxy filled board.... i have a enigine high speed and low speed toggle and a drive high and low toggle...i see what i assume to be the correct voltage when i move the joystick and when i toggle the drive high and low at the bottom control unit.... i went out there a...
  12. M

    JLG 40HA travel speed problems

    ATCO thanks so much for your help friday afternoon the manuals i printed out helped me alot......... i have the hydraulics in the basket. Do the foward and reverse wires go to some sort of hyd. fluid control valve?
  13. M

    JLG 40HA travel speed problems

    I have a 40HA and I was having problems with my brakes randomly locking up. I think I have fixed that finding a bad relay in the main control box and also maybe a bad ground at the solenoid. Now I have a problem with my ground speed. What’s happening is when you are traveling in any direction...
  14. M

    The JLG 40F Boom Lift Dilemma

    great help for me too... thanks
  15. M

    Chamber type septic system

    looks good
  16. M

    Online manuals IH / Case ?

    thanks
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