• 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!

Recent content by Newfiedan

  1. N

    Ford LRG 425 wiring diagram

    It sounds like you are missing power to the start relay, I would be checking the power input and output. I am familiar with them in the boom lifts however in your case I am not sure how it would interface with the computer I can email you the manual for it if you want just msg me your email...
  2. N

    600AJ ford lrg need some opinions

    this is what it should look like on the schematic, jlg omitted this from their schematic to make life hard for us lol. Anyhow here is it is, rudimentary as I am not a pro but there it is for those who need it. Note that the governor is using the signal from the grounds to tell the engine rpm and...
  3. N

    600AJ ford lrg need some opinions

    Ok so I found my own answer for what the yellow/black and brown/white wires are for it tells the ecm what type of fuel you are using and how to alter the timing, on gas the brown/white is open and the yellow/black is open. On propane the brown white is grounded and yellow black is open. Unless...
  4. N

    2005 JLG 400S with rough idle

    this may be throwing out a simple check but do you have a jlg analyzer? I have seen a boom or 2 with a surging idle and it had thrown out the engine model in the setup and still ran, I had to reset it to a deutz engine and then it worked fine.
  5. N

    JLG 40H manlift w/ Ford 423 gas engine

    If you have the distributorless system and there is no spark you need to check for power on the coil pack center terminal and then it needs to get a crank signal from the crank sensor to pulse the coil pack check it with a/c reading on a voltmeter you should see between 0.5 to 1.6 volts a/c. For...
  6. N

    Genie S40 right swing problem

    what is the serial number?
  7. N

    600AJ ford lrg need some opinions

    Ok so a customer of mine has a ford lrg with the zenith carb and a dis system. The coils are controlled by a 10 pin ignition control module (small black one) original to the machine What I need to know is what the brown/yellow and yellow/black wires are for as it shows squat on the jlg...
  8. N

    Ford LRG 425 wiring diagram

    The efi controlled units are pretty simple to diagnose, given that it shuts down after 20 seconds I would say that it is picking up a high engine temp, try unplugging both coolant temp sensors and see if it stays running, if it does then one of the 2 has failed, the smaller one usually tells the...
  9. N

    Genie s 125 boom will not extend

    If you can elevate the boom fully then it know the axles are extended, I would start by looking for errors that come up at the base when you are doing the function in question, if there is no error the pull the upper control panel and on the alc board there will be a flash code for the error if...
  10. N

    Service Manual Trading Post

    a service manual for a toyota 7fdu30 diesel forklift. If you have one email me at dlambe@hotmail.com
  11. N

    Gehl RS6-42 wont run

    check for voltage drops while cranking, also the gehl system may have an external shut down like a secondary oil pressure switch that kills off the john deere ecm. Usually external ones are going to end up being temperature and oil pressure. Also as a thought have you pulled the pump off the...
  12. N

    Skytrak 8042 wobbles vigorously when being retracted...

    when retracting there should be about 2 inches of sag from full extension, grease the booms and check all wear pads for being tight. There are several grease nipples for these units and some are hidden in the back of the boom, when they are dry or a wear pad is loose it will be noisy and hard to...
  13. N

    JLG 40 RTS lift Wont Crank

    Is it the same from the base as well as the platform? I would hazard to check the contacts on the emergency stops at the top and bottom controls first. If you are getting a clicking during crank attempts then I would check the starter itself see if your having issues there.
  14. N

    JLG 660sj year 2001

    There is a 4 wire plug at the pump that controls forward and reverse as well as a small manual lever to control drive check that plug. As for only having high speed it sounds like the limit switch at the back top area of the boom is stuck making it think the boom is stowed. High speed should...
  15. N

    Genie Z135/70

    Yeah 1.11 there are several updates for software that you can download to a laptop off of genies website but you need Web gpi and a serial cable to do so. Also be aware that you need to update both the base and platform boards to make it work. Best advice is to get a tech to do it if your not...
See more
Top