• 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!

Search results

  1. H

    2017 JCB 3cx High Fuel Temp > 60c

    Update: turned out to be a dying lift pump, it wasn't putting out enough fuel
  2. H

    2017 JCB 3cx High Fuel Temp > 60c

    Hi, I have a 2017 JCB 3CX that's getting high temperatures above 60 °C. Once it reaches>60, the machine goes into limp mode. I recently changed injectors due to heavy black smoke. ( 3 was bad; I had rust and old fuel in the lines from the machine sitting for about 2 years.). I've changed every...
  3. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    The transmission control unit. **FIXED-ish** My technician was able to bypass the TCU using relays and diodes; it has been working without any known issues for the past few weeks. Since he was able to get it working without the TCU, I think I'll get a replacement TCU to fix it properly.
  4. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    Still not fixed. My tech guy said it’s the TCU, he’s doing a TCU bypass that should be completed soon. I’ll update once I get it fixed
  5. H

    Service Manual Trading Post

    Hi, I'm looking for the jcb parts/service manual for VIN:HAR3CXTTT02615029 Publication Number 9820/0835P
  6. H

    2014 JCB 3CX Fuel Issues, not starting without starting fluid.

    purchased a new battery, still same, it got worse after changing the lift pump, so I'm leaning to a airleak, I'll search some more and see if I can find it
  7. H

    2014 JCB 3CX Fuel Issues, not starting without starting fluid.

    the return line feeds into the fuel pump and then to the tank
  8. H

    2014 JCB 3CX Fuel Issues, not starting without starting fluid.

    I have a 2014 Jcb 3cx that's starting to give some random issues. first, it was return line restrictions,( fixed by replacing the injector return lines). Next, it started having problems starting, I would prime the lift pump by turning the ignition on and off about 3 times to make it run. third...
  9. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    did you fix it?
  10. H

    644G Select button not resposive

    Has anyone had an issue with the select button on the monitor not responding? I've seen a few posts here about it, but no answer. I these monitors are not cheap even used.
  11. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    Nothing yet, mine actually got worse, now it’s going into neutral every 10-20mins. Someone send me a pdf suggesting that the brake wiring might be at fault. I attached it. If you solve your issue please share
  12. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    thanks, I test and give an update when I get a chance
  13. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    This worked for a while with the parking switch disconnected, but now I'm having an issue where the machine is not moving at all, Initially, I thought it was the FNR switch (replaced), but that didn't fix it. The next morning the machine worked perfectly for about 1hr then it stopped going into...
  14. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    no, the only thing I disconnected was the 2-wire electrical plug for the parking brake solenoid.
  15. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    Hi, I swapped the solenoids and the loader worked longer and the transmission temp went to 1/2 way, more than ever before. unfortunately, the parking brake still came on. After this, I just unplugged the parking brake solenoid and the machine worked for almost 2 hours nonstop with the temp...
  16. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    thanks, I'll try this later and give update
  17. H

    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    Hi, hopefully, someone else had a similar experience and can give me some guidance. I have a 1993 644G loader with about 9300hrs, The Unit works fine under light load for a longer period. Once the unit starts working and the transmission oil indicator gets to about 1/2 or a little above the warm...
Top