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JD 320 loader locked out?

Tenwheeler ยท 2019-03-11 20:57

It runs and drives but the loader arms and bucket will not move. Sounds like a by-pass or relief valve opens when the pedals are moved. Shows no codes on the display. Cleaned out all the trash around the control valves and inspected wiring. Checked all the fuses - OK. Any information would be appreciated.

Replies2
  1. #1mg23612019-03-12 05:42

    If you can move your controls but the hydraulics are not working and going over relief then check the port lock solenoid valve labeled Y4 in the attached location chart. It is on the same circuit as the pedal locks so if your pedals (or hand controls) work the electrical circuitry is OK.

  2. #2Tenwheeler2019-03-12 20:48

    Thank you very much. I had to thank about it a bit in order to understand. The power and ground were good. The electric solenoid is bad. JD will have a new valve assembly tomorrow. It is in a rather tough spot to get to how ever. This special wrench for the air compressor on JD engine in a three wheel Teragator was the trick. Did not have to remove much in order to get it out.