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  1. R

    Case 580K Won't Move Forward or Reverse

    The service manual shows a transfer gearbox with a linkage to engage two gears. It says the transmission doesn't have to be removed to work on it. A new thing to check.
  2. R

    Case 580K Won't Move Forward or Reverse

    My serial number is jjg0167591. By then, they had started replacing the F/R pressure test ports with elbows and pressure switches, one of which I removed and measured 175psi. I tried several gears, and I had previously put Traveller hydraulic/transmission fluid in where the dipstick goes when it...
  3. R

    Case 580K Won't Move Forward or Reverse

    I received the following diagnosis from the agricultural equipment dealer that looked at my backhoe. "10-31-2012 Checked relay and pressure switches, for the forward and reverse pressure. They are working properly. Drained off some of the hydraulic oil from the bottom of the transmission...
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    Case 580K Won't Move Forward or Reverse

    Reply to sheepfoot: Don't really know, but the serial number is JJG0167591 if that helps narrow it down. Response to trevor b: Thanks for those hopeful suggestions, I talked to a tech at North Central Ag in Ashland, OH, and he has seen the problem caused by a bad relay, or a stuck spool valve...
  5. R

    Case 580K Won't Move Forward or Reverse

    What is the one part in the transaxle that can break and eliminate both forward and reverse movement, but doesn't reduce the transmission fluid pressure below rated pressure, doesn't make noise when it breaks, isn't affected by the differential lock pedal, and isn't caused by the transmission...
  6. R

    Case 580K Won't Move Forward or Reverse

    Thanks, mine is a phase 3. I've reached the point at which there is little more I can check or do, so I will have to call the Case dealer this week and at least have them diagnose it onsite, get a quote.
  7. R

    Case 580K Won't Move Forward or Reverse

    Hooked up a 300psi pressure gauge in place of the front pressure switch, ended up being the reverse port. Pressure rises smoothly to 150psi, then jumps up to 175psi. Service manager said the pressure should run between 175psi and 230psi. Looks like I'll be calling the local dealer to provide...
  8. R

    Case 580K Won't Move Forward or Reverse

    No, don't I wish... Here's an update. Stopped at a Case dealer, talked to the service manager, he was very helpful. He looked in the service manual and showed me the location of two test ports to check the forward and reverse transmission fluid pressure. Checked that the linkage from the...
  9. R

    Case 580K Won't Move Forward or Reverse

    Disconnected solenoid, didn't make a difference. Checked the transmission fluid level with the transmission in neutral, engine running, it was still below the 'add' line. Filled it to within 1/4 inch of the full line with the engine running, transmission in neutral. Engine sound changed a...
  10. R

    Case 580K Won't Move Forward or Reverse

    My 580 Super K had been running great as I was trying to finish my pond before autumn rains and winter snows made it impossible. As I was approaching a pile of dirt to get a bucket load, it just stopped. No forward, no reverse. No unusual noises. Engine running fine, hydraulics working fine...
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