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Deere 755c issue

Oliver182 · 2022-01-10 18:19

Had a indicator light come on in my 755c series 2 machine this afternoon. It’s the transmission oil pressure indicator light. Had been operating the machine for a half hour or so and received a phone call so went to idle. When finished with the call noticed the light on. When I would rev up the machine it would go away but return on when at idle. Parked it for the day planning on replacing filter in morning. When I looked in manual it describes it further as “transmission hydrualic replenishing oil pressure indicator” call dealer it says. Dealer says it might have been the colder temp today( 25ish) but I had been operating the machine for half hour or so. Any ideas where to start besides filter? I have had a couple hydrualic hose failures lately so have pretty much replaced the oil in the last 50 hours. I did notice right before the light came on in a hard push it kinda stuttered a bit but i assumed it was from spinning on the frozen ground but maybe it wasn’t. Thanks for any help

Replies7
  1. #1mg23612022-01-11 05:49

    Serial number? Picture of the light in question?

  2. #2Oliver1822022-01-11 07:48

    LU755CX006265 serial number Attached photo

  3. #3mg23612022-01-11 12:07

    Do you have pressure gauges? Charge pressure needs to be checked to see if there is in fact a pressure issue or a sensor issue.

  4. #4Oliver1822022-01-11 13:38

    Checked charge pressure. About 45 degrees out today let it run for 20 minutes. 245-250psi. Light stays on at idle and initially goes out when rev it up but then light comes back. It actually flashes on/off super fast. Pressure about 250 at higher rpms. Going to replace filter in morning and check again.

  5. #5mg23612022-01-12 05:11

    Minimum pressure is supposed to be 232 psi. Yes, change your filter first, if that does not resolve your light issue then it sounds like a pressure switch is going wonky.

  6. #6Oliver1822022-01-12 18:25

    Replaced filter today and started with gauge on again. Still the warning light and pressure at 245-250. Ordered pressure switch to replace and hope that does it. Thanks for help so far.

  7. #7Oliver1822022-01-13 20:14

    Replaced pressure switch and that took care of the issue. Thanks for the help mg2361