Hey guys, I am new to the forums. Great source of information. Looking forward to being a member. I recently purchased a 2010 Case 420ct series 3 with 1200 hours and have been running into issues. I will be operating the machine, turn it off and it won't start back up again. Hydrostatic and oil pressure warnings are flashing and beeping, it also flashes 11 volts on hour readout. At the start I figured it was a sensor and had to do with the angle of the machine. I would tow it level and it would start again, but I think that could have just been coincidence. I replaced the hydraulic filter and hydraulic pressure sensor to no avail. I found that the 25 amp starter fuse was blowing, so I moved on to the starter relay as it wouldn't even crank a little with the key on ignition, but found that bridging the relay while the key is on does nothing. Right now I am stuck on the possibility of starter or battery, but the two flashing hydrostatic pressure and oil lights have me stumped. Key points: Problem occurs right after shut off and intermittently corrects itself. Hydrostatic light flashing Oil Light flashing 11 Volt on readout No crank at all Replaced hydraulic oil filter (no help) New hydrostatic sensor (no help) Starter fuse blowing occasionally Bridging starter relay does nothing (no crank at all)
