Posted 5/15/2022 08:46 (#9661127 - in reply to #9660801) Subject: RE: $100 to first right answer/ Case 1200pt fertilizer pump issue
Yes, I don't understand the connection of the vac fan on and off would cause that overspeed. Sounds like as others said, a backflow on the hydraulics. I've have had the case return hose pop out of the tractor outlet valve, it's the small flatface coupler. poor design of a flatface connector. BUT, that didn't cause an issue like yours. Sorry, not much help.
The flow meter should show Gallons per acre on your Pro 700 monitor if it's working, even with high Hydraulic pressure?