Hello, I'm operating a Hiniker 9850 V plow with S203T 5051 power unit. The power unit pump now runs continuously (never stops unless I pull 2 conductor power cable), all functions of the plow Up/down/V/Sc work as per normal however the damn pump wont shut off, causing extreme voltage drop. Does this sound like a solenoid, a relief valve, or possibly a blown O ring somewhere? The fluid is good, and a cursary check of the wires didn't reveal any loose connectors or worn/exposed wires. Any ideas, or possible starting points before I start ripping parts off? Thanks
JJ
JJ