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First make sure you have a good cable feeding the solenoid battery terminal check with a test light if ok, turn the plow switch on and test both sides of the solenoid if there's battery voltage there check at the plow lift motor is it plugged in, if so check at the plow lift motor battery terminal and if it lights your light repair the motor....these motors are know for seizing or getting stuck if you take the cap off you can probably fix it, put a punch mark on the cap, barrel and end frame to ensure alignment when reassembled. I hope this helps. Take Care.
Those flat looking bolt heads on the base of the motor/pump are filters replace them and the fluid as well then bleed the air out. I hope this helps, take care.
Oil viscosity is dropping as oil warms up. Check that plow stays in up position. If plow creeps down than a leak by the piston seal or manifold valve is likely.
Check for contamination in tank. Suspect pump has worn and is loosing pump efficiency. Metal particles in tank are an indication pump is failing.
There may be a repair kit available. Make sure that system is completely clean.
Only use pump manufactures recommended fluid.
Install a pressure gauge on pump.
There is a pressure relief valve in the system. Ck if contamination is holding it open or spring/valve seal is bad.
Not familiar with model, but valves click at the same time motor is suppose to run. Check power and ground to motor (or try running it with jumper cables, but don't be where plow can angle and squish you. If good power but won't spin, clean brushes/commutator/check bearings in motor.
if you do it do it at the dealer that you got it from so it wont void the warranty. that way you keep it in place and they can also tell you the specifications as to what you need to do ,if anything to the front of the truck
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