2002 fisher minute mount plow can hear plow motor running constantly and trying to lift the plow blade have to disconnect power for motor to shut off

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.

2002 Fisher Minute Mount Inst-Act Wont Angle [Archive] - PlowSite ...

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Nov 17, 2011 - 90 posts - ‎9 authors
My plow went up it was jerking and did it in steps , but , it got there . Now , it onlyjerks when i try to angle it right or left or up . I filled the fluid ... Drop it and if it doesn'traise you can just use a jack and shorten the transport chain to hold it. .... I do havecontinuity on the plow side for all 3 wires going to the plug . Hooking Up A Fisher Minute Mount 2 In Under 1 ...
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Ultramount Intermittent Angle Problem - Snow Plow Forum - L

There solinoids on pump. Check wiring and grounds. Make sure all small wires are intact and in good condition. But most likely there's a loose corroded or green wire causing issue

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

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.

does the pressure release close to raise the plow?

You may have to bleed air out of the system to get it to work properly. Hope this helps.

check your connections, especially the main power plug in, i have used a small "c" clamp over the connection to aid in the same problem

there could be a flat spot in the motor that runs the blade