Northman plow wont go down

Hi yall! I picked up and old Northman Plow on a 96 Chevy 1500 last year and it worked great all season. A couple of days ago I decided I would check and make sure it was working and clean everything up and get it ready for winter. I lifted it turned it right and left then when I went to set it down it wouldn't go down. I have never really worked on a plow setup before and really don't know where to start. Could someone please point me in the right direction.

Thanks

 

146 views and no one can help me?

 

Northmen not a very popular unit and not that many members on this time of year.

 

Did a wedding band fall on it?

 

Thanks for the replies!! Yeah I know they are not very popular. I just went out and messed with it some and I tapped on the solenoids with a hammer and it went down but now it wont stay up and it sounds like the pump has tp pump really hard to lift it

 

Time for a GOOD clean and flush. I would pull all valves and clean then. Who knows how old the crap is inside. Doesn't take much to jack a valve.

 

Yea not a popular.plow at all. Not even sure there still.in business
If it won't stay up....generally cause by junk in the valve OR a leaking ram. Since you never mentioned leak, I would agree with pat and start with a fluid flush and a valve cleaning