Snow plow hydraulic pump

[Mechanos]

A friend of mine gave me this plow pump setup several years ago and it just been sitting on the shelf gathering dust. I have an idea to finally use it and I was hoping someone here could tell me how this thing works...



Besides the main power wire to the solenoid on the motor, it has a 6 wire lead and three hoses coming out of the block on the end of the reservoir. One of the hoses is still connected to a single acting cylinder (I would assume to be the lift cylinder that stays on the truck with the plow's mounting frame) and the other hose terminate in quick couplers... one male, one female. I'm assuming that these two hose went to a pair of opposing single acting cylinders used to angle the plow.

Intuition tells me that there has to be some internal solenoid activated valves that would open/close the different ports. With a port open and the pump running, the cylinder fills. With the port open and the pump off, fluid is allow to return to the reservoir (with the a force applied to the SA cylinder).

Am I on the right track?

 

[J_J]

Here is a wiring diagram for a similar pump..

Surplus Center - 12 VDC 1.3 GPM 2500 PSI SPX DA POWER PACK

http://www.surpluscenter.com/Wire/W9-7413.jpg

 

[Mechanos]

Thanks JJ, but while that power pack you linked looks similar, it is quite a bit different from mine. However, I was able to determine that mine is an older Monarch pump through a myriad of different web searches and did finally track down the following document that does explain the wiring of my pump.

http://www.bucherhydraulics.com/bausteine.net/f/9360/500_Wiring_Guide_2.pdf?fd=3

Mine is a 4 Way/3 Way unit.