Snow Plow Build

   / Snow Plow Build #31  
Bought a pair of cylinders, swivel fittings and hoses at a local plow shop today. They do not carry cushion valves (crossover relief). Went to several places to find one but no luck. One more place to check tomorrow then I'll give up looking and order one.

A crossover relief valve & cushion valve are different I believe.

A crossover relief dumps cylinder ports together when overpressure. A cushion valve is a plunger on a spring. When overpressure the spring/plunger collapses a bit to temporarily give.
 
   / Snow Plow Build #32  
Good looking plow George! Get some action pictures when the white stuff comes.
 
   / Snow Plow Build #33  
Got the 2 cyls. swivel fittings, and 2 hoses for $90. Had I ordered them the cyls. alone plus shipping would have been that much.

Thats a pretty good price :thumbsup:

I think you will be much better off with the 2-cylinder setup
 
   / Snow Plow Build
  • Thread Starter
#34  
Mentioned in post 27, the A frame is level. Plow blade turns left and right and cutting edge remains even to floor. Plow sits on 4 adjustable height skid shoes. Trip edge is 1/2" off the ground. Dual cylinders installed. I'll probably use the DA cylinder for a top N tilt on the 3 pt.
 

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   / Snow Plow Build #35  
After the ground freezes you should be able to remove the skids and scrape right to the dirt/asphalt.
 
   / Snow Plow Build
  • Thread Starter
#36  
After the ground freezes you should be able to remove the skids and scrape right to the dirt/asphalt.

Not if it is like last year. Ground was only frozen for about a month and I plowed up a lot of stone using the bucket to plow with. Also created a lot of tire ruts in the yard in Feb. when I pushed the snow banks back across the yard which I thought was frozen. I had to re - level (rake) the driveway in the spring.
 
   / Snow Plow Build
  • Thread Starter
#37  
A crossover relief valve & cushion valve are different I believe.

A crossover relief dumps cylinder ports together when overpressure. A cushion valve is a plunger on a spring. When overpressure the spring/plunger collapses a bit to temporarily give.

The valve at Surplus Center site says it is a cushion valve. The valve is a Prince #DRV-4HH. I just bought and installed one on my plow. Bought mine from a Hyd. shop in PA for $68. plus shipping. Paperwork that came with it says it's a crossover relief valve. (differential poppet double relief)
 
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   / Snow Plow Build
  • Thread Starter
#38  
My final version was to put 2 cylinders on instead of the one DA cylinder. Either setup will work since they are plumbed to the cushion relief. One local tractor store said he uses a single DA cyl. for plows he installs on tractors and does not use a cushion relief. (Maybe he doesn't use them so he can fix them when they break) The standard plow cylinders give more angle than the DA cylinder so I went with them. I'll use the DA later for a top N tilt. I've also removed the rear set of skid shoes. It's easier to use with just the front ones. Only used it once so far a few days ago for a small 4-5" snowfall. Had to have the loader arms hold the blade up. Plow shoes left trenches in the gravel driveway since its not frozen yet but worked very well on the paved driveways I plowed.
 

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