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Western plow fluid leak.

Discussion in 'Western Plows Discussion' started by ThatGuySnowPlow, Jan 9, 2016.

  1. ThatGuySnowPlow

    ThatGuySnowPlow Member
    Messages: 62

    I have a western plow that was bought and installed brand new a month ago. After this last snow fall and push I am seeing fluid leaking down the reservoir and onto the frame. I have looked at all the lines on the cylinders and no leaks. Since it's under warranty do I take the cover off or just go to the dealer Monday morning.
     
  2. JMHConstruction

    JMHConstruction PlowSite.com Addict
    Messages: 1,052

    I wouldn't touch it if it's under warranty and it's not something you need right this second. Sometimes if you mess with it at all it will void the warranty.
     
  3. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,946

    Dealer Monday morning
     
  4. ThatGuySnowPlow

    ThatGuySnowPlow Member
    Messages: 62

    OK thanks. Everything seems to function fine just noticed the fluid on the frame.
     
  5. mishnick

    mishnick 2000 Club Member
    Messages: 2,243

    On Wide-outs and new style MVPs (+ SS and 3) there is a pressure test port plug on the driver's side of the valve block. Pull the DS cover off the plow and have a look for a tiny ORB plug (O-ring boss). As you look in the cavity it will be to the upper right. These plugs tend to be loose from the factory. You will see that the O-ring will be pushing out and the blue fluid will leak any time the pump is running. It will not leak when the plow is suspended in the up position because there is no pump pressure, only the pressure trapped in the lift cylinder. I find that the hex hole in the factory plugs are too loose so when you tighten them the allen key socket just spins. We replace them with after-market plugs. Usually after this O-ring is pushed out they won't seal again just by tightening them so at least pull the plug and replace the O-ring before tightening.

    But of course take it back to the shop for warranty. But when they say they can't find anything leaking tell them to look for that plug. If they are worth their salt they will already no about this problem. Of course there are other possibilities but this is common. I have also found the crossover relief valve cartridge loose (bottom right side of valve body) on a few Wide-outs and occasionally leaking valves but very rarely.
     
  6. Justin NSL

    Justin NSL Junior Member
    Messages: 2

    I am having the same problem as you on one of my new pro plus plows. I took it to the shop and they couldn't find where the leak was. Did you have any luck with your plow?
     
  7. ThatGuySnowPlow

    ThatGuySnowPlow Member
    Messages: 62

    Goes in tomorrow morning 8AM!
     
  8. Randall Ave

    Randall Ave PlowSite.com Addict
    Messages: 1,945

    Where the unit bolts onto the bracket, there is a plug with a oring that may have come loose, my best guess, had one like this last year.
     
  9. ThatGuySnowPlow

    ThatGuySnowPlow Member
    Messages: 62

    Well they had the truck all day and couldn't find a leak. They said to leave the plow dirty when I see the blue spot again so it's easy to find. Well I guess I better go plow a field and check for the blue spot on the frame lol....
     
  10. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,468

    Did it come out of the vent for the resivor?
     
  11. Justin NSL

    Justin NSL Junior Member
    Messages: 2

    My dealer said the samething..
     
  12. ThatGuySnowPlow

    ThatGuySnowPlow Member
    Messages: 62

    Not sure as it was running down the reservoir and onto the frame.
     
  13. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,468

    Sounds like great customer support.......
     
  14. mishnick

    mishnick 2000 Club Member
    Messages: 2,243

    Being a brand new plow it is possible that they overfilled it. When it it topped up (being a straight blade) it can be at any angle but should be all the way down, then put in float (hold down button until green light comes on) then push the lift frame down to push all the fluid out of the lift cylinder. Then fill the reservoir until it flows out the side hole. Some people fill them from the side but I have a zig-zag adapter that allows me to put fluid in the vent plug hole. This way it is easy to see, with a flashlight, when the blue fluid is about to come out. If you overfill the unit it will certainly come out the vent plug and make a mess.

    But as I said above, there are often loose plugs right from the factory. However, it sure makes it easy to find if you look for the blue snow and point that out to your dealer. Knowing when it leaks helps too. If it leaks while parked overnight with the blade down it's not a pressure leak and is probably a reservoir o-ring. If it only leaks when the blade is elevated sitting for long periods it's something between the lift ram and the valve. If it only leaks when the motor and pump are spinning it's a valve block leak somewhere behind the valves.
     
  15. Randall Ave

    Randall Ave PlowSite.com Addict
    Messages: 1,945

    Looked up the invoice from last year. The poppet check valve plug was loose and leaking on the one I had. They were just loose enough to leak a little.