10'6" XV2 lift piston problems

Discussion in 'Fisher Engineering Discussion' started by Grotonems5, Jan 5, 2020.

  1. Grotonems5

    Grotonems5 Member
    from Vermont
    Messages: 60

    Well, I haven't used this plow much as we haven't gotten much snow this year. I remedied the headlight issue on my own, now we're having mechanical problems.

    The lift piston was leaking (A LOT) and the dealer warrantied a gland nut on it. That didn't last long and it's leaking again. Fisher is sending a new piston under warranty. Let's hope that remedies the problem.

    I'm afraid the lift piston might not be rugged enough to carry the weight of this monster plow. The angle pistons are bigger than the other model XV2 plows but the lift piston is the same 1 3/4" piston as on the 7'6" up through. Maybe they spent all their time designing new LED headlights and they overlooked some engineering on the 10'6".....
     
    Mark Oomkes likes this.
  2. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 13,687

    Sorry to heard about your problems.

    My MVP3 with wings was 11"4 and never had a problem lifting, even with wet snow
     
    Mark Oomkes likes this.
  3. rizzoa13

    rizzoa13 Member
    Messages: 95

    Same as above I have an mvp-3 on one of the trucks with wings which comes out at 11’ 4”. Lift cylinder has no issues so you probably got a bad cylinder.
     
  4. Western1

    Western1 PlowSite.com Addict
    from MI.
    Messages: 1,709

    Thinking it’s a bad cylinder as well.
     
  5. OP
    OP
    Grotonems5

    Grotonems5 Member
    from Vermont
    Messages: 60

    Good point, didn't think about the guys running wide with wings. Hopefully a new piston will solve it!
     
  6. TJS

    TJS PlowSite.com Addict
    Messages: 1,816

    Was a pressure test done. Pressure = Force and Volume = Speed.
     
  7. OP
    OP
    Grotonems5

    Grotonems5 Member
    from Vermont
    Messages: 60

    Not that I know of. They did adjust the valve so that it wouldn’t drop as fast. From factory it would drop very fast and slam down. Now it lowers down just right.
     
  8. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 30,087

    Warranted a gland nut? Seriously???

    Do they bleed hydros using gravity also?
     
  9. TJS

    TJS PlowSite.com Addict
    Messages: 1,816

    Did you get this fixed. If so what was it.
     
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  10. OP
    OP
    Grotonems5

    Grotonems5 Member
    from Vermont
    Messages: 60

    They installed a new lift piston yesterday under warranty. The tech’s opinion is that the piston should be bigger on this size plow but no real diagnoses on the failure.

    Supposed to be snow coming later this week so I’ll see if it holds up and let you know.

    The tech told me Fisher had a bad batch of pistons that weren’t completely or properly cleaned and were coming through with metal filings that were going through the system clogging things and ruining pumps. Not sure the validity of that but that’s what he told me.
     
  11. Western1

    Western1 PlowSite.com Addict
    from MI.
    Messages: 1,709

    Did they clean out your whole system?
     
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  12. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 30,087

    That would give me all sorts of warm fuzzies.
     
  13. OP
    OP
    Grotonems5

    Grotonems5 Member
    from Vermont
    Messages: 60

    They did not. They put new piston in, added fluid, and cycled it to get the air out.
     
  14. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 30,087

    I'd be on their doorstep demanding a full flush
     
  15. Defcon 5

    Defcon 5 PlowSite Fanatic
    Messages: 7,797


    I have to sometimes do 3 or 4 full flushes....
     
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  16. unhcp

    unhcp PlowSite.com Addict
    Messages: 1,320

    Seen a ton of these this year
     
  17. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 30,087

    Bad cylinders or junk in the cylinders or both?
     
  18. unhcp

    unhcp PlowSite.com Addict
    Messages: 1,320

    I guess its both? there is junk in the cylinders, which leads to metal shavings in the lift valves, which then causes it to both fail. New lift pistons and new s2 valves are common on the last batch of new plows.
     
    Western1 likes this.
  19. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 30,087

    That's kind of a big oops.
     
  20. Mr.Markus

    Mr.Markus PlowSite Fanatic
    Messages: 10,383

    Wasnt it the blocks that werent cleaned properly after milling in another thread.
    Seems its the new excuse of the season.
    That, or dealers are spending to much time researching problems on PS @cwren2472 ?