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Meyer Plow sticks at full angle

Discussion in 'Truck & Equipment Repair' started by OldFordTruck, Jan 31, 2010.

  1. OldFordTruck

    OldFordTruck Junior Member
    Messages: 7

    I've followed all of the troubleshooting tips and can't figure this one out. The Meyer E-47 is a fresh rebuild and is working perfectly. The blade goes up and down reliably. The angle left and right works as long as I don't angle all the way in either direction. Then it sticks. High pressure in the right angle cylinder prevents unhooking the hose on that cylinder without unthreading the fitting. Once the pressure is relieved, the angle works again until I angle all the way. Your help is sincerely appreciated as we have over a foot of snow this morning!
  2. theplowmeister

    theplowmeister 2000 Club Member
    from MA
    Messages: 2,511

    sounds like the pressure is preventing the poppet from moving. How is the pressure relief valve, is it allowing the ram to over pressurize? also is there a crossover relief valve, is that one set correct.
  3. EJK2352

    EJK2352 Senior Member
    Messages: 192

    Check your angle cylinder quick couplers. I replaced mine last year w/ some cheap after-market ones and had this same problem. Went to my Meyer dealer and bought some OEM to replace the cheap ones and haven't had any problems since.
  4. OldFordTruck

    OldFordTruck Junior Member
    Messages: 7

    Worked for a while

    I'm not sure what I did, but I had it working great for a while, then it stuck hard over to the left. Same thing as before. There is very high pressure in the right cylinder as I can't uncouple it, but I don't know enough about it to know what's causing it.
  5. OldFordTruck

    OldFordTruck Junior Member
    Messages: 7

    I don't think it has a crossover relief valve and I don't know enough about it to check the pressure relief valve. It certainly has a lot of pressure in the right cylinder since I can't uncouple the quick connect on that side,
  6. dchr

    dchr Senior Member
    Messages: 159

    Sounds like a bad quick coupler-and yes it does have a crossover relief valve.
  7. OldFordTruck

    OldFordTruck Junior Member
    Messages: 7

    Still not working

    OK. I've replaced the quick connects and am still having the same problem. Is it possible to have air trapped in one or both of the cylinders? Would this cause the problem? The plow frame is mounted so low on the truck that when the blade is fully down the cylinders rest at a slight incline towards the blade. Im thinking that if air is in the cylinders it might be trapped in the front end of the cylinder with no way to escape. Could this be causing the angling problem? More snow coming this weekend....
  8. JMR

    JMR Senior Member
    Messages: 567

    You need to install stops to keep the blade from angling all the way. The setup up is going over center and causing the geometry of the blade to bind. We too thought it was a fluid or pressure problem, cause when the hose pressure was relieved it would start working again. We had to add the stops to one of our blades to cure this same problem. We also tried everything. I welded a LARGE nut to the A frame where the sector hits it, problem was cured.
    Last edited: Feb 3, 2010
  9. PTSolutions

    PTSolutions PlowSite.com Addict
    Messages: 1,533

    ours did the same exact thing, took it in and replaced the C valve and coil.
  10. OldFordTruck

    OldFordTruck Junior Member
    Messages: 7

    Still not working

    Sincere thanks for all the suggestions. I think the E-47 is working OK, since it was just professionally rebuilt. All the coils test good. The blade will angle back and forth all day without sticking UNTILL it goes all the way over left. Relieve the pressure in the right cylinder and it starts working, but then acts the same way all over again. I'll experiment with some temporary stops and see what happens.
  11. PTSolutions

    PTSolutions PlowSite.com Addict
    Messages: 1,533

    then its your couplers, when i took it in thats the first thing they checked, from there they check the coils. so if yours was rebuilt then i would look into the couplers and see if the pins are sticking b/c of the pressure.
  12. tsmith

    tsmith Senior Member
    Messages: 255

    I had the same problem for quite awhile, mine was an issue with the way I bolted up the a frame to the sector. On the front of the a frame is the mouth/ 2 flat tabs that go around the flat part of the sector and then the main bolt goes in (allows side to side pivot). I had the a frame on the top flat plate instead of on the bottom and it was binding at full angle, it was also picking the outer edge of the plow up then. Hope this makes sense, if not I'll try to describe it better.
  13. dchr

    dchr Senior Member
    Messages: 159

    Can you manually angle the plow from stop to stop without it binding?
  14. dbcustoms

    dbcustoms Senior Member
    Messages: 110

    mine did the same thing, i just got used to not fully angling it, now this year i forgot all about it and i havent had a problem at full angle at all? i wondered if something was sticking and just from using it it lossened up.

    i replaced my c valve and coil also but it did not fix the problem

    i am running a e-60 though but the valve body is the same, just different pump and motor.
  15. welded wrenches

    welded wrenches Senior Member
    Messages: 177

    stuck stuck angle mechanical issue...

    yepr stuck at full angle ...ok at full angle where the blade is stuck there is a factory stop that wont let the blade angle anymore..u may-or-will probal;ly see that these factory stops the SECTOR the metal at the stops has a the apperace that someone took a chisel to this are or looks very hammered on because of years of use..ya its kinda hard to explane w/out a pic to show you..but take a close look at you sector ...chewed up at the factory full angle stops...my2cents..:waving:.
  16. OldFordTruck

    OldFordTruck Junior Member
    Messages: 7

    Yes, Once I relieve the pressure in the right cylinder, I can move the blade back and forth easily. I've replaced the quick couplers and the am still having the same problem
  17. OldFordTruck

    OldFordTruck Junior Member
    Messages: 7

    The plow is probably as old as the truck:31 years. There is wear on the sector and yes, the stops are beat up. I can see that the plow probably angles more than when it was new. I'll try modifying the stops and see if it helps.
  18. maintenanceguy

    maintenanceguy Junior Member
    Messages: 5

    As a troubleshooting effort, try to angle the blade with a block of wood between the stops to prevent the plow from going quite all the way to the stops. If this stops the blade from sticking, Meyers suggested "repair" is to weld stop blocks between the stops.

    Why Meyers didn't just put the stops in the right place, I don't know.