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E-47 problem

Discussion in 'Meyer / Diamond Products Discussion' started by robandsara@wind, Feb 9, 2008.

  1. robandsara@wind

    robandsara@wind Junior Member
    Messages: 4

    I've got a Meyers E-47 electric hydraulic plow pump that I've totally disassembled, cleaned and added new fluid to.The motor is brand new and all solenoid's have magnetism.The pump works fine until I put load on it then it only lifts the plow maybe an inch off the ground. Any advise?


    Rob
     
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Once it lifts will it stay up? Need to get a pressure gage on it to see if the gear pump is making the necessary pressure. Could be the pump is worn or just needs the pressure relief valve adjusted.

    If your a newbie with these pumps it's also possible you missed an O-ring, or placed an incorrect O-ring in it somewhere causing an internal leak. Need to get a pressure gage on it to see whats up.
     
  3. robandsara@wind

    robandsara@wind Junior Member
    Messages: 4

    Yes, It stays up when lifted.How do I check pressure? Is there any rebuid to the pump or just replace?Why would the pressure valve need adjusting if it worked fine before?
     
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Well if it worked fine before you disassembled it, then it has to be something wrong with something you did or didn't do on reassembly. Did you have the pressure relief valve disassembled to replace O-rings? If you did, then it needs the pressure checked and reset at least. If you only removed it from the pump but did'nt take it apart then I'd say you missed an O-ring or assembly procedure somewhere else.


    To check the pressure you need a gage of at least 2000psi plummed in at the angle port for the right hand angle hose and run the pump. Pump should be capable of producing 1700psi. (which is the factory spec)
     
  5. robandsara@wind

    robandsara@wind Junior Member
    Messages: 4

    The pump was doing the same thing it's doing now before I disassembled it all I did was basically clean it and reassemble.Didn't touch the pressure relief valve.
     
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Then it needs the pressure checked. Sounds like a worn gear pump or defective pressure relief valve. Check the pressure. The gear pumps aren't rebuildable/repairable, so if it's worn to the point that it won't make the necessary pressure you replace them.
     
  7. robandsara@wind

    robandsara@wind Junior Member
    Messages: 4

    Ok thanks for the advise, I'll check the pressure and go from there.