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How can I test the pump motor

Discussion in 'Meyer / Diamond Products Discussion' started by gmule, Sep 18, 2012.

  1. gmule

    gmule Junior Member
    Messages: 18

    I have a st78 plow set up with the E47 pump.
    I took the plow off at the begining of summer. when I put it back on this fall nothing works. The plow will not lift or angle
    I have removed all of the large cables and cleaned the connections for the power and ground. When I push the toggle switches the solenoid under the hood clicks but the pump motor does not run. I tried connecting a direct battery lead to the motor to see if I could get the pump to run.

    Does anyone have any suggestions as to where I should go from here?
     
  2. 95HDRam

    95HDRam Senior Member
    Messages: 157

    Pull the motor off the pump base being careful not to let the cap seperate. Hold the motor upside down and try to turn the shaft by hand. If it does not tun or hard to turn the motor is froze up and needs replaced. If the motor turns freely try to turn the pump shaft on the pump base to make sure it is not locked up.

    My spare assy is an E-47 to my E-60 and I still keep a spare motor for the 47 with me cause I have gone through three of them.
     
  3. gmule

    gmule Junior Member
    Messages: 18

    Thanks for the reply. I followed your instructions and discovered that the pump turns and the motor turns. Since it was already broke I took the end cap off and the brushes are worn to the wire that the carbon is attached too. I think I'll give replacing the brushes a go and see if that fixes it. If not I'll be replacing the motor. Thanks again for your help..
     
  4. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,992

    I suggest you buy a new motor and if you rebuild the one you have keep it as a spare. lots of other parts are worn if they ran it to the bone and you don't need it failing in the middle of a storm.
     
  5. 95HDRam

    95HDRam Senior Member
    Messages: 157

    Yeah replace the motor no matter what. Since its off and needs the brushes done it could be only a matter of time till it goes out on you with good power being supplied. Glad it wasnt the pump and you figured out the problem.
     
  6. gmule

    gmule Junior Member
    Messages: 18

    Good point. Thumbs Up
     
  7. gmule

    gmule Junior Member
    Messages: 18

  8. 95HDRam

    95HDRam Senior Member
    Messages: 157

    Yeah I would. Comes with a warranty and is cheaper then what I paid for my spare. Good find.
     
  9. Stan

    Stan Senior Member
    Messages: 579

    Not a bad price
     
  10. nealybird

    nealybird Senior Member
    Messages: 713

    that's really cheap. looks good.
     
  11. gmule

    gmule Junior Member
    Messages: 18

    I found the same motor on Amazon for 59.00 and one at Grainger for 210.00 It seems the price really varies on those.