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Belt Driven Pump Questions

Discussion in 'Truck & Equipment Repair' started by chaddy1228, Dec 30, 2008.

  1. chaddy1228

    chaddy1228 Junior Member
    Messages: 21

    I am sure everybody has Heard this over and over but, Question I have a Belt driven Fisher. It works fine when I first start the truck. After about an hour or so the plow starts to move pretty slow until I rev the motor. I replaced the pump and suction filter, I replacee/rebuilt the valve control body, my angle and lift pistons have been replaced. I am going to be reducing the size of the pulley. Does anyone know where to get one or have a part number on hand.
  2. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    You replaced the pump and this still happens? My dealer told me I need a new pump.
  3. Crash935

    Crash935 2000 Club Member
    Messages: 2,377

    What are you running for fluid in it?
  4. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    ATF for me.
  5. chaddy1228

    chaddy1228 Junior Member
    Messages: 21

    I am Running ATF. I was told that the old Fishers always ran slow when all warmed up. I found a small pulley today. Was going to change but with snow coming I will have to wait.
  6. grandview

    grandview PlowSite Fanatic
    Messages: 14,609

    Check the belt too. They all run slow unless you give it the gas.
  7. russ130

    russ130 Senior Member
    Messages: 204

    Don't know about running slower after they warm up but they do run slow. Giving it gas will help but they will always be slow compared to the newer setups out there today.