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Grotech/Western not varying speed

Discussion in 'Truck & Equipment Repair' started by JohnnyU, Jan 10, 2006.

  1. JohnnyU

    JohnnyU 2000 Club Member
    Messages: 2,040

    I recently picked up an older Grotech swing-away spreader. Installed it tonight and when I turned it on, I started at low speed, so I could make sure the controler worked then I'd gradually roll up to full speed. Problem: as soon as you flip the switch to on, it goes right to full speed, just like a regular switch. The voltage does not change at all, at the output of the control box or at the plug for the spreader. The LED lights show the different speeds, butthe spreader doesnt go at the speed the lights show. Anyone have any suggestions??
  2. MickiRig1

    MickiRig1 PlowSite Veteran
    Messages: 3,617

    Probably needs a new rheostat if it has one. Some of the after market catalogs list them.
  3. JohnnyU

    JohnnyU 2000 Club Member
    Messages: 2,040

    Ended up I had a ground loop. Extra ground wire removed, problem solved.
  4. JohnnyU

    JohnnyU 2000 Club Member
    Messages: 2,040

    Got it fixed!!