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fisher mc truck problem

Discussion in 'Fisher Engineering Discussion' started by pats plowing, Dec 8, 2009.

  1. pats plowing

    pats plowing Senior Member
    Messages: 286

    Hooked up the plow yesterday and plow wont lift. Plow lights come on and plow controller turns on but no functions of plow work. replaced solenoid and still nothing, tried crossing the terminals with a wrench to make the plow pump move and it didnt even spark. checked and rechecked all connections and fuses on both truck and plow wiring. Since storm is tomorrow is there anything else i can check that may be causing my problem. Plow was just serviced with new pump, motor, cartridges etc. plow works on other trucks just seems the truck has stopped working. Any suggestions well thanked
  2. MRBachand

    MRBachand Senior Member
    Messages: 198

    Try having someone operate the plow while you wiggle the connections, push hard twist hard trying to make it work for a second to isolate the problem. Clean them up if you can with wire brush small dremel file etc... open them up wtih a tiny screwdriver if males are too tight.

    Check solonoid for cleansiness, remove and clean ALL plow conenctions to battery. Wire brush everything mirror shiny. Re-attach.

    Don't cheat yourself here, remove, wire brush, re-install everything. Including grounds on your SEHP, as well as positive terminals.

    Probably a ground problem somewhere. Those connections should all be spotless.

    If still nothing perhaps the solonoid might be shot... try your spare.
  3. no lead

    no lead PlowSite.com Addict
    Messages: 1,308

    if you jumped the solenoid and nothing happened you don't have power from the battery. hook jumper cables from the battery to the motor on the plow. anything? if yes you have a bad connection.:nod: