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Fisher 9' wont lower

Discussion in 'Truck & Equipment Repair' started by The Beez, Oct 8, 2010.

  1. The Beez

    The Beez Junior Member
    Messages: 2

    I have a 9' Fisher Min mount with insta-act pump on a 2001 F-350. Just put it on to move it yesterday and it wont lower but left and right are fine and obviously it raised. The coil does not have magnetic pull when key on and control held in lower function position. Checked and no 12v at white/yellow wire on coil nor at harness pin 9 that controls that function. So it can only be the wire to the controller or the controller itself right? Also, can I run a jumper wire from battery with 12v to the coil to get it to lower the plow or will it damage something? I need to get it off the truck. Thanks
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    You're on the right track, visually check the white/yellow wire back tracking completely through the harness. Testing from the grill connector to the controller plug with a DVOM will narrow it down for sure if you find no visible issues first.

    You can apply 12V directly to the S1 coil on the pump to get it on the ground temporarily. Just be sure to keep your feet clear.
  3. The Beez

    The Beez Junior Member
    Messages: 2

    Ok, thanks! I just need to get it off the truck, then i have time to figure the wiring out later. oh, and i will keep my feet clear!
  4. mansf123

    mansf123 Senior Member
    from mass
    Messages: 817

    jack it up alittle then unhook the chain. try swapping out the controller.
  5. USMCMP5811

    USMCMP5811 Senior Member
    Messages: 267

    I agree with masf123, try a differant controler first if you have one available. that will help you narrow it down reel quick.....