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7-6 superduty boss wont lock

Discussion in 'Boss Plows Discussion' started by bluefishbob, Jan 5, 2010.

  1. bluefishbob

    bluefishbob Junior Member
    from erie pa
    Messages: 13

    7-6 superduty boss. new last feb. when i push snow it will sometimes angle by itself. when it happens i can get out of my truck and push my plow and make the pistons move 6 inches. i have flushed out the fluid and tried a new controller. any ideas?
     
  2. White Knight

    White Knight Member
    Messages: 49

    The straight blade has a crossover relief valve. Is it a powered angle ie motor running or is it just pushing past relief? It sounds to me like the relief valve isn’t seating properly if you can manually push it back.
     
  3. bluefishbob

    bluefishbob Junior Member
    from erie pa
    Messages: 13

    pushing past relief. No motor runnin when it happens. Have you had a pressure relef valve fail on you?
     
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Have the angle relief valve replaced under warranty as thats whats wrong with it. Its a 5 minute job to replace and you'll be up and running.
     
  5. bluefishbob

    bluefishbob Junior Member
    from erie pa
    Messages: 13

    Well, Had it to the dealer and they replaced angle valve? no change. brought back and they replaced pressure relief valve. again did not fix. last night when i triedto hook it up to my truck the assist did not work (toggle switch outside) pump runs but piston does nothing. used a jack to hook up. everything seems to work with the controller. I love my Boss but just wish i could be done with repairs.............
     
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Pressure relief valve..for the pump or for the angle relief? Have to assume for the angle relief.

    Sounds like they may have knocked a wire loose under the pump cover while they were in there addressing the other matter.