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Discussion in 'Western Plows Discussion' started by Joel B., Dec 24, 2007.

  1. Joel B.

    Joel B. Senior Member
    from MN
    Messages: 233

    First of all, Merry Christmas to all and a safe new year.

    On to business, I have a 8' poly plow on a 2500HD. I just noticed when I lift the plow I hear/feel a nasty "clunk", the plow still lifts all the way, angles fine, and drops fine. The clunk seems to be at the beginning of the lift when the plow is still pretty low to the ground.

    I don't see any loose bolts or broken welds, but something is definitely not right.

    Appreciate any ideas...


    Joel B.
  2. William B.

    William B. Senior Member
    from S.E. IA
    Messages: 979

    Is this an Ultramount or Unimount?
  3. Joel B.

    Joel B. Senior Member
    from MN
    Messages: 233

    Oops, sorry, Unimount
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    I'm sure your aware that it could be caused by many things...First thing I'd do is get a helper to stand by the front of the truck to see if you can pinpoint where the noise is generally coming from, as it could be from the plow or the truck so you'll want to do a through diagnosis first to help narrow it down.
  5. Joel B.

    Joel B. Senior Member
    from MN
    Messages: 233

    I've tried that but the noise doesn't happen every time and I haven't been able to get it to act up when someone is watching.
  6. doh

    doh Senior Member
    Messages: 253

    I have had the chain bind on lifting, as more weight is placed on the lift arm, the chain will suddenly snap loose, and the plow will drop 1/2"
  7. Joel B.

    Joel B. Senior Member
    from MN
    Messages: 233

    You were right on the money, the chain was twisted and as the plow went down the chain would twist itself up. When the plow was raised, the chain would untwist with a "clunk".

    Thank you, thank you, thank you.

    Joel B.
  8. 1sthippy

    1sthippy Member
    Messages: 85

    Chain Snap

    Merry Xmas Everyone! Had the same thing with my Fisher LD lift chain. Took awhile to find it also.