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Sgeorge's avatar
Sgeorge
Explorer
Aug 05, 2013

Equa-li-zer Severe Wear Help!!!!

I have had this hitch setup for the past eight years on a previous trailer, I now have it installed on a new trailer, we have taken six trips with the new trailer without any issues. While pulling the trailer today I experienced what I would call extreme noise coming from the hitch when I turned. The hitch has always been somewhat noisy, but this was way over normal. When I unhitched I saw that I had severe gouging on the pins for the L-Brackets and one of the bars had obvious wearing on one side. The gouging was so bad that it actually carved a grove in the pin. I have never seen any kind of wear like this before. Any ideas of what might have happened?
PS - The tongue load was the same as the previous trips.

3 Replies

  • Thought to touch on bearing surfaces for a moment before get yet again
    slammed for being out of context or not knowing what the heck... :S

    ONE of the ways they OP's hitch system manage sway is with
    'friction'. This link is from Equa-li-zer's web page


    The Engineering Behind the Idea






    Their 'friction sway control', #4 & #5 on their webpage, points to
    the trunnion bar pivot end. Where it is held onto the shank head with
    a through bolt for each trunnion...and the 'L' bracket

    What is missing and am finding out that lots of folks do not understand
    nor accept that there is another 'sway' control by the bars (either
    round or trunnion) and that is that the pivot centers between the
    ball and the two bars are offset. So the bar end attachment to the
    tongue swing in differing arcs. There is a push/pull that 'resists'
    off center alignment of the center line of the trailer and TV



    In both cases, it is metal on metal, with no sacrificial friction
    material...that I know of, nor see.


    This is where others have lam-blasted me in commenting reading that
    folks grease/oil these mating surfaces because they make noise by
    saying that is an oxymoron...designed in friction and then the user
    applies an 'anti-friction' material (grease and/or oil)




    The amount of friction would depend on the clamping force, the
    RMS of the mating surfaces



    On this thread, the OP has discovered gouging and unexpected wear
    on the mating surfaces....where those mating surfaces are designed
    in...since no sacrificial material, the base material has become the
    sacrificial material... :(

    Acceleration most likely due to some abrasive materials found it's
    way onto/into the mating surfaces
  • Pixs would help

    Can only guess at this point

    Good info that it is used successfully and assume the wear on mating surfaces
    'acceptable'...I don't like friction methodology of metal on metal. Not just
    on this brand, but any brand (CAMs)

    Of course something has changed or was that wear always there and you just
    noticed it?

    Sand/grit/etc from one trip might have deposited itself. To embed and then
    sand paper the union

    Pixs would be most helpful in the forensics of your issue
  • Maybe your L-bracket was installed too far back on the A-frame and when you turned, the bar came out farther than the pin but stayed on the L-bracket and then when you straightened out, the bar bent the pin and popped back into position - just a thought.