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smart lock

Discussion in 'Boss Plows Discussion' started by CityGuy, Jan 6, 2009.

  1. CityGuy

    CityGuy PlowSite Fanatic
    Messages: 16,992

    Ok dumb question but I'm not a boss man. What are smart locks and why and where do you use them?
     
  2. aeronutt

    aeronutt Senior Member
    Messages: 262

    Click the "search" button.

    It's a single acting hydraulic ram that can't be pulled out unless there is hydraulic pressure applied. It's used on v-blades so the wings stay put when backdragging rather than folding forward. It does this through a little pressure-sensitive gizmo at the fluid port that unlocks when pressure is applied which saves the engineers from having to use double-acting cylinders on the wings. An external spring provides the required retraction force.
     
  3. JDiepstra

    JDiepstra PlowSite.com Addict
    Messages: 1,780

    Right. They are cylinders that lock in place so you can back-drag without the wings folding forward. In case this isn't obvious, they go on the V-plow and are not needed on straight blades.
     
  4. Ford445

    Ford445 Senior Member
    from Vermont
    Messages: 243

    Does anyone use them on straight blades?
     
  5. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    What use would they serve on a straight? :confused:
     
  6. JDiepstra

    JDiepstra PlowSite.com Addict
    Messages: 1,780

    No such thing.

    Don't smartlocks make the plow "more smarter"??
     
  7. snow tender

    snow tender Senior Member
    Messages: 134

    only when your in reverse
     
  8. Ford445

    Ford445 Senior Member
    from Vermont
    Messages: 243

    Sometimes my plow doesnt hold its position, just under the weight of the snow Im pushing. I never have that problem with a fisher V or Fisher straight blade. I was wondering if the smartlocks were a solution to that problem, or if there is some sort of adjustment I can make.
     
  9. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    I understand your thinking on using the SL's to help that issue Ford ...but it should hold on its own under most condtions..of course it will depend on how much load your actually pushing.

    Might want to stop by the dealer and get a pressure gage on it in order to see where the relief setting is...could simply be set too low. :waving:
     
  10. Ford445

    Ford445 Senior Member
    from Vermont
    Messages: 243

    Is that something that I can change? What pressure is it supposed to be set at?
     
  11. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Yes it can be changed/adjusted but unless you have the pressure gage to tee into an angle hose it's something thats best left for either a plow dealer or hydraulic shop to handle. If you simply go in there and begin turning on the relief setting with no ability to actually check the final pressure you can create you own problems later.