Opening and Closing a Spread Axle Trailer

Discussion in 'Flatbed Trucking Forum' started by Blind Driver, Jan 31, 2013.

  1. Blind Driver

    Blind Driver Road Train Member

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    I'm wondering what is the proper procedure to move the rear axle. I had assumed there would be a way to either lock the brakes on the rear axle or to dump the air from the front axle. I was told to apply the parking brake, unlock the pins, then pull on the trailer. It may not be much, but the front tires will have to slide on the road/parking surface. This seems like unnecessary wear on the tires?

    Any better ideas?
     
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  3. Rugerfan

    Rugerfan Road Train Member

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    there should be a button on the trailer to lock the back axle so you can slide it. at least there is on the trailers at my company. maybe block the back tires and see if that maybe is less wear on the tires?
     
  4. Blind Driver

    Blind Driver Road Train Member

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    I'll look again. Should be easy enough to put a valve on the airbag line to the front axle.
     
  5. Semi Crazy

    Semi Crazy Road Train Member

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    Several PITA ways to avoid dragging the tires.

    Cage the brakes on the fwd axle.

    or

    Use a ratchet binder and a chain from the axle to the bumper if you are worried about your boss's tire wear.

    Me? I'd just drag 'em.
     
  6. leftlanetruckin

    leftlanetruckin Road Train Member

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    If it's a company trailer, ask them how they want it done. If they dont care about the tire wear, then that is their call IMO.
    Easiest way though, if it has neither of the above, is to dump all the air, then pinch off the airbag lines to the front axle with small vice grips etc, then slide it. Years ago, I installed an inline fitting with a quarter turn valve built into it. This allowed me to dump the air, turn the 2 knobs a quarter of a turn, and air the other axles back up.
    Lot quicker than caging brake chambers or chaining an axle up.

    Martin
     
  7. Semi Crazy

    Semi Crazy Road Train Member

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    If you don't mind crushing your air lines...



    blind driver might be dedicated enough to spend money on valves for his boss's trailer before he even gets paycheck no. 1, ya never know.
     
  8. SHC

    SHC Spoiled Rotten Brat O/O

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    My trailer you set the tractor brakes but mot the trailer, then you just turn a valve that sets the brakes on the rear axle, and airs up the bags all the way (raises trailer) and you pull a knob that releases the pins (air pins) then u just pull forward.
     
  9. the gambler

    the gambler Medium Load Member

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    What brand trailer is it? On the older Transcrafts we have, you supply air to the trailer and there is a lever on the rear axle to lock the breaks on that rear axle. On the newer ones there is a valve on the outside frame well just behind the center pout of the trailer.
     
    SHC Thanks this.
  10. leftlanetruckin

    leftlanetruckin Road Train Member

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    Not ideal for the 1/4" airlines granted, but they will spring back as a rule, where tread on tires wont!
    As I said, it's his bosses call IMHO.

    Martin
     
  11. SHC

    SHC Spoiled Rotten Brat O/O

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    It's a 2012 Fontaine Infinity AX. I'll snap a pic of it tomorrow since I have to open it up for the 45k I'm loading.
     
    the gambler Thanks this.
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