How to test trailer brakes

Discussion in 'Trucks and Trailers' started by JimMac, Sep 12, 2008.

  1. JimMac

    JimMac LawnSite Member
    Posts: 52

    Anyone know of a link to properly test trailer brakes? My trailer is 7000LB dual axle with electric brakes. Thanks for any info.
     
  2. ALC-GregH

    ALC-GregH LawnSite Fanatic
    from PA
    Posts: 7,053

    The best way I've found is to use a 12v battery. Run a jumper wire for the ground from the battery to the trailer anywhere on the frame, I use vise grips. Next, use a jumper wire from the trailer plug and jump 12v to the brake wire in the trailer plug. With the trailer wheels off the ground, spin one of the wheels that has brakes on it and touch the 12v wire in the plug for the brakes, it should lock up the wheel. If it doesn't, you have a bad ground, a broken hot wire or a bad magnet on the hub.
     
  3. tilawn

    tilawn LawnSite Member
    Posts: 112

    just go slow through a parking lot or driveway and hold on your energize button from the brake box and the brakes should lock up as your hoding it
     
  4. MileHigh

    MileHigh LawnSite Silver Member
    Posts: 2,466

    drive 25mph, and press the button on your brake controller.
     
  5. Luvs2Play

    Luvs2Play LawnSite Member
    Posts: 246

    What type of test? Are you just wanting to see if they work? Testing the breakaway? just get moving, even slow and move the button on your brake controller. To test the breakaway, pull the pin out of the switch and see if you can pull the trailer.
     
  6. Kennedy Landscaping

    Kennedy Landscaping LawnSite Fanatic
    Posts: 5,599

    Yep, thats what I was going to say, just go slow and slide the energize button. Make sure no one is behind you though, lol
     
  7. Kennedy Landscaping

    Kennedy Landscaping LawnSite Fanatic
    Posts: 5,599

    Yep, thats what I was going to say, just go slow and slide the energize button. Make sure no one is behind you though, lol
     
  8. 02DURAMAX

    02DURAMAX LawnSite Gold Member
    Posts: 3,805

    Thats what I do..But when I go for my safety sticker they pull teh emergency rope to test it..also works.
     

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