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Old 05-05-2016, 09:45 AM   #1
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Trailer Brakes Grabbing on Initial departure.

The brakes on both the TT and the dump trailer are very grabby when initially heading out then back to normal after a couple stops. This is with the controller in the truck at its lowest setting.

It's not a big deal (so far) just curious what causes this. Thanks!
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Old 05-05-2016, 10:00 AM   #2
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Oxidation(rust) on the machined cast iron from humidity in the air. Changes friction between smooth machined metal and pads
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Old 05-05-2016, 10:16 AM   #3
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I always lightly apply the brakes with the manual lever going down the driveway for a little bit when I'm leaving out after it sits a while. That lets me know that the brakes are working, scrubs any rust off, and warms them up a little.
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Old 05-05-2016, 10:22 AM   #4
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Yes it tends to get a bit humid here in Oregon.
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Old 05-05-2016, 11:10 AM   #5
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It tends to get a little humid here in South Alabama also! fancy that, opposite corners have the same problems!
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Old 05-05-2016, 11:36 AM   #6
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Still Cold here in Wisconsin.. �� But I always manually hit the brakes a couple of time to knock off the oxidation and as a reminder I actually plugged in my 7pin .. Yes I forgot once.. Had to stop a mile down the road..
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Old 05-05-2016, 11:56 AM   #7
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So far I have only forgotten to put the steps up once. We get a second chance to check things out after our long gravel driveway to hookup the WD bars and pick the rocks out of the tires.
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Old 05-05-2016, 12:05 PM   #8
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TT brakes grabbing

Had similar problem last winter. Thought it was moisture at first, not. In my case it was the brake controller, after market, that went south.
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Old 05-05-2016, 12:07 PM   #9
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Yep - They do that after sitting awhile and rust forms. Once you use them a couple times, they will be back to normal.
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