I have a trailer has 3 axles with all service brake chambers ( dont have spring brakes ). the problem is that the brakes apply when i push the dash valves in. I put a new Emergency Relay Valve on trailer and no change. Could someone help me? Could it be the tractor? Could it be a bad valve?
Trouble with trailer brakes
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Freelancer001, Oct 24, 2014.
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Red and blue lines on the correct sides from the tractor?
do you get any air out the service line when the button is in? -
Traced all the lines, they are all hooked up right. did not try to see if service side had air or not
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Has this trailer sat a long time?
you could try back feeding the red line to the service line a few times. -
The trailer has been sitting for a while because of this brake problem. how do i back feed?
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Put the red line onto the blue.
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