Bendix brake valve question

[Mr Hagg]

(08-30-2016 )PuroCumminsPower Wrote:  

(08-29-2016 )Mr Hagg Wrote:  THE QR1 Valve is bad. It is located under fifth wheel. When you release your brakes there is a quick release valve in the rear that trips the air and not letting it come back to the front. You should have one that has 4 lines to it.

Here is valve directly under fifth wheel.

Valve under fifth wheel is a relay valve for your brakes them self. The QR valve is the first one it works your ebrakes. Get someone to release your brakes (MAKE SURE THE TRUCK IS BLOCKED UP SO IT DONT ROLL) and then pull it and see if air comes out there if not then there ya go. Replace it.. There are many diffrent ones that look just alike but the diffrence is in the piping of it the fittings on some are smaller or larger.