Recent content by wrench31

will do

it was fine before when I first pulled truck in. i couldn't hear any air coming out of the front glad hand, but when i removed the dummy coupling, there was a big dump of air. the valve on the dummy coupling was clogged/coupling not seated properly. i know that it not venting on the service side...

the valve behind the front bumper cause not hearing any air dumped at inversion valve?

I can step on brake pedal and stop the truck. the only place I hear any air dumping is out of the park brake air valve (yellow knob) none of the chambers are caged and brakes shoes are adjusted to engage

when the air is drained from tanks, the park brake does engage. with truck running I can release the park brake but it won't apply and it doesn't make the usual discharge sound

did that and no air was coming out

I'm troubleshooting an air park brake system on a M1083 FMTV. I have replaced the Dash park brake valve and the park control two way check valve under the dash on driver side. Still no park brake. the manual only states if releasing of air can be heard. other than this basic troubleshooting is...