I put my method of dealing with this problem on the Deuce thread where the OP originally posted (didn't see he duplicated the post).
I have had several trucks with the unloader stuck open, making it unable to build pressure.
Wes, remember that the unloader is pushing a plunger that keeps the intake side open. This problem is not caused by the pressure coming from the control, it's happening because the debris and water this line seems to accumulate and cause that plunger to not retract and let the valve close. Having air on that unloader really doesn't matter...it's stuck in place (open) by water and debris. All of my trucks eventually loosen up with air tool oil (Marvel Mystery Oil). Fasttruck is not wrong... but a better cleaning and some time soaking with oil is the OP best bet in my opinion.
I agree with 74M35A2....pump air into the emergency glad hand to release the brakes and tow or drive it to safety above water. One charge of air should let you move it and will give about 4-5 times having brakes function before you have low air again. Don't use brakes if you don't have to.
I have had several trucks with the unloader stuck open, making it unable to build pressure.
Wes, remember that the unloader is pushing a plunger that keeps the intake side open. This problem is not caused by the pressure coming from the control, it's happening because the debris and water this line seems to accumulate and cause that plunger to not retract and let the valve close. Having air on that unloader really doesn't matter...it's stuck in place (open) by water and debris. All of my trucks eventually loosen up with air tool oil (Marvel Mystery Oil). Fasttruck is not wrong... but a better cleaning and some time soaking with oil is the OP best bet in my opinion.
I agree with 74M35A2....pump air into the emergency glad hand to release the brakes and tow or drive it to safety above water. One charge of air should let you move it and will give about 4-5 times having brakes function before you have low air again. Don't use brakes if you don't have to.
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