Hi, I have a 1986, GS221 Hino, the problem I have is with the foot pedal brake valve. I replaced the original valve with a universal type valve. Now I can only get air up if I keep my foot firmly down on the brake pedal and then when I release the foot brake pedal the air dumps out of the bottom of the new valve. I replaced the pipe connections as they came off the old valve and the new valve bolted up and connected to all the pipes perfectly? What have I done wrong? Kind regards, Greg
I have replaced old valve body and can't work out which pipes are wrongly connected or is it something else?
High Greg I will help you today,It sounds like the valve is plumed backwards,the valve called the treadle valve is kinda square in shape,and should be marked in/out, it sounds like you need to change fittings1/4 turn.Most off the universal valves have inlet on one side, and the opposite side, and if you turn 1/4 turn you would have out, on both sides,so it sounds like you are 1/4 out of time with the pluming.spanky
I have 30yrs Experience in semi-trucks,Cat,Cummins,Detroit
Thanks very much spanky, I will try this and hopefully I won't need to bother you again.
Greg you are no bother come back anytime and for quicker service ask for me by name spankyAnd thanks for pos feedbackspanky41109.5886603819
Hi spanky, job fix and working like new. Thanks again, regards, Greg