no , the quick release valve is still in the line, this was aparently some kind of a 2 way valve that somebody put there for unknown reasons, it had 2 of the 4 ports capped off and was installed in a unused port of the r 14 relay valve for the service brakes, when air pressure was applied to charge the park chambers, the air went back into the relay valve and out thru the bottom exhaust, the result was no brake realease and rapid loss of air pressure, i am guessing that this valve has failed, and at one time it was simply used to connect the 2 pieces of air line to the park brake, as the illistrated diagram of a air brake set up does not even show this valve, and according to the diagram, nowhere is the park system plumbed into the service system at the relay valve, just courious why the valve was there
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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