Hey all!
Just replaced the brake air dryer the other day and checked for leaks, and all is good... except...
Now I have an air leak at the brake pedal. I wound myself up in there, and it is coming from a cylindrical device that screws into the valve body, with a three-lobed plastic cap and a soft rubber split diaphragm in the center. The air escapes through this diaphragm. It is maybe a couple inches long, and smaller around than a quarter dollar. I apologize for not providing a photo, but it is pretty tight in there.
I am guessing that this is a safety release valve, and that it should not be releasing when the pressure is 120 or below. Could someone tell me if I am correct, what it is called, and where do I get one?
Matt B
1994 U-240
Matt
www.brakesystemsinc.com (http://www.brakesystemsinc.com)
1-503-236-2116
2221 N E Hoyt Portland Oregon
I replaced my base valve last year. part #wm90dx $118.11
Source noted. I am hoping the little piece can be replaced. It looks like replacing the entire valve assembly would be a bit tough - lots of lines and not much room.
Matt B
Went back underneath with better light and pliers. It is the accelerator pedal. (repeat to self - this is not a car, this is not a car) It apparently unloads through a vent, and the item I described is a dust cover - a diaphragm and nothing else, mechanically.
I moved the pedal a few times and the leak stopped - a piece of crud in the valve?
Matt B
haunted Grand-Zilla
Isn't spontaneous self repair great! We had a sticky brake light switch that was interfering with the cruise control and sometimes keeping the brake lights on after we parked. After I posted the problem on the forum, the brake light switches have performed flawlessly.
Yes and no. No repair needed, but I will be ducking and listening at the front of the coach for the next twenty times I drive it, fearing to hear the hissssssss.
Matt B
1994 U240, currently hissless