air dryer flutter???

sounds like the spitter valve is getting weak or the cartrage might need changed.

 

An air dryer works off the air governor, when the governor allows air into the compressor the unloaders shift holding the intake valves open, cutting off air being compressed. The dryer discharge valve shifts with spring preasure and opens the port allowing the compressed air trapped in the cartridge to expel the oil and water from it. If you get flutter when the governor shifts to pumping, it is either #1, leakage in the compressor unloaders, remove the intake of the compressor with the engine stopped and the governor loaded, any air flow is an unloader problem, install an unloader kit. #2 the dryer, with engine stopped, and governor loaded, if you get leaking air from the unloader it needs a kit. #3 the governor is dry internally caused because a vent plug was not used and it fills with crud and it shifts slowly, replace the Governor. Just a thought!

 

never had an air governor do that to the air dryer but it is a cheap easy fix to replace one. i carry a airline nipple to bypass my air dryer when it acts up untill i can get the replacement parts to fix it. i also carry a spare govenor with me also. its better than paying labor on the road to get it changed.

 

Good advice right there, superhauler. I also have one in truck. I carry to much sht with me, but as you said, it is alot cheaper than road service or a wrecker.
I dont carry extra govenor, but should...

 

You have a great Memorial Day, also David...

 

"it is alot cheaper than road service or a wrecker."

hey now, I resemble a driver of one of those...

True we charge for our services, but we do have expenses also... Nothing is free anymore.