Apr 11, 2017 · On the compression cycle, the safety valve on the compressor itself keeps purging air. The more RPM, the more frequent it is. Checked air supply hose to air dryer: no kinks or …

Nov 27, 2012 · The unloader valve can fail in the unloaded state. Usually, I pull the line off the unloader to see if the governor is sending air to it or not when it is below the kick on value.

Aug 16, 2015 · Can anybody share a pic or point out where exactly is the air compressor unloader valve located on DD15. My system is purging every 60 Seconds "meaning...

Apr 6, 2017 · Governor is working correctly and the air dryer is functioning correctly and has a new cartridge. I am assuming the problem is a sticking Unloader Valve in the compressor or …

Jan 29, 2013 · ISX air compressor service life/ unloader valve Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by SemperFiServices, Jan 22, 2020.

Jun 29, 2015 · Cummins has procedure for the air compressor valve unloader cleaning. Air pressure should be drained to ZERO. Disconnect both sides of compressor and air pressure …

Feb 3, 2019 · The leaking air from the purge valve is pretty loud, I think You might be suggesting that there is a different leak. I will check on that and try disconnecting the unloader line at the …

Jul 7, 2010 · The air in the signal line holds open the unloader valve when the pressure is high enough, about 120 -130psi. That way air is not pumped to the tanks when it is not needed. …

Jan 30, 2011 · Cat has a updated unloader valve it has the oring on the out side of the plunger instead of the inside, I have replaced the old style on a BSX and a MXS so don't when they …

Apr 18, 2013 · Trying to replace a unloader valve on my air compressor and I'm having trouble figuring out where is unloader valve actually located on this YOO SUNG 7138 compressor.