swede69
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i bought a replacement air dryer haldex p/n:n50011k and it keeps blowing off press at the press relief valve on the side. pressure the truck is at 120psi on both gauges, i adjusted the governor to 90psi then to 125psi and it still was popping off like a snare drum.i took the old one off the old air dryer it was rated at 175psi no difference the new one is rated at 150psi both are stamped on the side.this is not the purge valve on the bottom,the haldex trouble shooting guide suggest the desiccant cartridge is plugged for one of the fixes.anyone have the same problems?any ideas?? thanks jon
