vb1119
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- Brazil Indiana
My fire dept. has a m923a2 and it will not build pressure past 75 psi. both primary and secondary tanks fill evenly. if tanks are empty it takes about 5 minutes to build to that PSI at 2000 RPMs. The truck was at 140 psi and sat for 14 hours and primary tank is at 90 PSI and secondary is at 60 PSI, so no major leaks. no air is dumping into the intake u when its not supposed to. Q2 valve is working properly. I took the Governor line off the top of the compressor and there was no change. no difference if parking break is set or not. aslo just replaced the treadle valve. pressure protection valve seams to be working properly also. any Ideas?