Day: 5 April 2014

Exhaust Brake For Cummins ISC Since our bus fleet uses medium duty diesel engines around the 250 hp range engine exhaust brakes are not available. Exhaust brakes are the only retarder device we can use on the buses. They work more efficiently at higher rpm…..1,800 to 2,000 rpm is best. The throttle position has to… Continue reading The PacBrake Used On A School Bus