Construction Machinery: Medium-Sized Excavator Caterpillar

Model	Hydraulic system overflow valve pressure
E70B	31378 kPa - 4551 lb / sq. inch
308D CR SB	31998.5 kPa - 4641 lb / sq. inch
308D CR	31998.5 kPa - 4641 lb / sq. inch
308C CR	27460 kPa - 3980 lb / sq. inch
307D	31998.5 kPa - 4641 lb / sq. inch
307C SB	31371.1 kPa - 4550 lb / sq. inch
307C	31371.1 kPa - 4550 lb / sq. inch
307B	31371.1 kPa - 4550 lb / sq. inch
305C CR	24500 kPa - 3553 lb / sq. inch
304C CR	24500 kPa - 3553 lb / sq. inch