afchap
Well-known member
I have an 02 Spartan Mountain Master chassis with a Cummins ISC engine. It has a hydraulic engine cooling fan.
It is not thermostat controlled. Does this fan turn at a specified RPM after initial startup or does it change with engine RPM? I know it spins up when I initially accelerate from a stop but at say 1500 engine RPM is the hydraulic cooling fan turning slower than it would be at 2500 engine rpm?
It is not thermostat controlled. Does this fan turn at a specified RPM after initial startup or does it change with engine RPM? I know it spins up when I initially accelerate from a stop but at say 1500 engine RPM is the hydraulic cooling fan turning slower than it would be at 2500 engine rpm?