The pcm sends a pwm signal to a solenoid valve on the fan motor giving it a variable rate.
Hydraulic radiator cooling fan motor.
Only 20 left in stock order soon.
The stock jeep 5 7l hydraulic fan is driven off of the power steering pump and requires special fluid.
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Caltric radiator cooling fan motor for polaris ranger 800 rzr s 800 efi 760cc 2009 2012 utv.
Genuine toyota 16363 31130 cooling fan motor.
The radiator fan is a key part of your cooling system.
The hydraulic cooling fan runs at 500 rpm as soon as the engine is on as soon as the engine temperature rises above a certain level the pcm will command the hydraulic fan solenoid valve more open to ramp up the fan speed.
Direct driven fan drives require large tip clearance to allow for independent movement between the engine and radiator assembly.