Alright. I am a pro at the Polaris AWD system. I have fixed them many times. I dont understand how exactly they "sense" when you need AWD? I know the armature hold the cage and the cam pushes the rollers up....

Thanks again guys.. i got much help from you guys in the last few years!

Josh

 

They must "SENSE" it through the electronic system.,do to the fact the engine must be below 3100 RPM to engage. also it automatically engages at ANY time the rear wheels lose traction. Hope this helps you out ..........or this might be info you all ready know and I wasting your time.......caper.....

 

The actual awd actuation is not done electronically. The 3100 rpm is a lockout by the computer that prevents voltage from energizing the hilliard until the rpm drops below that rpm but once it does the voltage remains until the switch is put back to the 2x4 position. The voltage goes to a coil that pulls a circular armature keyed to the roller cage ENABLING the awd but the awd is not engaged until the hillird senses a 20% difference ( i.e. 1/5 wheel spin) in the speed of the rear wheels to the front. It does this I understand by the difference in the front driveshaft speed compared to the front axle speeds causing the rollers in the cage to mechanically move inward and grab the front axles. This is called "wedging" and is hilliards patented design. I have read a lot about this and it is still a complicated concept to visualize. Hilliard has a website that explains it to some extent but not specifically for atvs.

 

 

So it is still activated electronically ....but engaged mechanically....Is that what your saying.......THANKS>

 

Yep--activated/enabled elect. but engages machanically... you got it. How hilliard ever thought it up is pretty amazing.