2007 Sportsman 800

When I engage AWD the active descent control kicks in under 15 mph. I am hearing a grinding noise when ADC is working under 15 mph. I hear it when descending steep grades. I do not hear a noise when powering or above 15 mph. It seems to be consistent with the ADC.

I have checked ADC fluid and front transfer case, all is full and in accordance with the manual. I am using the proper fluids. The ADC works, it just makes a horrible grinding noise under 15 mph while slowing.

Help?

 

if i remember right it only works under 15 mph or w/ no throttle used. has the fluid been changed? just wondering if any metal was seen in it? mine doesnt make any noise when its working and i gave it an exteme work out a few ekks ago coming down huge sleep mts. w/ 2 people as well.

 

only time i have seen this is air in the system got to bleed it......

 

How do I bleed the ADC system?

 

Mine does the same thing and I also checked the fluids and they appear to be full. someone on this forum suggested I replace the fluids and see if that helps. Also how do you bleed the system? as someone above suggested. Just replace the fluids or what?

 

here you guys go. hopefully you can read it as i did it real quick.