Front end shuttering in 4WD

[JohnnyG]

We are in Marysvale, Utah, where most of our riding is on mountain dirt roads. We generally run between 25 and 45 mph.

Most of the time, 2WD is fine, but there are times when we want to run in 4WD. Lately, I’ve noticed that when it’s in 4WD, there is a shuddering sound coming from the front end. It does not happen in 2WD.

I mentioned it to the dealer, and they said, “They all do it.”

Does your XP do that?

Thanks,
JG

 

[Dale's Snake Pit]

We are in Marysvale, Utah, where most of our riding is on mountain dirt roads. We generally run between 25 and 45 mph.

Most of the time, 2WD is fine, but there are times when we want to run in 4WD. Lately, I’ve noticed that when it’s in 4WD, there is a shuddering sound coming from the front end. It does not happen in 2WD.

I mentioned it to the dealer, and they said, “They all do it.”

Does your XP do that?

Thanks,
JG

Mine makes a grinding and has a bad vibration in 4x4, and it has since day one. I even replaced the driveshaft and front diff with Sandcraft bullet proof options they had, and it didn't fix anything. What's funny is my dealer told me the same thing, "they all do it"

 

[garciava]

Hey Johnny. Mine does the same thing in four wheel drive. has since day one.

 

[JTBarlow]

It’s completely normal. The only SxS with a geared front differential is the Pro R.
Everything else has sprague type differential, and even with 4WD engaged, it only engages the differential when there’s a difference in rotation speed between each side (independently) and driveshaft rotation. The rollers inside the sprague can grab and release rapidly, causing the vibration/growling noise. Despite the sound, it’s not hurting anything inside the differential.

 

[JohnnyG]

Thanks for the explanation JT. That explains a lot.
JG