The axles move into the cv joints when the suspension is compressed and they move out when the suspension is extended. There is a snap ring on the end of the cv shaft that goes into the transmission and sometimes the snap ring isn't seated completely or is weak and lets the joint slide out. Sometimes just cleaning everything and greasing the shaft and shoving it back in is all that it needs. But getting it checked out is a good idea in case the snap ring is compressed or weak.
This happens mostly on vehicles with lift kits, but still happens on stock ones occasionally. Sometimes the end of the shaft breaks off at the snap ring groove.
Just an update: sent my dealer pictures of damaged axle, they were great to deal with. They sent the pictures to Polaris who ok'd the warranty claim, I brought in the damaged axle they had a new one waiting for me. Glad to see Polaris stands behind their product, very satisfied customer.
I used Sea to Sky Motorsports. The remember my name when I walk in. Nick the sales manager is a great guy to deal with. Be careful of the young lad in the shop if he moves your rigs with the forklift. He damn near dumped my ace on the ground. When I picked it up after repairs I was sure to watch him like a hawk. He did fine the second time. LOL
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