I have question about my 4wheeler , have some issues i find out left rear cv joint was pop out of differential , so i order new cv joint replace and still same problem i dont know why pop out when i lock in differential try to pull out can't , and when i take for ride cv joint is out , and second thing is when i go slow they little shake when thy pickup speed its fine , do u have any answers for , thank you

 

Best to really replace the drive shaft as an assy. Costs more doing it joint by joint. New drive shaft may cure the problem,plus if the circlip area recess in the rear diff gear case sprocket is worn it may cause the joint to pop out,plus even rear shocks that are worn can cause excess pressure on drive shafts when they squat down and yank em out. Try adjusting stiffness of spring settings on shocks and see if that helps first.http://www.ebay.com/itm/Niche-IndustriesTuff-Axle-Rear-Drive-Shaft-Polaris-Sportsman-500-RSE-1999-2001-/321691479390?hash=item4ae64e6d5e&vxp=mtr