looking for help
 

Hi to everybody. I have a problem with my 93 Ranger 4x4.The front wheel drive doesnt work.Transfer case is working with 4wheel hi button push in.Jacked up the truck with all wheels off the ground.Front drive shaft turns as it should to axle shafts just turn slowly not turning front wheels.Dont know what the problem could be.Any help would be appreciated.
Thanks Ranger Dog