4x4 not engaging 2000 ranger

[kikylep]

okay now i have a 2000 ford ranger and i live in some pretty harsh winters here in north Dakota but my four wheel drive has not been engaging and my little vacuum pump has gone out in it so i just manual engaging then but today i was driving and switch over in the schools parking lot and got into a spot that was about 4 or 5 inches deep covered in snow but then i drove out and leaving the parking lot i noticed that the back end was slipping out so i checked if my four wheel drive was in and the light was on so then i switched it off and then switched it back then tried it again and the same thing so then i turned it off and then went to a hill and got it so the back wheels would spin then i switched it over hoping i would hear a thud (i no its not the best thing in the world to do but its a easy way to check) so there was no thud so i assume that maybe it was the shifter motor so i went under the pickup and listened and i had my dad switch it over and i could here the shifter motor switched over so then yeah gave up and turned to you guys

 

[kikylep]

oh i forgot to also add that i can no longer put it into 4wd low so yeah idk

 

[racing83x]

its possible that your t case is shot but very unlikely. maybe the switch on the dash went bad. that happens alot too. do you know which transfer case you have?

 

[kikylep]

okay found out that it was a stupid ****en hub so now the question is how do i found out the size i need for manual hubs that are reliable