so theres an awsome grinding noise coming from the t-case when im in 4 wheel and backing up in alittle mud... i was getting fire wood today and 4wheel going foward works fine but backing up it makes a very loud grinding noise... ny ideas?

 

U joints

 

mabey the chain in the case

 

no its def not the u joints..... i just had every u joint on the truck replaced.... what would the chain be doing? slipping teeth or something?...

 

Take a look inside