Transfer case question

[Searcher67]

I noticed today that I have a NP 231 transfer case...

I've looked around and found that this is command trac..

Is this what most Libby's have?

What is the advatage/disadvantage?

Thanks

 

[HoosierJeeper]

Yep, most KJ's have it.

Advantages: Slightly stronger than Selec Trac.

Disadvantages: No full time 4wd. Selec Trac can be used anytime you want.