1994 montero ls ?

[Montero91]

How can I tell if it has air locker system? I bought it for the motor but it does have disc brake rearend looks like there is some type of locker on front end also ?

 

[jeep-N-montero]

All monteros had rear disc starting in 1992, what makes you think it has a locker? There are threads with pictures showing what to look for, mainly the large orange sticker and air locker switch.