PART TIME 4wd has NO CENTER DIFFERENTIAL.
if the hubs are not locked its not in 4wd, so the points are moot.
the issue is wind up, here is the factory TSB explaining HOW to get UN WOUND UP! (ah RTM?)
in 4wd you can do this ( bad) easy by testing and turning on hard asphat or concrete.
so put 2 right wheels in the ditch (sand,gravel,dirit,or sod ) and engage 4wd
and say see it works.) or go off road.
you will and can wind it up on the road. in true 4wd,
some go straight and avoid this, but , why do that?, why stress part time system like that.? risk?
weakens and stretches the CHAIN TOO.
WHEN, the front hubs are not locked t
he axles spin free
and are safe as bird.
unlocked the axles are making hot grease, that is all.
need wiki animations, have em.
this TSB is for dweebs , who do that and cant figure how to get undone, sad.