my 1998 b3000 4x4 won't fully disengage while driving. feels like right front wheel is still engaged since steering wheel pulls severely to right. goes completely back to 2 wheel drive if I disengage while stopped. any ideas?

 

thats the curb side,it seems to get more moisture on that side. you probley have a bunch of coroded parts in the hub (locking part of it) and needs to be taken apart and cleaned and lubricated and put back together. get a good workshop manual. hope this helps.