undo the wheels , remove the brake drums
there are 5 nuts on each side behind the axle flange that retain the axle remove these nuts & pull the axle out
undo the 10 nuts on the center carrier , I use a jack to break the seal & lift out the gear set ,
clean the housing & install a new gasket, FelPro has them
& reverse the procedure
if you are using a Clutch type sure grip make sure the Buttons are in place , if not that are avaiable new from Mopar
once you have it back together there is a threaded collar on the right axle & a lock tab that was removed with the 5 bolts tighten or loosen the adjuster until you just feel a slight amout of end play , it should be .008 - .018 make sure you hit the end of the axle hard to push the other axle all the way into the left axle brg & check the play again