replacing the outer cam requires the removal of the input/ bevel pinion housing. Pay attention to the shim pack thickness for the housing, and the shim for the outer cam. if you attempt this, you will need to make a jig that holds the outer cam in place so it cant rotate, and it will be bolted to the housing as well. then the big nut inside is torqued to around 1300 lbft. if you get this apart, decide on bearing condition. then when you put it back together, you have to press the outer cam in place, as a completed assembly. the pressure is 10,000 PSI.. wrap a string around the housing several times, and pull the string and pull the string with a 'fish scale' from youre tackle box. reused bearing pull at 2-5 llbs, new bearing pulls at 3-6 lbs. this will indicate proper bearing preload. adjust the shim thickness as needed.. once that is done then you need to torque that skinny nut to around 1300lbft. once done then you put the assembly into the carrier housing with 2 bolts holding it in place, and check the tooth pattern for the bevel pinion and the bevel gear, use Prussian blue gel to set the 'root' good, adjust the pattern using the thin shims for the input housing. it is highly possible that the original shim pack will be correct. if so, put her together.. good luck to you, jojo