standardbyker88
+1y
the important thing on doing this is making sure to not overtighten the bearing load. you do and you will screw yourself.
what you do is change out your inner and outer bearings. then put the new grease seal in. get the flange about level with the body of the hub. install it back on the spindle. put the big washer and the bit nut back on. get the big nut down to zero lash, not snug, just where the bearings are starting to touch. shouldnt have any (or very little) side to side play on the spindle. now back it off about a 1/4 turn. spin the rotor, should have a slight drag, but nothing much really. install the sheetmetal nut cover, then a NEW cotter pin of the correct size. after that, install the calipers and such. put the wheel on, then test drive it. feel the center of the wheel, if its more than a slight bit warm (roughly the same as any other part of the truck) go back and loosen the nut some. too tight and you will burn all the grease out and screw stuff up.
while you are changing stuff, i would go ahead and order up new calipers that are the same year as the 5 lug stuff (87-91). get new brake hoses too. easier to do it all now and know you have perfect front brakes than to ruin something and fix it later. and make sure to bleed the brakes out a few times. i just did all this on my ramcharger, except i didnt swap bolt pattern doing it. good luck.