Before servicing the rear axle bearings on a 248 RBI, take off the wheel and tire and then remove the brake drum. Following this, disconnect the axle shaft and, using Socket DD-1241-JD, take out the lock wedge and adjustment nut. You can then take off the hub assembly so the outer axle bearing can be removed. Throw away the grease seal and use Installers 5064 and C-4171 to drive the grease seal and the inner bearing out of the hub and hand tighten the nut. Bearing cups are removed from the hub bore with a brass drift or the proper removal tool. Before putting the bearing cups in with Tools 8151 and Handle C-4171, use a certain cleaning solvent to clean both the axle bearings and the inside of each hub. Add Mopar wheel bearing grease or an alternative to the inner and outer bearing areas and grease the outer and inner surfaces of each bearing cup. Having installed the inner axle bearing in the hub, fit a fresh grease seal, press the seal in with Installer 8149 and Handle C-4171. Check along the bearing and seal sides of the axle tube for any roughness or burrs and remove any you find. Closely line up the hub and axle, but do not touch the grease seal to the sides of the axle tube threads as you install them. First install the outer axle bearing, then put on the hub bearing adjustment nut with DD-1241-JD, tightening it to 163 - 190 Nm (120 - 140 ft. lbs.) while you rotate the wheel. Make one or two small revolutions with the adjustment nut to obtain 0.025 - 0.250 mm (0.001 - 0.009 in.) wheel bearing end play and align the locking wedge with the keyway and nut. Then, put back the axle shaft, brake drum and wheel and tire assembly.