We also removed the driveshaft yoke and replaced the seal in the front of the differential. Removing the nut can be a bit of a challenge because its torqued to 190-210 lb-ft, and its important to keep the front yoke from spinning. Tasks like this can make friends or a mechanically inclined wife invaluable. Once the nut and seal are removed, the new seal can be coated with Aviation Sealer and installed. This seal can be tapped in with a gently wielded hammer, but be careful to tap in the seal evenly so as not to distort the seal. Have your friend/wife help you tighten the nut on the front yoke to 190-210 lb-ft again. Once the nut is tight, the rotating torque of the differential yoke should be 15-35 lb-in for model 36 and 20-40 lb-in for model 44 rears.