Changed The Pinion Seal Today
[FONT=Verdana]As I stated in other posts, I've had a slight diff pinion leak on my RS for awhile now and decided last night that today I was going to fix it. [/FONT][FONT=Verdana]I let the diff drain overnight. [/FONT][FONT=Verdana]I had bought a new seal awhile back (National 8181NA) and waited till the winter rainy season to do this. [/FONT][FONT=Verdana]Got it up on the lift, jacked up the back, pulled the left side tire off, and got a light up in there and went to work. [/FONT][FONT=Verdana]I counted the threads showing on the nut, marked everything so I could get back to the exact same point before starting. [/FONT][FONT=Verdana]I come to the conclusion that my leak was coming from the splines, nut, washer area in the yoke, but I went ahead and changed the seal anyway. [/FONT][FONT=Verdana]I probably could have gotten away with just re-RTVing the nut/washer.
[/FONT][FONT=Verdana]Just an FYI: [/FONT][FONT=Verdana]IF you have an actual seal leak, it's most likely going to run down along the bottom of the diff and then back towards the drain plug area. [/FONT][FONT=Verdana]IF you have a spline/nut/washer leak, it's most likely gonna be a very slight leak over time like mine was and will drip off the u-bolt nuts given the way this diff is designed. [/FONT][FONT=Verdana]I got it all back together, dumped 3/4s of a quart of 80W90 gear oil back in her and now waiting for a dry day so I can test ride it. [/FONT][FONT=Verdana]Spinning the wheels while it was jacked up, it felt smooth and, so far, no leaks. But until I get some miles on her, I won't know for sure.[/FONT]