My transmission was leaking a lot of gear oil all over. So earlier this summer I swapped out the output shaft seal thinking that would fix it. I figured it was leaking oil, so I added more (through the shifter.) But soon, I heard the oil dripping on the floor of my garage. The guys at the parts store said I probably over filled it. I swapped out the seal one more time, just to be sure. I'm still leaking oil though. Could there be something else wrong? Do I have to seat the seal a certain way? I just put it in till it was flush with the trans. Suggestions? Mahalo.
To fill the transmission, you have to remove the check/fill "plug". Remove this plug, let all excess oil flow out. If none flows out, stick your pinky finger (smallest) stick in the hole, if oils on the bottom of the finger (note: stick finger straight, do not bend) you're good, if no oil on finger you fill through that hole (NOT via the shifter) until it gently flows out of the check/fill plug hole. I agree with the parts store, you probably overfilled. Some people use some type of sealant when replacing the seal(s). Don't forget to get a "seal driver" or something about the same size as the seal to beat it in to the transmission. So it's flush and tight.
Id try what 84toy mentioned however I had to replace my output shaft seal 4 times in a row because the cheap ass timken seals I was getting the slightest bump when putting driveline back into the shaft would tear the thin overlap seal enough to cause a leak. So if you're using timken seals just be careful when putting the driveline back in those things are freaking cheaply made pieces of crap.
