Transmission output shaft seal leak

Usually a bad or failing front output shaft seal will produce a few symptoms that can alert the driver of a potential issue. Fluid leaking from the transfer case. The most absolute most common symptom of a problem with a front output shaft seal is fluid leaking from the front of the transfer case.

A4uj This video deals with changing the output seal on a transmission if you have a 4xit will take a bit more work. The most common leak points on automatic transmissions are the input and output shaft seals. There is a shaft on the front of the transmission that slides either into the clutch plate or the torque converter that has splines on it. Transmission leak repair. An output shaft seal , or what is also called an axle shaft seal , is the seal located between the driveshaft, and transmission panel.

How to find transmission leaks in your car. It is a circular disk designed to keep transmission oil from leaking onto the driveshaft. A fluid leak may develop from the propeller shaft seal on the rear of the transmission. Our technicians tell us that replacing the seal will commonly correct this concern. Learn about this problem, why it occurs, and how to fix it.

Replacing transmission oil seals.

This seals the driveshaft where it attaches to the output shaft of the transmission. It is attached at this point with the use of splines. As the vehicle moves, the driveshaft moves in and out as bumps are encountered. Again catch the transmission fluid. Make sure the rubber seal on the extension housing is intact.

You should see something similar to the above photo depending on what type of transmission you have. Make a mental note of where the metal cup is located at on the output shaft and slide the cup off. If you get a transmission leak from this, there are many areas of the transmission to check. Most commonly, you’ll find the leaky seal in either the input shaft or output shaft. For the last 30K or so (160K total), I have had a leaking rear output shaft seal on the transfer case.

I replaced the seal several times ($each time) and it would stop for around 5K then start leaking again. I tried buffing the sealing surface on the slip-yolk (the piece that goes into the t-case) and it would still leak. Also I remember reading about some other seal inside the transfer case that could be leaking causing fluid to leak out of the output shaft seal. How do you change the rear output shaft seal leaking at rear of transmission only when running. This distributor gear is filled with gear lube, it has the gears that drive the the transmission output flange and the final drive - front, on the forward bottom side of the transmission.

Since your van is older with low miles that seal could be old and hard. When you put it into reverse the shaft spins the opposite direction so it could stretch that seal allowing for a bit of a leak. Ok so my rear output shaft seal (aka rear transmission seal , extension seal or rear transfer case seal ) started leaking.

I am thinking its an oil seal and those are pretty easy since I have done lots of them. The odd thing is that the leak is not dead center of the rear, it’s more to the left (or right if you’re really having a bad day). What you are probably experiencing is the failure of the output shaft seal (normally the driver’s side in the C5).

A latex bore coat seals the outer diameter leak path and helps compensate for minor bore. Last couple of times the bike has been to the shop, we were told the trans output shaft seal would need to be replaced eventually. The vehicle in this video has a leak in the front main seal of the automatic transmission. The seal is pretty cheap, but you have to pull the transmission off to replace it, which can take a serious amount of time. The re-sealer is a better solution, a polymer oil that can mix with all kinds of oils.

ProbleIve developed a slow but steady leak of transmission fluid out the back of the 6spd transmission where the driveshaft goes into (right above the exhaust, so it stinks like all hell too). A friend of mine (subaru tech) told me its a Rear output shaft seal leak and its not uncommon. Don’t just repair a leak , prevent future problems with a. Output Shaft seal leaking.

You may notice a leak toward the rear of your transmission. Be sure to check the shift selector shaft seal as well. The driveshaft output shaft seal can leak over time as the sealing lip wears.

See our tech article on manual transmission selector shaft seal replacing.

Shift shaft seal is a common leak. The Hannigan folks gave me an idea of how to go about removing stuff and from there on it went well. Save th3output shaft seal to get e. Wonder if gear lube oil in the transmission actually come out through the center of the transmission output shaft and leak out between the two mating surfaces? I figure the only way this gear lube could come out at this area would be a faulty seal on the transmission output shaft.

Initially I changed the rear seal and that stopped it, but now its leaking out of the yoke (through that small pin hole in the center, behind the U-joint) Is there supposed to be ANY tranny fluid in the tail shaft ? If you jack the rear of the truck up a bit you will not have to drain the transmission. That sai if the leak is at the transfer case input shaft seal , and the transfer case oil level is increasing, only the transfer case needs to be removed to replace its input shaft seal. If the leak is external (leaking out and puddling on the floor) the transfer case needs to be unbolted and split from the transmission just enough to uncouple. We work hard to build a great website for car parts, so start perusing and see what you find. If you know your Year Make Model, put it in the selector so that we can guide you to a product that fits your vehicle.

The output shaft seal controls transmission oil leakage around the driveshaft. Continued failure of this seal usually indicates a worn output shaft bushing. If so, there will be signs of the same wear on the driveshaft where it contacts the seal and bushing. Recently I encountered a situation where fluid was leaking from the rear of the transmission. The owner thinking it was the rear seal at the output shaft housing - replaced the seal.

A few days later the leak reappeared and the owner brought the car to my shop to diagnose the situation. My problem has been with a slight dripping of transmission oil from a leaky tranny tail shaft seal. Here is an older thread on this topic which contains a photo of the transmission output shaft seal area on an R100GS with the swingarm removed.

This photo shows that access to the seal is quite good. When I changed the seal on my R100GS, I took some photos. Its a very common problem with the dodges. I use the Cub many years with the front seal leaking because it didn't appear that I was loosing enough gear lub to bother with.

The transfer case takes any kind of ATF.