An output shaft seal, or what is also called an axle shaft seal, is the seal located between the driveshaft, and transmission panel. It is a circular disk designed to keep transmission oil from leaking onto the driveshaft.
How does it work?
Shaft seals are used in order to prevent transmission oil from leaking onto fragile car parts. This car part serves as a barrier in pumps to separate liquids, and confine pressure with its spring mechanism. The output shaft seal can be found in the underside of the driver, or passenger seats of the vehicle.
When to replace an output shaft seal?
If you see transmission oil leakage around the driveshaft, then your output shaft seal may be broken. However, these are confusing symptoms because oil leaks can still occur even if the output shaft seals are working properly. One of the reasons for such problems is a worn out output shaft seal bearing. If the bearing gets damaged, the output shaft seal becomes vulnerable to leaking. Whether you use a 5-speed or 6-speed manual transmission, the shaft seals are basically the same. The only difference lies in the design, and the tools used to install the seals. For vehicles with automatic transmission, the color of fluid leak should be pinkish, while Cars with standard transmission may expect clear liquid leaks.
While there are differences between the two shaft seals, the process used to replace the seals are the same. The procedure can get messy and you can either repair it by yourself or hire a mechanic to do the job for you. It is better to read your car manual, or call technical support to gets answers for your questions. Lastly, have experts inspect your car for fluid leaks every few months to ensure that your car runs smoothly.