Symptoms of a bad or faulty output shaft front oil seal

Content

Transfer case fluid leak
Hum, whining or growling sound from the transfer case

If your vehicle is XNUMXWD or XNUMXWD and you hear noise or fluid leaking from the transfer case, consider replacing the front output shaft seal.

The output shaft front oil seal is the oil seal that is installed on the front of the transfer cases. As the name suggests, the front output shaft seal is responsible for sealing the front output shaft of the transfer case, keeping transmission oil or transmission fluid inside the assembly. The seal is usually round in shape and made of rubber or sometimes metal, unlike many other automotive engine and transmission seals. Over time, the rubber can dry out and the seal wears out, which can lead to leaks and other problems. Usually, a bad or faulty front output shaft seal causes several symptoms that can alert the driver to a potential problem.

Transfer case fluid leak

The most common symptom of a front output shaft seal problem is fluid leaking from the front of the transfer case. If the transfer case rubber seals dry out or crack, they may leak from the transmission oil or transmission fluid. Fluid leakage can expose the transfer case to internal damage due to insufficient lubrication. Any puddles or drops of liquid found under the vehicle must be removed as soon as possible to prevent the possibility of damage.

Hum, whining or growling sound from the transfer case

Another sign of a problem with the front output shaft seal is a noisy transfer case. This problem usually occurs after the seal has been leaking for a while and the fluid has run out. If the fluid level is low, the vehicle may make a hum, squeal, or transfer case growl, which can be especially noticeable when XNUMXWD or XNUMXWD is engaged. A noisy transfer case can also be caused by a number of other problems, so a proper diagnosis is highly recommended.

Like most rubber automotive seals, front output shaft seals dry out or wear out over time. If you find that the transfer case front seal is leaking or there may be another problem, have a professional technician, such as AvtoTachki, check the vehicle to determine if the seal should be replaced.