What is output shaft bearing?

A front output shaft bearing is a component that is commonly found on vehicles equipped with transfer cases, such as all wheel and four-wheel drive vehicles. The bearing keeps the shaft from wobbling as it rotates, and thus allows it to spin smoothly so that power can be transferred efficiently.

When do you need a front output shaft bearing replacement?

If you suspect that your vehicle may be having an issue with the front transfer case bearing, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the the car will need a front output shaft bearing replacement.

Can a bad shaft bearing cause an oil leak?

If the output shaft bearing becomes damaged, it can cause gear oil to leak from the transmission. An oil leak from the transfer case will put the unit at risk of running low and suffering damage due to lack of lubrication.

What causes a noisy front output shaft bearing?

Noisy drivetrain. One of the first symptoms of an issue with the vehicle’s front output shaft bearing is a noisy drivetrain. If the bearing becomes excessively worn or dries up, it can cause the drivetrain to make abnormal sounds when the four-wheel drive system is engaged.

What are the symptoms of a worn out shaft bearing?

A worn or dried out bearing may produce howling or whining noises, and in more serious cases, even grinding noises. The sounds may change in volume or pitch according to the speed of the vehicle. 2. Excessive vibration from the drivetrain