What does an output shaft seal do?

The output shaft seal, sometimes called the rear transmission seal or driveshaft seal, prevents fluid from escaping where the driveshaft yoke slips into the transmission. Front-wheel drive vehicles have two “rear” transmission seals, one for each axle.

What causes output shaft seal to leak?

Running the engine consistently with a low oil level can make the seal too hot or dry it out so that it warps and starts leaking. Driving with an overheated engine may have the same result. Adding too much fluid can “blow out” a seal, especially on a transmission. A gouged, dirty or dented seal will probably leak.

How much does it cost to replace a shaft output?

Transfer Case Output Shaft Oil Seal Replacement Cost – RepairPal Estimate. Labor costs are estimated between $164 and $207 while parts are priced at $48. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

What is a front output shaft seal?

The front output shaft oil seal is located on the front of the transfer case on a four wheel drive vehicle. It seals the oil into the transfer case at the point where the output shaft meets with the yoke for the front driveshaft. This can lead to a loss of control of the vehicle.

Is transfer case leak bad?

The transfer case is a self-contained unit that has its own fluid. A leak could be from a bad seal or an issue locked within the case itself. These seals can dry up, wear out and break. Once this occurs, the fluid can no longer lubricate the parts within the transfer case.

Where is the output shaft seal located?

The transfer case output shaft seal is located on the transfer case of four-wheel drive vehicles. The transfer case physically changes between two-wheel drive neutral, to low four-wheel, and then to drive high four-wheel.

Do transmission sealers really work?

no they dont work. Not for any leak that is actually needing to be fixed. Most stop leak has chemicals that will swell up the rubber seals which may temporarily stop a leak, but as the rubber seals swell up, they will quickly deteriorate to the point of being completeley ruined within days of using the stuff.

Does Lucas Transmission Stop Leak work?

Compared to how much you’d have to pay for a repair, Lucas Transmission Fix can be a cost effective solution for a problematic transmission. Does it work? It usually does, as long as the issue is caused by the common symptoms of slipping, hard shifting, and seal leaks and it hasn’t become too serious.