MINI Cooper Transmission Axle Seal

Axle Seals

Some axle seals are designed to serve a dual purpose. They contain and protect the brakes and sealed ball bearings from the differential fluid. The housings contain an inner as well as an outer axle seal. The inner seal contains the differential fluid, protecting the factory sealed bearing assembly. The outer seal contains fluid and protects the brake system. A bent axle may cause continued axle seal failure. If the axle shaft is bent, it should be replaced. Worn bearings will result in axle seal failure. They can be identified by a whining or whirling noise that increases with vehicle speed.

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2. Puddles of fluid

One of the most common and most noticeable signs of a problem with one of the vehicle’s axle shaft seals is a puddle of fluid. When the axle shaft seal fails, gear oil or transmission fluid may leak from the transmission or differential. Depending on the location of the seal and the severity of the leak, a bad seal may sometimes cause the differential or transmission fluid to leak out entirely. A leaky seal should be addressed as soon as possible, as a transmission or differential low on fluid because of a leak can quickly become damaged by overheating.

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