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Oil Seals

Lubricant leaks from a oil seal may be caused by any of the following:

To determine the actual cause of the leak, clean the area around the leak. Observe the area of the leak and determine the if the seal or another component is determine the if the seal or another component is causing the leak. A worn seal as surface will cause a leak at the sealing lip while a misaligned seal or a seal installed into a housing with an excessive bore will cause the seal to leak at the outside surface of the seal. Hardened or cracked seal lips usually indicate the axle is operating beyond the normal temperature limits for the axle. A seal whose sealing surface has been nicked or cut may indicate that the shaft has a rough burred, or gouged surface and will need to be inspected before the seal can be replaced.

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