Before fitting the oil seal, it is essential to check that the oil seal, shaft and bore are clean and undamaged. The surfaces the oil seal will come into contact with must be free of sharp points or burrs. The sealing lip is fragile, so even minimal damage can cause a leak. It is also important that the shaft and bore are correctly finished.
Table 14.1. Fluoroelastomers Used in Oil Aging5

front hub oil seal. Most mechanics recommend replacing the front hub oil seal every 60,000 to 80,000 miles, but this can vary depending on your driving habits and the conditions in which you drive.
With a helper holding the engine steady, remove the wedge supports, lower the engine and reconnect the mountings loosely.
