What should bearing seals be primarily checked for?

Bearing seals should primarily be checked for leaks because their primary function is to contain lubricants within the bearing and to prevent contaminants from entering the bearing assembly. When seals are effective, they ensure that the grease or oil stays where it is most needed, which helps maintain proper lubrication, reduces friction, and prolongs the life of the bearings.

Leaks can indicate that the seals have deteriorated or are damaged, allowing fluid to escape and potentially leading to bearing failure. Identifying and addressing leaks early is crucial to prevent costly repairs and to ensure safe operation of the vehicle. Regular inspection for leaks is an essential part of maintaining the integrity of the bearing systems in commercial vehicles.