Which maintenance procedure applies to wheel bearings?

• A. Clean, lubricate, and replace as necessary
• B. Replace only when visibly damaged
• C. Only lubricate and never replace
• D. Ignore noise from the wheel area

Answer: (A)

Regular wheel bearing maintenance uses a full cycle: clean to remove old grease and contaminants, inspect for wear or damage, then lubricate with the proper grease, and replace components as needed. Cleaning helps you see wear and remove debris that can grind away bearing surfaces. Inspection catches issues like play, roughness, or pitting that lubrication alone can’t fix. Re-lubricating restores proper lubrication film to reduce friction and heat, which is essential for smooth rotation and longevity. If wear or damage is found, replacing the bearing or seals is necessary to prevent failure. This combined approach is necessary because bearings can degrade even without obvious visible damage, and skipping any step (like cleaning or inspecting, or replacing only when there’s obvious damage) increases the risk of overheating, noise, or seizure. Ignoring noise or relying on lubrication alone won’t address wear or contamination.