Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is the proper way to pack tapered roller type wheel bearings?

Tapered roller wheel bearings need grease to fill every gap between the rollers and the races so each roller stays lubricated as it rolls. If you only partially fill or just pack the outer race, some spaces won’t have grease, leading to dry surfaces, faster wear, and heat. By kneading grease into the bearing and rotating the race while you work, you force grease into all the spaces between rollers and between rollers and races. You’ll know it’s done when grease starts to squeeze out from the edges, showing the gaps are filled. Packing only the outer race or filling halfway leaves portions unlubricated, which is why the correct method is to fill all the spaces between the rollers.

Tapered roller wheel bearings need grease to fill every gap between the rollers and the races so each roller stays lubricated as it rolls. If you only partially fill or just pack the outer race, some spaces won’t have grease, leading to dry surfaces, faster wear, and heat. By kneading grease into the bearing and rotating the race while you work, you force grease into all the spaces between rollers and between rollers and races. You’ll know it’s done when grease starts to squeeze out from the edges, showing the gaps are filled. Packing only the outer race or filling halfway leaves portions unlubricated, which is why the correct method is to fill all the spaces between the rollers.