Technician A says that bearing clearance can be reduced by as much as 40% with aluminum bearings. Technician B says excessive crush will allow a bearing to move back and forth in the bore. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because aluminum bearings can indeed accommodate a reduction in bearing clearance due to their material properties, allowing for tighter tolerances and improved engine performance. Technician B is incorrect; excessive crush does not allow a bearing to move back and forth in the bore. Instead, it ensures the bearing stays securely in place by providing a tight fit.

Technician a Says That Bearing Clearance Can Be Reduced by as Much