An engine has a burned thrust main bearing. Technician A says that this can be caused by a driver who "rides" the clutch. Technician B says that this can be caused by insufficient clutch pedal-free travel. Who is right?

Question

Quizplus · Accepted Answer

Both technicians are right. A burned thrust main bearing can be caused by a driver who rides the clutch, which overheats and damages the bearing. It can also be caused by insufficient clutch pedal-free travel, which results in constant contact between the clutch disc and pressure plate, leading to excessive heat and wear on the thrust bearing.

An Engine Has a Burned Thrust Main Bearing