Two technicians are discussing differentials. Technician A says that all differentials are vented. Technician B says that a clogged vent can cause the rear axle seal to leak. Which technician is correct?

Question

Quizplus · Accepted Answer

Both technicians are correct. Differentials are vented to allow pressure inside the housing to equalize with atmospheric pressure, preventing vacuum or pressure buildup. A clogged vent can indeed cause increased pressure inside the differential, leading to leaks at the rear axle seal.

Two Technicians Are Discussing Differentials