Rear Axle Shaft Semi-Float Failure Symptoms and Service

The semi float rear axle shaft transmits power from the differential to the drive wheel assembly through splined engagement with differential gears. Common failure symptoms include vibration at higher speeds due to imbalance, grinding or clicking noises during turns or acceleration, and visible oil leaks from the axle seal. Workshop observations may reveal excessive play or runout at the hub flange, damaged wheel bearing surfaces, or twisted and fractured shaft splines. Proper service requires inspection of splines and hub runout, correct axle seal depth installation, bearing preload verification, and careful handling to avoid impact damage while adhering to manufacturer torque specifications.