What Causes Rear Axle Noise in Cars?

[VonMatthew]

The causes of rear axle noise in cars are as follows: 1. Insufficient gear oil or decreased viscosity: This can be improved by changing the oil, ensuring adequate oil levels, switching from multi-grade oil to single-grade oil, or using a higher viscosity grade oil. 2. Noise caused by gear tooth surface damage: Severe damage to the bevel gear tooth surface, excessive wear beyond limits, or excessive clearance. 3. Noise caused by improper bearing clearance: Bearing clearance that is too small or too large, increasing with vehicle speed. High-speed noise accompanied by housing heat indicates excessive bearing preload adjustment. Noise during both acceleration and deceleration is caused by bearing wear or overly loose adjustment.