What Causes Severe Heating of the Front Wheel Hub in a Car?
1 Answers
Introduction to the causes of severe heating in the front wheel hub of a car: 1. Over-tightened or abnormally worn bearings: The wheel hub is located at the innermost part of the brake drum, specifically the axle head where the bearing is installed upon disassembly. Overheating of the wheel hub (axle head) is usually caused by bearings that are too tightly fitted or insufficient lubrication. Excessive heat can cause the lubricating grease inside to melt and leak, affecting braking performance, and in severe cases, it can burn out the bearings. 2. Brake drag or drum rubbing: The temperature of the brake drum is influenced by environmental temperature, driving speed, frequency of braking, vehicle weight, and road conditions. A few brake applications can raise the temperature to 100-200 degrees, and in heavy trucks going downhill, it can even exceed 300 degrees. If the brake drum is overheating, you can jack up the front wheel of the car and rotate the tire to check for any rubbing. Then, rotate the tire and apply the brakes a few times to see if the brakes return properly or get stuck.