What is the method for replacing the front wheel bearing of an electric vehicle?
3 Answers
Electric vehicle front wheel bearing replacement method is: 1. Lift the vehicle and remove the front tire; 2. Remove the bearing fastening nut; 3. Remove the vehicle brake disc and brake caliper; 4. Remove the front wheel bearing and install the new bearing; 5. Reinstall other components in reverse order. The function of the bearing: To bear weight and provide precise guidance for the rotation of the hub. The components of an electric vehicle are: power battery, chassis, body, and electrical system. The power battery consists of battery modules, battery management system, thermal management system, electrical and mechanical systems. The chassis consists of drive motor, control system, driving system, steering system, and braking and energy recovery system.
I tried replacing the front wheel bearings myself, and the process was quite laborious. First, find a safe location, engage the parking brake, and use a jack to lift the car and remove the tire—remember to use jack stands for safety. Next, remove the brake caliper and brake disc, marking their positions for easier reassembly. The key step is removing the old bearing, which requires a specialized bearing puller; regular wrenches won’t budge it. When installing the new bearing, apply some lubricant and use a press tool to slowly push it in—never hammer it, or you’ll ruin it. Finally, tighten the hub bolts to the specified torque and reinstall the brake disc and tire. After finishing, test-drive to check for unusual noises. For beginners, it’s best to consult a professional mechanic, as this involves critical driving safety.
Last time my electric car's front wheel was making a humming noise, the mechanic said it was a bad bearing. Replacing it required lifting the vehicle, removing the tire, and then disassembling the hub assembly. They used hydraulic tools to press out the old bearing and install a new one, with the key being the precision of the bearing installation. After installation, they also had to calibrate the ABS wheel speed sensor because the sensor relies on the bearing's magnetic field to function. I specifically reminded the mechanic to pay attention to the torque wrench tightening specifications, as too loose or too tight would affect the bearing's lifespan. Finally, we test-drove the car for several laps to ensure there were no abnormal noises. The repair took three hours, with most of the time spent on calibration and cleaning the components. I recommend everyone regularly check for bearing noise and replace them in time to avoid breaking down on the road.
