If you’ve ever dealt with a wobbly or noisy wheel, you might be facing an issue with your wheel hub or bearing. Knowing “How to Replace a Wheel hub” can save you both time and money.
Whether you’re looking to replace wheel bearing or entire hub, this guide will walk you through each step to ensure a smooth ride ahead. Let’s dive in!
What Is a Wheel Bearing Hub?
A wheel hub assembly is a pre-assembled component that includes precision bearings, seals, and sensors and is in charge of mounting the wheel to the vehicle.
The wheel hub assembly, also known as a wheel hub bearing, hub assembly, wheel hub unit, or hub and bearing assembly, is an essential component of your steering system that helps ensure safe steering and handling of your car.
The wheel hub assembly is located between the driving axle and the brake drums or discs on each wheel. The wheel is fastened to the wheel hub assembly’s bolts on the side facing the braking disc. On the side of the drive axle, the hub assembly is either bolted on or pressed into the steering knuckle.
You must first remove the wheel, followed by the brake caliper and rotor, to see the wheel hub assembly.
Wheel Bearing VS Wheel Hub
Both the wheel bearing and the wheel hub are essential parts of the wheel assembly of a vehicle, yet they serve different purposes and exhibit different qualities. Here is a brief explanation:
Wheel Bearing
The main goal of the wheel bearing is to reduce friction during the smooth rotation of the wheel. It guarantees a comfortable ride while supporting the vehicle’s weight. Typically, it consists of a metal ring holding a group of steel balls or tapered rollers.
Wheel bearings can become worn down over time due to friction, a lack of lubrication, or carrying too much weight. A worn-out wheel bearing frequently makes a grinding or buzzing sound.
Wheel Hub
The mounting assembly for the wheel is the wheel hub. It keeps the wheel in position, guaranteeing proper alignment and a tight fit with the axle. The wheel bearing is usually located in this important part. The hub is where rotors or drums for the brakes are attached.
Use and Abuse: The lifespan of hubs is often much longer than that of bearings. However, the hub’s performance could be impacted if the bearing inside the hub suffers damage.
Although they are separate parts, they cooperate to guarantee that the wheel turns properly and keeps its position on the vehicle. To ensure the safety and functionality of your device, it’s critical to resolve any suspected issues with either as soon as possible.
How Many Hub Bearings on a Car?
Each wheel on every car has a hub bearing. So, a conventional four-wheeled car would require four hub bearings. These bearings are essential for allowing the wheels to turn smoothly and bearing the vehicle’s weight.
Check it out if you think one of your hub bearings is deteriorating (perhaps because you’re experiencing a grinding noise or vibration while driving). Additionally, think about having all four inspected while you’re at it. The others might also be on their way even if one is showing wear symptoms.
Symptoms of a bad Wheel hub assembly
Some of the symptoms of bad Wheel hub assembly are listed below:
Noisy Wheels
One of the most common signs of a failing hub assembly is unusual noise from the wheels.
You may hear grinding, humming, growling, or even roaring. These noises often suggest the bearings inside the hub assembly are deteriorating.
Loose or Wobbly Steering
A bad hub assembly can affect the car’s alignment and steering. The steering wheel may feel less responsive or wobbly, especially when making turns.
Vibrations in the Steering Wheel
As the hub assembly wears out, it might cause vibrations you can feel directly through the steering wheel. Often, these vibrations become more pronounced as you accelerate.
ABS Warning Light Activation
Modern hub assemblies often have built-in sensors for the Anti-lock Braking System (ABS). If the hub assembly fails, it can disrupt the sensor’s function, triggering the ABS light on your dashboard.
Uneven or Rapid Tire Wear
A faulty hub assembly can alter the wheel’s angle, leading to abnormal tire wear. Check your tires regularly for signs of uneven wear patterns, such as one side of the tire wearing faster.
Vehicle Pulling to One Side
If the hub assembly is severely damaged, it can cause your vehicle to pull to one side while driving. This symptom is particularly concerning as it can affect the vehicle’s handling, especially at high speeds.
If you observe any of these symptoms, it’s crucial to consult a mechanic or automotive professional. Driving with a compromised hub assembly can be dangerous, and timely intervention can prevent more significant, costlier damages to your vehicle.
How Long Does Hub Bearing Last?
Wheel bearings typically lifespan between 136,000 and 160,000 kilometers, or around 85,000 and 100,000 miles. It’s crucial to remember that this is only a general recommendation.
Based on variables like the bearing’s quality and the particular working conditions it is subjected to, the actual lifespan of a wheel bearing might vary greatly.
How to Check Wheel Hub Bearing?
Fortunately, once your wheels are raised off the ground, a damaged hub assembly is simple to identify. If at all possible, check both of your front wheels or both of your back wheels, two at a time.
When two wheels are spun simultaneously, it is frequently possible to identify a broken wheel bearing by comparing their subsequent behavior. It probably has a bad bearing if one trembles, slows down, or grinds to a stop before the other.
Look for “play” to inspect each wheel hub assembly. When a wheel is entirely bolted down, “play” refers to any slack connection between the wheel and the axle. By holding the wheel at its top and bottom, pressing one side while pulling the other, you may determine whether there is play. In this manner, you shouldn’t be able to move the wheel around too much; if you can, the wheel has too much flexibility.
When you find a damaged wheel hub assembly, replace it with OEM components from your manufacturer or high-quality aftermarket components, like WJB’s, that adhere to the same requirements. To keep your cars – and you – safe on the road, it’s essential to ensure your wheel hub assemblies are in good condition.
Front Wheel Bearing Hub Assembly Replacement Cost
One front wheel hub assembly can be replaced for a variety of prices. The make and model of the car, the labor cost at the shop, and the price of the parts are some of the variables. Without taxes, a wheel hub replacement cost is typically around $350 per wheel.
Luxury brands, however, cost more to repair. If one wheel’s bearings fail, replacing the bearings in the other wheel on the same axle is not essential. Don’t let anyone pressure you into doing labor that is not necessary. Search about the wheel hub replacement cost on your own.
How Long to Replace Wheel Bearing Hub?
Replacing a wheel bearing hub usually takes around 1 to 2 hours. Still, the exact time can vary depending on the specific vehicle make and model, the mechanic’s experience, and any complications encountered during the process. It’s a relatively straightforward repair, but it must be done correctly to ensure your vehicle’s safety and performance.
How to Replace a Wheel Hub?
So, how to replace a Wheel hub? The whole process is divided into two parts: removal and installation. Let’s discuss the complete steps for both in detail!
Removal of Wheel Hub
- Put on your protective eyewear.
- The negative battery cable disconnected.
- Take off the wheel’s hubcap or center cap.
- If your axle nut has a cotter pin and lock cover, remove them.
- The axle nut can be loosened using a breaker bar. At this moment, do not entirely remove the nut.
- To remove the lug nuts from the wheels, use a breaker bar. At this moment, refrain from totally removing the nuts.
- Using a jack and jack stand, elevate the car safely and support it. Chock the wheels still on the ground and apply the parking brake.
- Hand-remove the lug nuts. Then, take off the wheel and tire combination.
- Get rid of the brake caliper.
- Using a long zip tie or bungee cable, the brake caliper can be suspended from the upper control arm or another suspension part. This prevents the brake line from becoming overextended.
- Take out the brake pads.
- Remove the mounting bracket for the brake caliper.
- Take off the brake disc. If the rotor still won’t budge, bash it with a rubber mallet from behind.
- By hand, remove the remaining portion of the axle nut.
- If the hub has an integrated wheel speed sensor, unplug the sensor connector and remove any mounting brackets holding the wiring harness in place.
- Tap on the axle shaft tip’s dimpled center with a punch and mallet to separate the shaft splines from the hub splines.
- A breaker bar and socket can remove the wheel hub holding bolts. Tip: Before removing the bolts by force, coat them with penetrating oil and give them time to soak in.
- A new ABS sensor is frequently included with the replacement of front wheel bearing hub components (if the car has one). However, you’ll have to take the old sensor out of the hub if your hub doesn’t come with a new one.
- The hub should now be taken out of the knuckle. The hub rarely comes off easily, so be ready to use a mallet, a pry bar, or a hammer and chisel (for particularly challenging hubs, you might need to use all three).
Installation of Wheel hub
- Slide the replacement hub assembly over the CV axle’s tip and toward the knuckle.
- Replace the ABS sensor, if one is present.
- The hub assembly mounting bolts must be reinstalled. Use a torque wrench to tighten the bolts to the manufacturer’s requirements.
- Reinstall any wiring harness brackets and plug the ABS sensor connector back in.
- Put the hub nut back on, but do not tighten it yet.
- Put the brake rotor back in place.
- Reinstall the mounting bracket for the brake calipers. Use a torque wrench to tighten the bracket fasteners to the manufacturer’s requirements.
- brake pads are reinstalled.
- Use a C-clamp or disc brake spreader to gradually advance the piston(s) in the brake caliper’s bore. Ensure that throughout this process, no brake fluid, which consumes automotive paint, is forced out of the master cylinder.
- Reinstall the brake caliper after cutting the zip tie or removing the bungee. Use a torque wrench to tighten the caliper fasteners to the manufacturer’s specifications.
- Reinstall the wheel/tire assembly on the lug nuts.
- Tighten the lug nuts until they’re snug using a ratchet and socket.
- Lower the car while keeping the jack stands in place.
- Use a torque wrench to tighten the lug nuts to the manufacturer’s requirements.
- Use a torque wrench to tighten the hub nut to the manufacturer’s requirements.
- Reinstall the lock cap on the axle nut and insert the cotter pin, if necessary.
- Replace the hub cap or center cap.
- Connect the negative battery cable.
Wheel Hub Assembly Parts
Several wheel hub assembly kit parts work together to make up a wheel hub assembly. Every element is essential to the assembly as a whole operating.
- Wheel hub
- Wheel studs
- Wheel bearing
- Oil seal
- Dust cap
Final Words
Knowing how to replace a Wheel hub or wheel bearing hub assembly for a smooth and safe ride. Promptly address any symptoms of a bad hub assembly to prevent further damage and ensure safety. Regular maintenance can extend the lifespan of your wheel bearings.
Follow the outlined steps for Wheel hub replacement, and remember that each component in the wheel hub assembly plays a vital role in your vehicle’s functionality and safety. Prioritize quality and safety in your vehicle maintenance.
If you need any help, BWYB Bearing will be your utmost support. Contact us for any front wheel bearing replacement or have wheel hub assembly kit queries! Our professionals are ready to cater for your problems.
