Key points
- The bearing races are the metal rings that hold the bearings in place.
- Once the snap ring is removed, you should be able to tap the inner race out with a punch and hammer.
- Once the old bearings are out, clean the hub thoroughly with a brush and a shop cloth.
Dirt bikes are built to withstand the rigors of off-road riding, but even the toughest machines can suffer from wear and tear. One common issue that dirt bike owners encounter is worn-out wheel bearings. These bearings are critical for smooth wheel rotation and handling, and when they start to fail, it can lead to a variety of problems, including wobbly wheels, increased friction, and even catastrophic failures. If you’re experiencing any of these symptoms, it’s time to replace your wheel bearings. But before you can install new bearings, you’ll need to know how to get the old ones out. This guide will walk you through the process of removing wheel bearings from your dirt bike, providing you with the knowledge and confidence to tackle this essential maintenance task.
Gather Your Tools and Supplies
Before you begin, make sure you have the following tools and supplies on hand:
- A set of metric wrenches and sockets
- A hammer
- A punch set
- A bearing race remover tool (optional, but highly recommended)
- A bearing race installer tool (optional, but highly recommended)
- Penetrating oil
- Grease
- New wheel bearings (ensure they are the correct size and type for your bike)
Prepare the Bike
1. Park the bike on a level surface and engage the kickstand. This will prevent the bike from rolling while you’re working on it.
2. Remove the wheel: Loosen the axle nut and remove the wheel from the bike.
3. Clean the area: Use a brush and a shop cloth to remove any dirt or debris from around the bearings.
Removing the Bearing Races
1. Identify the bearing races: The bearing races are the metal rings that hold the bearings in place. There will be two races for each wheel bearing, one on the inside of the hub and one on the outside.
2. Use a punch and hammer to remove the outer race: Place the punch against the outer edge of the race and tap gently with a hammer. You may need to use a larger punch as you go to get the race out.
3. Use a bearing race remover tool (optional): If you have a bearing race remover tool, it can make this process much easier. Simply place the tool over the race and turn the handle to remove it.
4. Remove the inner race: The inner race is typically held in place by a snap ring. Carefully remove the snap ring using a pair of pliers or a snap ring pliers. Once the snap ring is removed, you should be able to tap the inner race out with a punch and hammer.
Removing the Bearings
1. Remove the bearings: Once the races are out, the bearings should be loose. If they are not, you may need to use a punch and hammer to tap them out. Be careful not to damage the hub or the bearings.
Installing New Bearings
1. Clean the hub: Once the old bearings are out, clean the hub thoroughly with a brush and a shop cloth. Remove any remaining grease or dirt.
2. Install the new races: Using a bearing race installer tool, gently press the new races into place. Ensure they are seated properly.
3. Install the new bearings: Using a bearing race installer tool, gently press the new bearings into the hub. Ensure they are seated properly.
4. Install the snap ring: If your hub uses a snap ring, install it back in place.
5. Grease the bearings: Apply a generous amount of grease to the new bearings. This will help to prevent rust and wear.
6. Reassemble the wheel: Reinstall the wheel on the bike and tighten the axle nut.
Final Steps and Tips
1. Test the wheel: Spin the wheel by hand to ensure that it rotates smoothly and without any noise.
2. Inspect the bearings: If you hear any grinding or other noises, remove the wheel and inspect the bearings again. Make sure that they are properly installed and lubricated.
3. Repeat for the other wheel: Follow the same steps to remove and replace the bearings on the other wheel.
The Final Word: Keeping Your Dirt Bike Rolling
Replacing your dirt bike‘s wheel bearings is a crucial maintenance task that can significantly impact your riding experience. By following the steps outlined in this guide, you can confidently tackle this job and ensure your wheels are spinning smoothly and safely.
Frequently Asked Questions
Q: How often should I replace my wheel bearings?
A: The lifespan of wheel bearings varies depending on riding conditions, maintenance, and the quality of the bearings. However, it’s generally a good practice to inspect them annually and replace them every 2-3 years, or sooner if you notice any signs of wear or damage.
Q: What are the signs of worn-out wheel bearings?
A: Some common signs of worn-out wheel bearings include:
- Wobbly wheels: A wobbly wheel is a clear indication that the bearings are no longer supporting the wheel properly.
- Grinding or clicking noises: These sounds are often caused by the bearings grinding against each other.
- Increased friction: If you notice that the wheel is harder to rotate than usual, this could be a sign of worn-out bearings.
- Loose wheel: A loose wheel is often a result of worn-out bearings that are no longer able to hold the wheel securely in place.
Q: Can I reuse the old bearing races?
A: It’s not recommended to reuse the old bearing races. They can be damaged during removal and may not provide a secure fit for the new bearings. It’s best to replace them with new ones.
Q: What type of grease should I use for my wheel bearings?
A: Use a high-quality waterproof grease specifically designed for wheel bearings. Avoid using general-purpose grease, as it may not provide adequate protection against moisture and dirt.