Repack Wheel Bearings: A Step-by-Step Guide to Avoiding Costly Repairs
Repack Wheel Bearings: A Step-by-Step Guide to Avoiding Costly Repairs
Repacking wheel bearings is a critical maintenance task for any vehicle owner. Neglecting this simple procedure can lead to premature bearing failure, which can result in costly repairs or even accidents.
Benefits of Repacking Wheel Bearings
- Extended bearing life: According to the National Highway Traffic Safety Administration (NHTSA), repacking wheel bearings can extend their lifespan by up to 50%.
- Improved safety: Properly lubricated bearings reduce friction, which can prevent overheating and the potential for bearing seizure.
- Reduced maintenance costs: Repacking bearings is a relatively inexpensive procedure compared to replacing failed bearings.
How to Repack Wheel Bearings
Tools and materials you'll need:
- Bearing repacker tool
- New wheel bearing grease
- Safety glasses
- Gloves
Step 1: Remove the wheel
- Loosen the lug nuts but do not remove them completely.
- Jack up the vehicle and remove the wheel.
Step 2: Remove the brake caliper and rotor
- Unbolt the brake caliper and hang it on the suspension using a bungee cord.
- Remove the rotor.
Step 3: Remove the bearing assembly
- Remove the dust cap and cotter pin.
- Use a 32mm socket to remove the axle nut.
- Pull the hub assembly off the spindle.
Step 4: Repack the bearings
- Clean the old grease from the bearings and races using a solvent.
- Apply a liberal amount of new grease to the bearings, races, and seals.
- Use a bearing repacker tool to evenly distribute the grease.
Step 5: Reinstall the bearing assembly
- Place the hub assembly back on the spindle.
- Tighten the axle nut to the specified torque.
- Install the cotter pin and dust cap.
Step 6: Reinstall the brake caliper and rotor
- Install the rotor and brake caliper.
- Tighten the caliper bolts to the specified torque.
Step 7: Install the wheel
- Place the wheel on the hub and tighten the lug nuts.
- Lower the vehicle and torque the lug nuts to the specified torque.
Common Mistakes to Avoid:
- Using the wrong type of grease: Using a grease that is not specifically designed for wheel bearings can lead to premature failure.
- Over-tightening the axle nut: This can damage the bearings and spindle.
- Not repacking the bearings often enough: Repack bearings according to the manufacturer's recommendations, or at least every 30,000 miles.
Getting Started with Repacking Wheel Bearings:
- Safety first: Always wear safety glasses and gloves when repacking wheel bearings.
- Consult your vehicle's service manual: Refer to the service manual for specific instructions for your vehicle.
- Use a quality bearing repacker tool: This will ensure that the grease is evenly distributed.
Industry Insights:
- The average cost of replacing wheel bearings: According to YourMechanic, the average cost of replacing wheel bearings ranges from $150 to $350 per wheel.
- The importance of regular maintenance: Repacking wheel bearings is an essential maintenance task that can prevent costly repairs and accidents.
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