How To Rebuild Cv Axle

How to Rebuild a CV Axle: A Comprehensive Guide

Replacing a CV axle can be a costly repair, but rebuilding one yourself can save you a significant amount of money. This guide provides a step-by-step walkthrough, offering valuable tips and insights to ensure a successful rebuild. Remember, safety is paramount. Always use proper safety equipment and consult your vehicle's repair manual for specific instructions and torque specifications. This guide offers general advice; your specific vehicle may vary slightly.

Tools You'll Need:

Before you begin, gather the necessary tools:

• CV axle boot kit: This contains a new boot, clamps, and grease. This is essential as the boot protects the internal components from the elements.
• Grease: Use only CV joint grease, specifically designed to withstand the high speeds and pressures within the axle.
• Pry bar: Useful for removing the axle shaft.
• Hammer: A rubber mallet is preferable to avoid damaging components.
• Socket wrench set: You'll need various sizes for different bolts.
• Torque wrench: Essential for tightening bolts to the manufacturer's specifications.
• Penetrating oil: Helps loosen rusted or seized bolts.
• Jack and jack stands: Safety first! Never work under a vehicle supported only by a jack.
• Wheel chocks: Secure the vehicle to prevent accidental movement.
• Clean rags: Keep your work area tidy.

Step-by-Step Guide to Rebuilding a CV Axle:

1. Preparation is Key:

• Safety First: Park your vehicle on a level surface, engage the parking brake, and chock the wheels. Raise the vehicle using a jack and securely support it with jack stands.
• Locate the CV Axle: Identify the damaged CV axle.
• Remove the Wheel: Remove the wheel and tire assembly from the affected side.

2. Removing the Old CV Axle:

• Disconnect the Axle: Disconnect the CV axle from the wheel hub using the appropriate socket and wrench. This often involves removing cotter pins and castle nuts.
• Remove the Axle Shaft: Carefully remove the axle shaft from the transmission or differential. This can require a pry bar; use caution to avoid damage.
• Inspect the Axle: Once removed, thoroughly inspect the axle shaft for any significant damage, bends or excessive wear. If there is significant damage, replacement might be necessary rather than rebuild.

3. Rebuilding the CV Joint:

• Remove the Old Boot: Carefully remove the old CV boot, taking note of how the clamps are attached.
• Clean the Joint: Thoroughly clean the CV joint of old grease and debris. Use a solvent or degreaser if necessary.
• Inspect the CV Joint: Inspect the CV joint for wear and tear. Look for signs of significant damage to the ball bearings or races. If damage is excessive, a complete CV axle replacement will be required.
• Pack with Grease: Pack the CV joint with fresh, high-quality CV joint grease until it's fully saturated and excess grease begins to come out.
• Install the New Boot: Install the new CV boot over the CV joint, ensuring it's properly seated. Secure the boot with the new clamps.

4. Reassembly:

• Install the Axle: Carefully install the rebuilt CV axle back into the transmission or differential.
• Reconnect the Axle: Connect the CV axle to the wheel hub, tightening the nuts to the manufacturer's specifications using a torque wrench.
• Replace the Wheel: Reinstall the wheel and tire assembly.
• Lower the Vehicle: Lower the vehicle carefully and remove the jack stands.

5. Final Checks:

• Test Drive: Test drive your vehicle to ensure the CV axle is functioning correctly. Listen for any unusual noises, such as clicking or popping, which could indicate a problem.
• Check for Leaks: Inspect the boot for any leaks or damage after the test drive.

Conclusion:

Rebuilding a CV axle can be a rewarding experience and a substantial cost saver. By following these steps and prioritizing safety, you can confidently tackle this repair. Remember, if you are uncomfortable performing this repair, consult a qualified mechanic. This guide provides general information and should not be considered a substitute for professional advice. Always consult your vehicle's repair manual for specific instructions and torque specifications.