How to Replace Front Left CV Axle Assembly 2014-2018 Mazda 3

Introduction

This tutorial provides a step-by-step guide on how to replace the front left CV axle assembly on a 2014-2018 Mazda 3. A worn or damaged CV axle can lead to serious vehicle issues, so following this guide will help you ensure your vehicle runs smoothly and safely. We will cover all necessary tools, detailed steps for the replacement, and tips for a successful installation.

Step 1: Gather Tools and Materials

Before starting the replacement, ensure you have the following tools and materials ready:

• Pry Bar
• 17mm Wrench
• 10mm Socket
• 17mm Socket
• 19mm Socket
• 21mm Socket
• 32mm Socket
• 8mm Socket
• Trim Tool Set
• Pliers
• Ratchet
• Socket Extensions
• Torque Wrench
• Anti-Seize Grease
• Bungee Cord
• Gloves
• Liquid Thread Locker
• Paper Towels
• Rust Penetrant
• Safety Glasses
• Transmission Fluid
• Bucket
• Floor Jack
• Jack Stands
• Hammer
• Punch
• Wheel Chocks

Tip: Always wear safety glasses and gloves to protect yourself while working on your vehicle.

Step 2: Prepare the Vehicle

1. Park your Mazda 3 on a flat surface.
2. Engage the parking brake and place wheel chocks behind the rear wheels.
3. Use a floor jack to lift the front of the vehicle and secure it on jack stands.

Step 3: Remove the Wheel

1. Use a 19mm socket and ratchet to remove the lug nuts from the front left wheel.
2. Take off the wheel and set it aside.

Step 4: Inspect and Remove the CV Axle

1. Locate the CV axle and the protective boot. Check for any signs of wear or damage.
2. Use a pry bar to remove any clips or fasteners securing the CV axle in place.
3. If the axle is stuck, apply rust penetrant to ease removal.
4. Remove the lower control arm bolt using a 21mm socket, allowing for easier access to the CV axle.

Step 5: Disconnect the CV Axle from the Transmission

1. Use a 32mm socket to remove the nut securing the CV axle to the transmission.
2. Carefully pull the CV axle out of the transmission. Be cautious of any fluid that may leak.

Step 6: Install the New CV Axle

1. Before installing the new CV axle, apply anti-seize grease to the splines.
2. Insert the new CV axle into the transmission, ensuring it seats properly.
3. Reinstall the securing nut and tighten it with a 32mm socket.

Step 7: Reattach the Lower Control Arm

1. Reattach the lower control arm and secure it with the bolt you removed earlier.
2. Tighten the bolt to the manufacturer’s specifications using a torque wrench.

Step 8: Reinstall the Wheel

1. Place the wheel back onto the hub and hand-tighten the lug nuts.
2. Lower the vehicle from the jack stands using the floor jack.
3. Tighten the lug nuts in a crisscross pattern to ensure even pressure.

Step 9: Final Checks

1. Start the vehicle and check for any unusual noises or issues.
2. Test drive the vehicle to ensure the CV axle is functioning properly.

Conclusion

Replacing the front left CV axle assembly on your Mazda 3 is a manageable task with the right tools and careful attention to detail. Always ensure safety measures are in place and follow the steps thoroughly. If you notice any issues during the installation, consult a professional mechanic. Enjoy a smoother ride with your new CV axle!