How to Replace Accessory Drive Belt Tensioner 2006-2011 Honda Civic

Introduction

This tutorial will guide you through the process of replacing the accessory drive belt tensioner on a 2006-2011 Honda Civic. The tensioner is crucial for maintaining the correct tension on the serpentine belt, preventing issues like squeaking or slipping. Following these steps will help ensure your vehicle runs smoothly.

Step 1: Gather Your Tools

Before starting the replacement, make sure you have the following tools on hand:

• Pocket Screwdriver
• Pry Bar
• 12mm Wrench
• 19mm Wrench
• 10mm Socket
• Torque Wrench
• Gloves
• Safety Glasses
• 5/16 Inch Allen Wrench
• Pick

Step 2: Prepare Your Vehicle

1. Safety First: Ensure the vehicle is parked on a stable surface and the engine is off. Wear safety glasses and gloves to protect yourself.
2. Disconnect the Battery: Remove the negative terminal from the battery to avoid any electrical issues while working on the vehicle.

Step 3: Access the Tensioner

1. Remove the Engine Cover: If your model has an engine cover, use the appropriate tools to take it off.
2. Locate the Tensioner: Find the accessory drive belt tensioner on the engine. It is typically located near the front of the engine, attached to the serpentine belt.

Step 4: Release Tension from the Belt

1. Use the Wrench: Place the 19mm wrench on the tensioner bolt.
2. Rotate the Tensioner: Carefully rotate the tensioner counterclockwise to release tension from the belt.
3. Remove the Belt: Once the tension is released, slide the serpentine belt off the tensioner pulley and set it aside.

Step 5: Remove the Old Tensioner

1. Unscrew the Tensioner: Use the 12mm wrench to remove the bolts securing the tensioner to the engine.
2. Take Out the Tensioner: Carefully pull the tensioner away from its mount and set it aside.

Step 6: Install the New Tensioner

1. Position the New Tensioner: Place the new tensioner in position where the old one was removed.
2. Secure the Tensioner: Use the 12mm wrench to tighten the bolts, ensuring the tensioner is securely in place.

Step 7: Reinstall the Serpentine Belt

1. Route the Belt: Refer to the belt routing diagram (usually found under the hood) to correctly route the belt around the pulleys.
2. Reapply Tension: Rotate the tensioner counterclockwise again and slide the belt back onto the tensioner pulley.
3. Release the Tensioner: Let go of the tensioner to apply tension to the belt.

Step 8: Final Checks

1. Inspect the Installation: Make sure the belt is properly seated on all pulleys and the tensioner is functioning correctly.
2. Reconnect the Battery: Reattach the negative terminal to the battery.

Conclusion

You have successfully replaced the accessory drive belt tensioner on your Honda Civic. Regular maintenance of the tensioner and serpentine belt is essential for vehicle performance. If you notice any unusual noises or issues in the future, consider checking the tensioner again. For further guidance or assistance, feel free to consult a professional mechanic.