BMW E90 3-Series Driveshaft Bearing Replacement for 325i, 325Xi, 330i, 330xi, 328i, 335i

Introduction

This tutorial will guide you through the process of replacing the driveshaft center bearing on BMW E90 models, including the 325i, 328i, 330i, and 335i. If you're experiencing vibrations in your driveline after replacing the flex-disc, it's time to inspect and possibly replace the center bearing. This repair may take most of your day, so ensure you have the necessary tools and parts before starting.

Step 1: Gather Tools and Parts

Before you begin, make sure you have the following tools and parts ready:

Tools Required

• Prybar
• 3-jaw puller
• Hammer or press
• E12 and 13mm sockets

Parts Required

• Driveshaft halves of the center bearing

Hot Tip

For easier access and better working conditions, remove the driveshaft from the vehicle.

Step 2: Prepare the Vehicle

1. Lift the Vehicle: Use a jack to lift the rear of the vehicle and secure it with jack stands.
2. Remove Underbody Panels: If applicable, take off any underbody panels that may obstruct access to the driveshaft.

Step 3: Disconnect the Driveshaft

1. Locate the Flex-Disc: Identify the driveshaft flex-disc at the rear of the driveshaft.
2. Remove the Bolts: Use the E12 socket to remove the bolts securing the flex-disc.
3. Disconnect the Front Section: If necessary, disconnect the front section of the driveshaft from the transmission using the 13mm socket.

Step 4: Remove the Center Bearing

1. Identify the Center Bearing: Locate the center bearing in the middle of the driveshaft.
2. Use the 3-Jaw Puller: Attach the 3-jaw puller to remove the center bearing. Ensure it's securely positioned to avoid slipping.
3. Gently Tap or Press: If the bearing is stuck, gently tap it with a hammer or use a press for easier removal.

Step 5: Inspect the New Center Bearing

1. Check for Play: Ensure that the new center bearing spins smoothly without excessive play.
2. Compare with Old Bearing: Place the new bearing next to the old one to verify proper fitment.

Step 6: Install the New Center Bearing

1. Position the New Bearing: Slide the new center bearing onto the driveshaft.
2. Secure the Bearing: Use the puller to press the new bearing into place, ensuring it is firmly seated.

Step 7: Reconnect the Driveshaft

1. Align the Driveshaft: Position the driveshaft back into its original place.
2. Reattach the Flex-Disc: Use the E12 socket to reattach the bolts to the flex-disc securely.
3. Connect to the Transmission: Reconnect the front section of the driveshaft to the transmission and tighten with the 13mm socket.

Conclusion

Replacing the driveshaft center bearing on a BMW E90 can enhance your vehicle's driveline performance. Ensure all bolts are tightened properly and that everything is secured before lowering the vehicle. After completing the repair, take your car for a test drive to confirm the issue has been resolved. For a more comprehensive improvement, consider also replacing the driveshaft flex-disc.