Repair Guide: How to Solve the Intermediate Shaft Bearing Failure on Your 1999 Porsche 911

Repair Guide of Porsche 911 (1999): IMS Bearing Failure

Repair Guide: How to Solve the Intermediate Shaft Bearing Failure on Your 1999 Porsche 911

Issue

The 1999 Porsche 911 vehicles are known for the potential failure of the intermediate shaft (IMS) bearing, which can cause severe engine damage if not addressed correctly. Although this problem is not as common as the usual wear and tear, it is critical to know how to fix it.

Tools Required

Steps to Fix IMS Bearing Failure

1. Locate the IMS bearing

On a 1999 Porsche 911, the IMS bearing is located inside the engine, at the back of the crank case. Accessing it necessitates removal of the transmission and clutch assembly. Begin by disconnecting the battery.

2. Remove the transmission

Use your set of metric wrenches to remove the bolts holding the transmission assembly to the engine. You will need to use the engine crane to support the engine once the transmission assembly has been removed.

3. Remove the clutch assembly

Next, remove the clutch pressure plate and the clutch disc before the IMS cover can be reached.

4. Extracting the failed IMS

Use a suitable wrench to extract the failed IMS bearing. Be careful to not drop any debris into the engine, as this can cause severe damage. Use a vacuum to clean up any debris.

5. Install the new IMS Bearing

Apply a small amount of LocTite 574 to the outside of the new bearing, then install it carefully using the tools provided in your IMS Retrofit Kit. Make sure the bearing is seated properly in the engine case.

Key Points to Remember:

Conclusion:

When done right, replacing the IMS bearing can restore your 1999 Porsche 911 to a stable running condition. It requires a significant amount of work, but you can save a considerable cost by doing it yourself. Remember to always double-check your work before putting everything back together.