What can be a consequence of runout due to excessive flywheel face turnout?

The consequence of excessive flywheel face turnout leading to runout primarily results in clutch slippage and shifting difficulties. When a flywheel has excessive runout, it means that the surface is not perfectly flat or aligned, which can create uneven contact between the flywheel and the clutch disc. This unevenness can prevent the clutch from fully engaging, leading to slippage where the clutch does not effectively transfer power from the engine to the transmission.

Additionally, this misalignment can cause difficulties during gear shifting as the component dynamics are altered by the faulty engagement of the clutch. Proper clutch operation is essential for smooth shifting and overall drivetrain functionality.

Understanding these impacts highlights the importance of maintaining the flywheel and ensuring proper machining so that runout is minimized, ensuring efficient and smooth operation of the vehicle's transmission system.