When replacing a clutch, which component can often be resurfaced?

• A. Clutch disc
• B. Flywheel
• C. Release bearing
• D. Pressure plate

Answer: (B)

When replacing a clutch, the mating surface between the engine and the clutch needs to be perfectly flat and clean to transfer power smoothly and prevent slip. The flywheel provides that large, stationary friction surface for the clutch disc and is the component that can be resurfaced to restore a smooth, true surface if it has glazing, hot spots, or minor grooves from use. Machining the flywheel removes imperfections and brings it back to the correct finish and thickness spec, ensuring proper engagement and longevity of the new clutch.

The clutch disc itself carries the friction material that wears and is usually replaced rather than resurfaced, since removing material would reduce its ability to grip and alter its dimensions. The release bearing is a bearing, not a friction surface to be machined. The pressure plate has a friction surface too, but resurfacing it is not common practice because it can affect clamp load and spring pressure and is generally replaced if not within spec.