Which pedal height corresponds to the throw-out bearing contacting the clutch brake in a non-synchronized Spicer double plate clutch?

Which pedal height corresponds to the throw-out bearing contacting the clutch brake in a non-synchronized Spicer double plate clutch?

• A. 2 inches
• B. 3 inches
• C. 4 inches
• D. 5 inches

Answer: (C)

Pedal travel determines when the throw-out bearing reaches and presses the clutch brake. In a non-synchronized Spicer double-plate clutch, the brake on the flywheel is designed to engage at a specific point so it can help slow the input shaft and smooth a gear change. That engagement happens at about four inches of pedal movement, which is why four inches is the correct match. Two inches or three inches of travel wouldn’t reach the brake, so there would be no braking action to assist during a shift. Five inches would push past the intended engagement point, which can cause excessive wear or an undesired dragging effect as the brake stays engaged beyond the proper range.

Pedal travel determines when the throw-out bearing reaches and presses the clutch brake. In a non-synchronized Spicer double-plate clutch, the brake on the flywheel is designed to engage at a specific point so it can help slow the input shaft and smooth a gear change. That engagement happens at about four inches of pedal movement, which is why four inches is the correct match.

Two inches or three inches of travel wouldn’t reach the brake, so there would be no braking action to assist during a shift. Five inches would push past the intended engagement point, which can cause excessive wear or an undesired dragging effect as the brake stays engaged beyond the proper range.