Which adjustment is performed as the third step in setting a double disc angle spring clutch?

Setting a double disc angle spring clutch involves several steps to ensure proper function and performance. The third step in this process is adjusting the upper pedal stop.

The upper pedal stop is crucial because it defines the maximum height of the clutch pedal when fully released. Adjusting this stop helps to ensure that there is adequate free play in the clutch pedal, allowing for proper engagement and disengagement of the clutch discs. If the upper pedal stop is not set correctly, it can lead to issues such as clutch dragging or insufficient engagement, which can cause difficulty in shifting gears or even premature wear of clutch components.

In the context of the other adjustments: the clutch brake is typically addressed earlier in the adjustment sequence, as it ensures smooth gear engagement by preventing the gearbox from rotating when the clutch is disengaged. Linkage length is also an initial consideration to ensure that the pedal is adequately linked to the clutch mechanism. Measuring and setting shaft endplay is usually one of the final adjustments to ensure the components are correctly aligned and within operational tolerances after the primary settings have been established.

Thus, adjusting the upper pedal stop as the third step is essential for achieving the desired clutch performance and longevity.