What is required to check and adjust rolling torque during countershaft installation?

To check and adjust rolling torque during countershaft installation, assessing bearing preload is essential because it directly impacts the effectiveness of the bearings and the overall performance of the transmission system. Proper bearing preload ensures that there is adequate contact between the roller elements and the raceways, reducing backlash and maintaining the correct alignment of the gears. If the preload is too high or too low, it can lead to excessive wear, overheating, and potential failure of the bearings, which could compromise the entire drivetrain's efficiency and longevity.

While other options involve critical components of the installation process, they do not directly relate to setting the rolling torque specifically. For instance, positioning clutch components, measuring gear clearance, and aligning auxiliary drive gear each serve important roles in ensuring the proper functionality of the transmission but do not specifically involve the adjustment of rolling torque related to the countershaft.