What should be examined on the upper coupler plate during inspection?

During the inspection of the upper coupler plate, the presence of gouges and blockage of drain holes is crucial. The upper coupler plate plays a significant role in the structural integrity and functionality of the chassis. Gouges can indicate potential damage that could compromise strength or lead to failure during operation. Furthermore, blockage of drain holes is critical because these holes are designed to allow water and debris to escape, preventing corrosion and maintaining the overall condition of the chassis. Keeping these holes clear is essential for ensuring that the chassis remains safe and functional over time. Thus, examining for gouges and ensuring that drain holes are unobstructed is vital for effective maintenance and safety protocols.