Regularly checking and replacing belts in Sulzer diesel engines is crucial for maintaining optimal performance and preventing unexpected breakdowns. These belts are integral to the operation of auxiliary systems such as the alternator, water pump, and air conditioning, which are essential for the engine's overall functionality. By frequently inspecting and replacing worn or damaged belts, operators can prevent them from breaking, thus avoiding costly repairs and downtime. This proactive maintenance practice ensures the smooth and efficient operation of the engine, enhancing its reliability and longevity in demanding maritime and industrial applications.