The Sulzer engine Z40/48 is renowned for its reliability and efficiency, but like any complex mechanical system, it requires regular maintenance. One of the key components that may need repair or replacement is the crankshaft. For the Z40/48 model, the crankshaft comes in two variants: complete (K 31000) and individual (K 31001). The complete crankshaft (Crankshaft, complete; Коленчатый вал, в сборе; Kurbelwelle, komplett) allows for a full replacement, which can be more efficient in the case of severe damage. The individual crankshaft (Crankshaft; Коленчатый вал; Kurbelwelle) offers the option to replace only critical parts, thereby reducing costs and repair time. Regardless of the chosen option, proper maintenance of the crankshaft is crucial for the longevity and optimal performance of the Sulzer engine Z40/48.