Importance and Problems Related To Piston Pin

Importance and Problems Related To Piston Pin Points : Importance and Problems Related To Piston Pin Piston pin, also called wrist pin allows the piston swing in the connection rod. It is a thermal fit in piston bosses in the modem engines. Knocking of the pin is a problem due to excessive clearance in the piston boss. Piston pins in modern engines are normally held in the piston by one or two means: snap rings or pressure fit, both are common.