The lever identified as K 72130 is a control component designed for manual or mechanical operation of the 3-way flow control valve K 72105. Its role is to enable smooth directional changes of fluid flow—such as oil or cooling water—within the engine’s piping network. Precision-engineered for reliable operation and ease of use, this lever enhances system flexibility, allowing operators to manage flow routes efficiently during both normal operation and maintenance procedures.

The nipple with code number K 72320 is a specialized connector used in conjunction with the block-type ball cock K 72302 in the Sulzer ZV40/48 diesel engine. This component ensures a tight and secure fit between piping elements, facilitating precise flow control of fluids—typically fuel or lubricants—within the system. Built for durability and pressure resistance, it plays an essential role in maintaining the integrity of the engine’s fluid systems, particularly under high-load or variable operating conditions.

The main starting valve - TDI plays a critical role in the MAN L21/31 engine’s starting system by regulating the supply of compressed air to the engine’s cylinders during startup. This valve controls air flow with precision to ensure a smooth and reliable engine start, preventing damage and promoting longevity. Its reliable operation is essential for efficient engine ignition, especially in demanding marine and industrial applications.

The coupling flange is an essential connection part in the MAN L21/31 engine that joins the engine shaft to auxiliary equipment such as pumps or generators. This flange ensures secure mechanical linkage and alignment, enabling efficient power transmission and minimizing vibrations and mechanical stress. Its robust construction is vital for maintaining reliability in heavy-duty engine operations.

The cylinder liner is a fundamental component of the MAN L21/31 engine’s combustion chamber. It provides a durable, replaceable surface within the cylinder block where the piston operates, protecting the engine block from wear and heat damage. The liner’s precision engineering ensures optimal sealing and heat transfer, which are critical for maintaining engine efficiency, reducing friction, and extending the engine’s service life.

The coupling halves identified by code K 72120 form a mechanical link between the drive shaft and the geared pump in the Sulzer ZV40/48 engine. Designed to transmit torque smoothly and absorb minor misalignments, these coupling halves ensure reliable power transfer under high load and continuous use. Their precise fit and robust construction help maintain the integrity of the pump assembly, contributing to the overall reliability and efficiency of critical systems such as lubrication or fuel delivery.

The lever marked with code K 72127 is designed to interact with the flexible rod K 72135, providing mechanical advantage and precision movement within control or regulation systems of the ZV40/48 engine. It serves as a critical linkage point, translating linear or rotary force to drive auxiliary mechanisms such as lubrication or fuel regulation. Constructed for strength and precision, this lever plays a key role in ensuring responsive and consistent engine performance under varying operational loads.

The bush with code number K 73021 is a vital component within the cooling water pump assembly of the Sulzer ZV40/48 diesel engine. Acting as a guide and wear-resistant surface for the rotating shaft, this bush minimizes friction and helps ensure smooth operation of the pump. Made from durable, corrosion-resistant materials, it withstands continuous exposure to water and thermal cycles. Its reliability directly impacts the cooling efficiency and overall health of the engine, making it essential for long-term marine and industrial use.

The piston is a critical moving part in the MAN L21/31 engine responsible for transferring combustion force to the crankshaft via the connecting rod. Manufactured from durable materials to withstand extreme pressure and temperature, the piston plays a central role in the engine’s power generation and efficiency. Regular inspection and maintenance of pistons help prevent engine wear and sustain performance.

The complete cylinder unit is a fundamental assembly in the MAN L21/31 engine that houses the combustion chamber and associated components. This unit is engineered to withstand high pressure and temperatures while ensuring effective sealing and combustion efficiency. Proper maintenance of the cylinder unit is essential for optimal engine performance and longevity.