The flange K 28030 is a robust structural and mounting component designed for integration with the auxiliary rocker arm K 28015 in the Sulzer ZV40/48 engine. It provides a secure interface for positioning and fastening the rocker arm assembly within the engine structure, ensuring precise alignment and stable operation under dynamic loads. Manufactured from high-strength materials and engineered to withstand vibration, thermal expansion, and mechanical stress, the flange maintains its structural integrity over prolonged service periods. Its precision-machined surfaces ensure proper seating and load transfer, contributing to the overall rigidity and reliability of the assembly. By supporting accurate installation and stable operation, the K 28030 flange plays an essential role in maintaining consistent valve actuation and engine performance.

The spacer sleeve K 28028 is a precision positioning component used within the auxiliary rocker arm assembly K 28015 in the Sulzer ZV40/48 engine. Its primary function is to maintain correct axial spacing and alignment between moving parts, preventing unwanted lateral displacement and ensuring consistent geometry of the valve actuation mechanism. Operating under cyclic loads, vibration, and temperature fluctuations, the spacer sleeve is manufactured from high-strength, wear-resistant materials to ensure long-term dimensional stability. Its precise machining guarantees accurate fit and uniform load distribution, minimizing stress concentrations on adjacent components. By preserving alignment and reducing mechanical wear, the K 28028 spacer sleeve contributes to smooth operation, extended service life, and reliable valve train performance.

The extractor for fuel valve, code 217891, is a specialized service tool designed for the safe and efficient removal of fuel injection valves from the MAN L21/31 engine. Engineered to apply controlled extraction force without damaging surrounding components, it allows technicians to remove tightly fitted valves quickly and securely, even after prolonged operation. Its robust construction and precise interface geometry ensure reliable engagement with the valve assembly, minimizing the risk of deformation or wear during maintenance procedures. By facilitating efficient servicing and reducing downtime, this extractor plays an important role in maintaining fuel system performance, operational safety, and overall engine reliability.

The grinding wheel, code 100100, is a precision tool used in maintenance and reconditioning processes associated with MAN L21/31 engine components. Designed for accurate material removal and surface finishing, it enables the restoration of critical parts such as valve seats, shafts, or sealing surfaces to their required tolerances and surface quality. Manufactured from high-performance abrasive materials bonded for durability and consistent cutting action, the grinding wheel delivers reliable performance under controlled machining conditions. Its role in achieving precise geometries and smooth finishes is essential for ensuring proper component function, extending service life, and maintaining the overall performance of the engine.

The feather key, code 100100, is a fundamental mechanical element used in the MAN L21/31 engine to transmit torque between a shaft and a mounted component such as a gear, coupling, or pulley. Precisely machined to fit into matching keyways, it ensures secure alignment while allowing controlled axial movement when required. Manufactured from high-strength, wear-resistant materials, the feather key is designed to withstand repeated load cycles, vibration, and thermal influences without loss of integrity. Its simple yet critical function supports reliable power transmission, protects mating components from slippage, and contributes to the overall efficiency and durability of the engine’s drive systems.

The spacer sleeve K 28027 is a precision positioning component used with the main rocker arm K 28005 in the Sulzer ZV40/48 engine, designed to maintain correct axial spacing and alignment within the rocker assembly. It ensures that the rocker arm operates within defined tolerances, preventing lateral movement and maintaining proper geometry of the valve actuation mechanism. Manufactured from durable materials with high dimensional accuracy, the spacer sleeve withstands mechanical loads, vibration, and thermal influences without deformation. By preserving alignment and reducing mechanical stress on adjacent components, the K 28027 spacer sleeve contributes to smooth operation, reduced wear, and enhanced reliability of the engine’s valve train system.

The shaft K 28026 is a critical structural and load-bearing component that serves as the pivot axis for the auxiliary rocker arm K 28015 in the Sulzer ZV40/48 engine. Designed to support continuous oscillating motion and transmit mechanical loads, it ensures stable and precise operation of the rocker arm assembly. Manufactured from high-strength, wear-resistant materials and machined to tight tolerances, this shaft provides excellent dimensional stability and resistance to fatigue. It operates under conditions of vibration, thermal expansion, and repetitive loading, maintaining alignment and minimizing deformation. By providing a reliable rotational axis, the K 28026 shaft plays a key role in ensuring consistent valve timing and long-term durability of the valve train system.

The bush K 28018 is a precision-engineered bearing element designed for installation within the auxiliary rocker arm K 28015 in the Sulzer ZV40/48 engine. Its primary function is to provide a low-friction interface between the rocker arm and its supporting shaft, ensuring smooth oscillating motion under continuous mechanical load. Manufactured from high-quality bearing material with optimized lubrication properties, this bush reduces wear, absorbs vibration, and maintains accurate alignment during operation. Engineered to withstand cyclic stresses and temperature variations, it ensures long service life and stable performance. By supporting reliable movement of the auxiliary rocker mechanism, the K 28018 bush contributes to precise valve actuation and overall engine efficiency.

The ball bearing, code 178920, is a fundamental mechanical component designed to support rotating shafts and reduce friction within the MAN L21/31 engine. By enabling smooth rotational motion and minimizing energy losses, it enhances mechanical efficiency and operational stability across various engine subsystems. Manufactured with high precision from hardened, wear-resistant materials, the bearing is capable of withstanding significant radial and axial loads, as well as continuous vibration and temperature fluctuations. Its reliable performance ensures long service life, reduces maintenance needs, and plays a vital role in maintaining the smooth, efficient, and dependable operation of the engine.

The thrust piece, code 300100, is a precision component designed to absorb axial forces and maintain proper alignment of rotating or moving parts within the MAN L21/31 engine. By distributing loads evenly and reducing localized stress, it helps prevent excessive wear and ensures stable operation under varying mechanical and thermal conditions. Engineered from high-strength, wear-resistant materials and manufactured to tight tolerances, the thrust piece delivers consistent performance over extended service intervals. Its critical role in controlling axial movement supports the protection of key assemblies, preserves dimensional accuracy, and contributes to the overall durability and efficiency of the engine.