The standard tools for normal maintenance, code P52000-24, form a comprehensive toolkit specifically selected for routine servicing of the MAN L21/31 engine. This set includes all essential tools required for regular inspections, adjustments, and basic maintenance tasks, enabling safe and efficient work directly on site. Designed to match MAN’s technical specifications, these tools ensure correct handling of engine components, reduce the risk of improper servicing, and support reliable day-to-day operation in marine and power generation applications.
The bush K 73112 is a precision bearing sleeve designed for installation in bearing housing K 73111 within the ZV40/48 raw water pump assembly. Its function is to provide a low-friction, wear-resistant support surface for the rotating shaft, ensuring correct alignment and smooth operation. Manufactured from materials optimized for lubrication retention and resistance to corrosion and mechanical stress, this bush reduces shaft wear and extends bearing service life. As a small but essential component, K 73112 contributes significantly to vibration control, operational stability, and the overall durability of the pump assembly.
The gear wheel K 73124 is a robust power-transmission component used in the drive mechanism of the ZV40/48 raw water pump. Engineered for precise meshing and efficient torque transfer, this gear wheel ensures synchronized operation between the drive shaft and the pump assembly. Its hardened tooth profile and dimensional accuracy reduce noise, vibration, and mechanical losses while enhancing durability under continuous operation. By maintaining consistent pump speed and load distribution, K 73124 contributes directly to dependable cooling water circulation and long-term reliability of the pump system.
The shaft K 73123 is a precision-machined drive component of the raw water pump in the Sulzer/Adriadiesel/Jugoturbina/Zgoda ZV40/48 engine, responsible for transmitting rotational power from the drive system to the pump impeller. Designed to operate under continuous load, vibration, and exposure to seawater-side conditions, the shaft ensures accurate alignment and smooth torque transfer. Manufactured from high-strength, corrosion-resistant material, K 73123 minimizes wear on bearings and seals, supports stable pump performance, and plays a key role in maintaining reliable engine cooling under demanding marine and industrial operating conditions.
The flexible hose with code P51912-01 is an essential connection component in the MAN L21/31 engine, used for the safe transport of fluids or air between engine systems. Engineered to absorb vibration, movement, and thermal expansion, this hose prevents stress transmission to rigid pipes and fittings. Its reinforced construction ensures resistance to pressure, temperature extremes, and harsh operating environments, contributing to improved system reliability, easier installation, and reduced risk of leaks in marine propulsion and stationary power applications.
The expansion bellow, code P51914-01, serves as a flexible element within the MAN L21/31 engine systems, allowing controlled movement while maintaining tightness in pipelines or exhaust connections. Designed to withstand high temperatures, pressure variations, and continuous vibration, the bellow effectively compensates for thermal growth and alignment deviations. By minimizing mechanical stress on surrounding components, the expansion bellow enhances system durability, reduces maintenance requirements, and ensures stable performance under high-load marine and industrial operating conditions.
The expansion joint with code P51913-01 is a critical component in the MAN L21/31 engine’s piping and exhaust systems, designed to compensate for thermal expansion and mechanical movement during operation. By absorbing axial, lateral, and angular displacements, the expansion joint protects rigid pipes and connected equipment from excessive stress, fatigue, and cracking caused by temperature fluctuations and vibration. Its robust, flexible construction ensures long-term reliability, reduces structural loads, and supports safe and efficient engine operation in demanding marine and power generation environments.
The raw water pump cover K 73118 is a precision-engineered closure component that seals the pump casing while allowing access for inspection and maintenance of the impeller and internal parts. Designed to maintain uniform pressure distribution and reliable sealing, this cover prevents water leakage and protects the pump interior from external contamination. Manufactured for durability and corrosion resistance, K 73118 supports easy servicing and contributes to the overall efficiency, safety, and long service life of the raw water pump system in ZV40/48 engines.
The complete raw water pump casing K 73102 forms the structural and hydraulic core of the cooling water pump assembly in the ZV40/48 engine. Designed to house and precisely align the impeller, shaft, and sealing components, this casing ensures efficient water flow with minimal losses and high operational stability. Built to withstand corrosion, pressure fluctuations, and continuous operation, its robust construction protects internal components and maintains long-term dimensional integrity. As a fully assembled unit, K 73102 plays a key role in ensuring dependable raw water circulation and effective engine cooling.
The impeller K 73106 is a critical rotating component of the raw water pump in the Sulzer/Adriadiesel/Jugoturbina/Zgoda ZV40/48 engine, responsible for generating the flow needed to circulate cooling seawater through the engine’s heat exchange system. Precision-machined for optimal hydraulic efficiency, the impeller ensures consistent water delivery even under varying engine loads. Manufactured from corrosion-resistant materials to withstand continuous exposure to seawater and mechanical stress, K 73106 supports stable engine temperatures, prevents overheating, and contributes directly to the reliability and longevity of the cooling system in demanding marine and industrial environments.