The nut coded K 27209 is a small but essential fastening element in the fuel injection system of the ZV40/48 diesel engine. Specifically designed to secure the fuel injection valve in place, this nut ensures a tight and stable connection capable of withstanding extreme pressure and vibration during engine operation. Made from high-grade, corrosion-resistant steel, it maintains the structural integrity of the fuel delivery system and plays a critical role in preserving injection precision, combustion efficiency, and long-term engine reliability.
The spring identified by code K 27210 is a precision-calibrated component that regulates the opening pressure of the fuel injection valve in the ZV40/48 diesel engine. This spring is responsible for ensuring that fuel is injected into the combustion chamber at the exact moment and pressure required for optimal combustion. Its tension characteristics must remain consistent over thousands of cycles, resisting fatigue and deformation. As a vital part of the fuel system, this spring contributes directly to combustion efficiency, power output, and emission control.
The self-locking nut, code number K 27417, is specially designed for secure fastening of the spindle (K 27401) in the starting valve system of the ZV40/48 engine. Its self-locking feature prevents loosening due to vibrations or pressure fluctuations, thus maintaining the correct positioning and alignment of the starting valve. Made from high-grade materials with anti-corrosive properties, this nut plays a critical safety role, ensuring the reliability of engine starts over prolonged operational cycles.
The complete inlet valve, coded K 27500, is a fundamental component of the air intake system in the ZV40/48 diesel engine. This valve governs the flow of fresh air into the combustion chamber, opening at precisely timed intervals to ensure optimal fuel-air mixture and efficient combustion. Built to endure extreme thermal and mechanical stress, the complete assembly includes the valve spindle, guide, springs, and seating surfaces. Its flawless operation is key to maintaining engine power, fuel efficiency, and smooth running under both marine and industrial load conditions.
The piston ring coded K 27410 is designed specifically for the starting valve assembly, particularly for part K 27404. It provides a tight seal between the piston and valve housing, preventing air leakage during pressurized starts. Manufactured from high-performance materials, this ring resists deformation, wear, and thermal cycling. Its effectiveness is critical to maintaining the efficiency and responsiveness of the engine's pneumatic starting system.
The housing with code number K 27402 serves as the structural body of the starting valve in the ZV40/48 diesel engine. It encases the spindle and related internal components, providing robust protection and alignment. Built from corrosion- and pressure-resistant materials, this housing ensures the valve operates safely and efficiently under high-pressure air injection. Its design supports quick servicing and dependable engine starts even in harsh marine environments.
The spindle coded K 27401 is a key moving component of the starting valve in the ZV40/48 diesel engine. It functions as the actuator that enables or blocks compressed air flow to the cylinders during engine start-up. Engineered for high precision and durability, the spindle must operate flawlessly under sudden pressure changes and high thermal conditions. Its role is essential for reliable engine ignition and smooth transition to full operation.
The cover with splash tube, code 11.01213-0057-1.0, is an integrated component designed to direct lubricating oil inside the MAN L21/31 engine. It prevents uncontrolled splashing, reduces oil loss, and ensures targeted lubrication of internal parts such as bearings and gears. This component plays a crucial role in maintaining oil cleanliness, reducing wear, and supporting smooth engine operation in demanding conditions at sea or in power plants.
The lower spring plate, identified by code K 27502, is an essential support element for the inlet valve spring assembly in the ZV40/48 engine. It provides a stable base that maintains the correct spring tension, ensuring consistent valve timing and proper seating. This component must endure repeated cycles of compression and rebound, and it is built from durable materials to resist fatigue. Its role is crucial in ensuring that the inlet valve operates efficiently, helping the engine achieve optimal air intake and combustion performance.
The valve turning device with code K 27527 plays a critical role in prolonging the life of the exhaust valve in the ZV40/48 engine. By gradually rotating the valve during operation, this device distributes thermal and mechanical loads evenly across the valve face and seat, reducing localized wear and preventing carbon buildup. This results in better sealing, improved engine breathing, and extended service intervals, making it a vital element in maintaining reliable exhaust valve function over time.