The leak pipe (K 70006) fitted to the fuel transfer pump K 74100 on the Adriadiesel/Jugoturbina/Zgoda/Sulzer ZV40/48 serves as a safety and housekeeping feature: it routes seepage, drips and relief flow away from the pump housing to a safe collection or return point, preventing fuel accumulation around hot or rotating parts. Built and routed to resist vibration and corrosion, the pipe helps operators detect leaks early, simplifies containment during service, and reduces fire and contamination risk — a small part that materially improves system safety and maintainability.
The engine pipes and connections group includes all the piping and fittings needed for the circulation of fuel, oil, coolant, and air in the MAN L21/31 engine. This network prevents leaks, maintains pressure, and secures reliable operation. Proper maintenance of pipes and connections is fundamental to efficient and safe engine performance.
The valve drive transfers motion from the camshaft to the engine’s intake and exhaust valves. This precise mechanism ensures timely valve operation, essential for optimal combustion and efficient engine breathing. A reliable valve drive supports engine efficiency, power, and long service life by maintaining accurate valve timing.
The casings for the charge air baffle and air inlet housing play a critical role in directing and managing airflow within the MAN L21/31 engine’s intake system. They ensure compressed air from the turbocharger is efficiently routed to the cylinders, minimizing turbulence and pressure losses. Properly designed casings improve combustion efficiency and overall engine performance by ensuring smooth air distribution.
The complete oil pump K 71001 is a critical subsystem of the Sulzer ZV40/48, supplying pressurized lubrication to bearings, camshafts and other moving parts. The unit typically includes the housing, impeller(s), drive shaft, bearings and seals, and is engineered for steady flow, low cavitation and long service intervals under heavy marine duty. Regular inspection of clearances, seals (like K 70016) and mounting integrity, plus using the correct oil grade, keeps the pump delivering reliable lubrication — the foundation of engine life and performance.
The multi-use O-ring K 70017 is specified to seal interfaces on several ZV40/48 components — typically the cooling/raw water pump (K 73100), a related assembly K 73000, and the fuel transfer pump K 74100. Built to resist both oil and seawater exposure as well as thermal cycling, this O-ring keeps diverse fluid circuits leak-free and preserves pressure integrity across systems. Because it services different assemblies, stocking this part simplifies logistics and helps technicians rapidly restore tight seals during troubleshooting or overhaul.