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 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.
The O-ring K 70016 is a small but essential sealing element used with the oil pump K 71001 on the Sulzer ZV40/48 engine. Designed from heat- and oil-resistant elastomer, it prevents oil leakage at the pump joints and maintains system pressure under continuous operation. Although inexpensive, this O-ring plays an outsize role in avoiding contamination and preserving lubrication integrity — a quick visual check and timely replacement during scheduled maintenance will prevent costly oil loss and downstream damage.
The standalone impeller with code K 71029 is the heart of the Sulzer ZV40/48 oil pump, converting rotational motion into fluid movement. Its carefully profiled vanes generate the necessary flow rate and pressure to circulate oil through engine bearings and galleries. Forged from wear-resistant alloy, the impeller endures high centrifugal forces and abrasive particulates in the oil. Monitoring impeller condition and clearances helps maintain efficient lubrication and prevents cavitation or performance loss over time.
The integrated impeller and drive shaft unit bearing code K 71028 combines the rotating vane assembly and its driving connection into a single, precisely machined component. In the Sulzer ZV40/48’s oil pump, this design reduces alignment errors between shaft and vanes, ensuring smooth oil flow and consistent pressure build-up. Manufactured from hardened steel for high strength and wear resistance, the unit withstands the dynamic loads and high speeds of continuous engine operation, contributing directly to optimal lubrication performance.
The complete bearing cover assembly coded K 71022 safeguards the oil pump’s rotating elements by encasing the bearing in a sealed housing. In the Sulzer ZV40/48 engine, this cover ensures precise lubrication of the bearing and prevents contamination from entering the pump internals. Made from robust, corrosion-resistant materials, it maintains alignment and protects the bearing under continuous operation and thermal cycling. Regular inspection of the cover and its seals is vital to prevent oil loss and ensure the pump’s long-term reliability.
The gear wheel bearing code K 71030 is a precision-machined component that drives the oil pump in the Sulzer ZV40/48 diesel engine. Its accurately cut teeth mesh with the mating gear to generate the flow and pressure necessary for engine lubrication. Constructed from hardened, wear-resistant steel, the wheel endures heavy load and high rotational speeds, ensuring reliable oil delivery to critical bearings and seals. Regular inspection of the gear wheel for wear and clearances helps maintain optimal lubrication performance and prevents premature engine wear.
The pressure spring coded K 74135 provides the necessary preload within the fuel transfer pump of the Sulzer ZV40/48 engine, maintaining constant contact between moving parts and compensating for wear over time. Its calibrated tension ensures that valves and seals engage correctly, preserving consistent fuel pressure and preventing pulsation. Made from fatigue-resistant alloy, the spring withstands the high-cycle demands and thermal variations typical of continuous pump operation. Proper spring performance is critical to fuel system efficiency and engine responsiveness.
The support ring with code K 74131 is a key structural element in the fuel transfer pump of the Sulzer ZV40/48 engine. Positioned between the pump housing and mounting bracket, it ensures precise alignment and absorbs radial and axial loads generated during operation. By keeping the pump assembly firmly centered, this ring minimizes vibration and wear on internal components. Crafted from high-strength, corrosion-resistant material, it guarantees long-term stability and contributes to the smooth, reliable delivery of fuel under demanding marine or industrial conditions.