The self-locking nut K 31026 is engineered to provide secure fastening even under conditions of vibration and thermal cycling. Used in the mounting of components K 31024 and K 31520, this nut ensures the reliability of threaded joints, reducing the risk of loosening during operation.
The spring plate with code number K 31027 is a crucial mechanical element used to ensure proper tension and load distribution between components K 31024 and K 31520. It helps stabilize the assembly and absorb shocks, which is especially important in high-vibration environments such as large diesel engines.
The PS (power supply or pump set) for the hydraulic tie rod, code 0743814-5.0, is a specialized system that provides the required hydraulic pressure to operate the tie rod mechanism in the MAN L21/31 engine. Hydraulic tie rods ensure uniform pre-tensioning of cylinder heads, promoting even load distribution and structural stability. The power supply unit is vital for maintaining the precision and reliability of the hydraulic tightening process, especially during engine installation or overhaul.
The tightening instruction document, code 11.00160-0152-1.K, is an essential reference for proper torque application on the MAN L21/31 engine. This technical guide specifies torque values, sequences, and procedures for securing bolts, nuts, and other fasteners across engine components. Adhering to these instructions is vital for preventing uneven loads, avoiding mechanical failure, and ensuring optimal sealing and performance during assembly or maintenance.
The cylinder crankcase, code 11.01200-3593-1.H, is a core structural component of the MAN L21/31 engine, housing and supporting key moving parts such as the crankshaft and cylinders. Built to withstand internal pressures and mechanical stress, the crankcase ensures precise alignment and rigid support for all rotating assemblies. Its robust cast design plays a crucial role in the engine's strength, vibration dampening, and overall operational integrity, especially under continuous marine or power generation workloads.
The drive shaft with code K 32321 is a key transmission component that transfers torque to the vertical worm gear in the Sulzer ZV40/48 engine. This shaft must withstand high torsional loads and deliver consistent power with minimal backlash. Crafted from robust materials and manufactured with high precision, it ensures reliable operation of the worm gear mechanism, which may be part of engine barring or auxiliary drive systems. Its performance directly impacts the efficiency and durability of critical drivetrain assemblies.