51541056021 SÜ Compressor Cylinder Liner

What does a compressor cylinder liner do?

This compressor cylinder liner serves as a critical component for restoring the internal cylinder surface where the piston travels within an air brake compressor. By providing a smooth, precise bore, it helps maintain the integrity of the compression chamber and prevents air leakage or pressure loss during operation. This component is engineered using heavy-duty grade materials to withstand the constant friction and thermal stresses found in heavy commercial vehicle air systems.

Compatible MAN vehicle models

This specific liner is designed for compatibility with MAN vehicles, including models such as SÜ 313, SÜ 363, SÜ 263, and SÜ 313. It ensures that the compressor maintains its original pressure-generating capacity without requiring a full unit replacement. This part is essential for maintaining the pneumatic performance of trucks and tractor units.

Installation and maintenance guidance

During installation, technicians should ensure that the cylinder bore is completely free of debris and that all sealing surfaces are inspected. Proper alignment and following the manufacturer's specified torque requirements during assembly are vital to prevent uneven wear on the new liner. Regular inspections of the liner surface can help identify early signs of wear before they lead to significant pressure loss.

Troubleshooting pressure loss

If air leakage or increased oil consumption is detected in the air system, replacing the liner is often the most efficient way to overhaul the compressor. This component helps restore the system to its required operational standards.

OE cross-reference

7000 104 300 (Compressor Cylinder Liner) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 51541056021.