861 250 Compressor Cylinder Liner for Cummins Engines

What does a compressor cylinder liner do?

A compressor cylinder liner is a critical component within the pneumatic compression chamber of an air brake compressor. It provides the precise internal surface through which the piston travels, ensuring the necessary pressure is generated for the vehicle's braking system. When the liner experiences wear, it can lead to significant air leakage, pressure loss, and increased oil consumption within the compressor unit.

Compatible vehicles and engines

This cylinder liner is engineered for high-performance applications in heavy commercial vehicles including Ford Trucks, Peterbilt, Freightliner, and International. It is specifically designed to work with Cummins engine series such as ISF, ISB, ISC, and ISG12. Additionally, this part is fitted to various models from Foton, JAC, Kenworth, and Blue Bird buses. It is also compatible with systems from Knorr-Bremse and Bendix.

Installation and maintenance

For workshop technicians performing an overhaul, replacing a worn liner is a more efficient solution than replacing the entire compressor housing. During installation, it is vital to ensure the cylinder bore is clean and that all sealing components are properly seated to maintain an airtight integration. Regular inspection of the liner surface can prevent sudden pneumatic system failures.

Troubleshooting and selection

Maintaining proper lubrication and checking for air leaks during routine service ensures the longevity of this component. Selecting a high-strength replacement helps restore the compressor to its original operating dimensions.