15 17 11 Compressor Cylinder Head Replacement

What does a compressor cylinder head do?

A compressor cylinder head is the cast service component that sits on top of an air brake compressor's cylinder block and seals the compression chamber from above. This part allows a workshop technician to rebuild a compressor in place rather than replacing the entire unit. In the field, it is also frequently referred to as the compressor cover, top cover, or cylinder cover.

Compressor head architectures

The design of these heads varies according to the compressor architecture, including single-cylinder, twin-cylinder, air-cooled, or water-cooled configurations. Some versions include an unloader port to receive governor signals, while others are supplied alongside valve plate kits. These components are vital for maintaining stable air pressure and managing heat during high-load operation.

Installation and maintenance

When performing maintenance or repairs, it is essential to match the head to the specific compressor architecture and cooling type. Technicians should verify if the required part is a standalone head or if it comes integrated with gaskets or valve plates to ensure a proper seal within the pneumatic system.

Selection guidance

Proper selection ensures the internal air passages and valve seats function correctly, preventing leaks and maintaining consistent pressure delivery. Consult your authorized distributor for precise application details.