26 13 20 Cylinder Head for Air Brake Compressors

What does a compressor cylinder head do?

This compressor cylinder head acts as the essential cast component that seals the top of the air brake compressor cylinder block. It serves to contain the high-pressure compression chamber and provides the necessary seating for both inlet and discharge valves. By maintaining a tight seal, this component prevents air leaks and facilitates the efficient routing of compressed air through the discharge port while managing thermal loads during operation.

Vehicle and engine compatibility

This part is specifically engineered for heavy commercial vehicles, including models from Western Star such as the 4700, 4900, and 5700XE. It is also fitted to Freightliner trucks like the Cascadia, Columbia, and Coronado. These units are primarily designed to support Detroit Diesel engines including the DD13, DD15, and DD16 series. It is also used in other heavy vehicles such as Mercedes-Benz.

Installation and maintenance guidance

When performing installation, technicians should ensure that all sealing surfaces are perfectly clean to prevent leaks. Given that torque values are critical for maintaining a proper seal against the cylinder block, always refer to the specific service manual for exact specifications. Proper alignment of bolt holes and unloader ports is essential for maintaining optimal air output and system pressure.

Troubleshooting and inspection

Regular inspection of the cylinder head can help prevent system failures. Checking for signs of surface wear or unevenness on the sealing face can prevent gasket leaks before they cause significant air system pressure drops.