4952756 N14 Single Cylinder Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a critical component within the pneumatic braking system of heavy commercial vehicles. By utilizing a high-strength piston-type design, it compresses intake air to provide the necessary pressure for the air processing unit and storage tanks. This specific model is engineered with a water-cooled design to maintain optimal operating temperatures during sustained heavy-duty service.

Engine compatibility and technical specifications

This component is compatible with Cummins engines, specifically designed for N14, M11, ISM, and QSM11 series. It features a Ø85.00 mm cylinder bore, a 56 mm stroke, and a swept volume of 318cm³. The unit includes an ESS feature and is built with a water-cooled valve plate to ensure long-term reliability under high pressure.

Installation and maintenance guidance

For proper installation, technicians should verify the connection to the engine cooling circuit via the 3/4" - 16 UNF water inlet and outlet ports. Ensure all connections for the M27x2 air outlet and M10x1 unloader port are secure to prevent pressure leaks. Regular inspection of the water cooling lines is recommended to maintain peak performance.

Troubleshooting and system performance

Maintaining consistent air pressure is vital for vehicle safety; any drop in system pressure may indicate that this compressor requires inspection or replacement.

OE cross-reference

2500 030 003 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 4952756.