3948846 Cummins Compatible Single Cylinder Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a critical component in the pneumatic system of heavy commercial vehicles. It functions by compressing intake air to supply the air processing unit and storage tanks, ensuring the necessary pressure for reliable braking performance. Built with high-strength components, it is designed to withstand intense thermal and mechanical stress during operation.

Compatibility and technical specifications

This specific model is compatible with Cummins engines. It features a water-cooled design to prevent overheating during continuous heavy-duty use and includes an ESS feature for optimized performance. The unit utilizes a single-piston configuration with a Ø85.00 mm bore and 56 mm stroke to achieve a swept volume of 318cm³.

Installation and maintenance guidance

For proper installation, ensure the water inlet and outlet ports (3/4" - 16 UNF) are correctly connected to the engine cooling circuit. The unit features an M27x2 air outlet port and an M10x1 unloader port. Technicians should regularly inspect the water-cooled valve plate and connections to maintain optimal pressure levels.

System reliability and troubleshooting

Regular maintenance of the compressor ensures stable air pressure throughout the braking system. When replacing, verify that the through drive configuration matches the engine requirements to prevent drive belt or gear failure.

OE cross-reference

2500 030 002 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3948846.