3094155 Volvo N12 TD120 Replacement Compressor Ring

What does a compressor ring do?

This compressor ring plays a critical role in maintaining the internal pressure of the air brake compressor within the vehicle's pneumatic system. Engineered from high-strength components, it ensures a tight seal against the cylinder liner to prevent air leakage during the compression cycle.

Compatible vehicles and engines

This specific ring set is designed for use in Volvo N12 trucks equipped with TD120 engines. It is compatible with the heavy commercial vehicle air brake systems found in these models, providing a reliable solution for engine overhauls and maintenance tasks.

Installation and maintenance

For successful installation, technicians should verify that the ring thickness matches the piston groove height to prevent binding or excessive rattling. It is recommended to check the end-gap clearance according to the service manual and ensure the rings are installed in the correct sequence within the piston grooves.

Troubleshooting guide

Maintaining proper ring integrity is essential for consistent air pressure delivery in braking systems. If air leakage is detected within the compressor housing, inspecting these rings is a primary step in troubleshooting.

OE cross-reference

752 200 (Compressor Ring) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 3094155.