301.05.0001 Volvo Compatible Compressor Governor Valve

What does a compressor governor valve do?

This compressor governor valve plays a critical role in the pneumatic braking system by regulating the air pressure generated by the compressor. It ensures that the air brake system operates within safe parameters by controlling when the compressor loads and unloads. By maintaining stable pressure, this component helps ensure consistent braking performance and protects the pneumatic system from over-pressurization.

Compatible Volvo models and engines

This part is specifically designed to fit various Volvo truck models including the F10, F12, FL series, NL series, and B series engines such as TD102, TD122, D10A, and D12A. It is compatible with Knorr-Bremse systems found in these heavy commercial vehicle applications.

Installation and maintenance

Technicians should verify the M10x1 port size and the 12 BAR pressure rating before installation to ensure correct system calibration. Regular inspection of the valve during compressor maintenance intervals can help prevent air leaks and pressure fluctuations in the braking circuit. Check the compatibility list to confirm fitment for your specific engine configuration.

Troubleshooting guidance

When troubleshooting air pressure issues, ensure that the governor valve is not obstructed or leaking. Replacing a malfunctioning valve can restore proper compressor cycling and prevent premature wear on other pneumatic components within the braking system.

OE cross-reference

301.05.0001 (Compressor Governor Valve) is the equivalent of the Knorr-Bremse and Volvo OE numbers. This part directly replaces Knorr-Bremse OE number 1189396000. It also replaces Volvo OE numbers 1607889, 3944251.