What should be done if the air compressor governor fails?

Answer: B — Replace or repair the governor immediately

If the air compressor governor fails, it is vital to replace or repair it immediately to ensure the air brake system functions properly. The air compressor governor is responsible for regulating the air pressure within the system by controlling when the compressor builds air and when it stops. A failure in this component can lead to inadequate pressure for the brakes to operate effectively, which poses significant safety risks while driving. Delaying repairs or attempting to work around the issue—such as ignoring the failure or increasing engine RPMs to compensate—would not address the underlying problem and could lead to brake failure. Regular cleaning may help in maintaining the system, but it won’t resolve a complete failure of the governor. Immediate attention to a governor malfunction is essential for maintaining the vehicle’s safety and compliance with regulations.