Which step comes second when performing a Class I Brake Test?

The second step in performing a Class I Brake Test is to couple air hoses, open angle cocks, and inspect for leaks and proper valve positioning. This step is crucial because it ensures that the braking system is properly connected and operational before proceeding with the application of the brakes. By checking for leaks, you can confirm that there are no issues with air pressure, which is essential for effective brake function. Proper valve positioning is also critical, as it ensures that the brakes will operate as intended when the air is charged.

Each step in the Class I Brake Test builds on the previous one, and this particular step is designed to set up the system correctly and verify that all components are ready for testing. By addressing these connections and potential leak points at this stage, it helps to prevent complications in the subsequent steps of testing the brakes.