CDL Air Brake Test: Spring Brake Pop-Out Explained YouTube Description In this video, I explain the final step of the CDL air brake test — checking the spring brakes. You’ll learn: ✔️ How the low-pressure warning light and buzzer must activate before 60 PSI ✔️ How to complete the applied pressure test without losing more than 4 PSI in one minute ✔️ How to properly fan down the brakes ✔️ When the spring brakes must pop out (between 20–40 PSI) ⚠️ Important: You must not stop pumping if only one br

CDL Air Brakes: Low Air Warning Test Explained 📄 YouTube Description Learn how to properly perform the Low Air Pressure Warning Light & Alarm Test for your CDL air brake exam. This step is crucial — and forgetting even one detail (like turning the key to the ON position) can instantly cause you to fail. In this video, you’ll see: ✔️ How to fan down the brakes correctly ✔️ When the low pressure warning light and buzzer should activate ✔️ The correct script to say to the examiner ✔️ Why the alarm