435K views · 6.5K reactions | How Air Brakes Actually Work 樂 #brake #airbrake #engineering #3danimations | Voltrex4 | Facebook

40K views · 202 reactions | The CDL air brake test: Why should you do it?樂 Link in comments to watch our video tutorial on how to do a three step air brake test! #fypviralシ #reelsfypシ #AirBrakeTest #trucking #trucker #truckdriver | Drive 4 ATS | Facebook

How to do an air brake test? Watch this video for part 1. #cdl #cdltraining #airbrakes | Driving Academy

⏱️ Air Brake Test: Pressure Loss Check Explained Learn how to properly perform the air brake applied pressure test — one of the most critical parts of your CDL pre-trip inspection. In this step, you’ll test that your air system doesn’t lose more than 4 PSI in one minute while holding the service brake. Remember: patience and precision matter here — rushing this step can cause you to fail the test. Watch carefully as we demonstrate how to: ✅ Apply the service brake correctly ✅ Start your timer an