We are going to go over all of that today in more detail, so stick around we'll be right back with that information You're going to check the compressor that it builds with set volume of air in a prescribed amount of time.Īnd then finally you’re to do a leak test.Īnd the very last test is a tug test on the parking brake and do a response test on the service brakes. You're gonna check the governor, the low-air warning ensure that the spring brakes apply between 20 and 45psi. There's another video here on the channel that will explain both the pry bar method and the applied stroke method.Īfter you do all the checks outside-lines, hoses, valves-check all the brakes for adjustment you’re going to go in the cab, and there's five check in the cab. There are some jurisdictions that will get you to do the applied stroke method. Make sure you chock the wheels, pump the air pressure up over 90 pounds per square inch, in order to be able to check the air brake for adjustment, and then release the parking brakes.Īnd make sure that you have the required amount of air to do the outside inspection of the components.Īnd your mantra for the outside components are: “secure, not damaged, not leaking.'Īnd to check the air brakes, you're going to do the pry bar (free-stroke) method.Īnd this for the most part is the way to check air brakes.

Now for those of you in Canada, the airbrake pre-trip inspection is going to be part of your airbrake endorsement and that's going to be a separate requirement for getting your CDL license - your commercial driver's license. Now before we get started here I would like to thank Inland Kenworth here in Vernon, British Columbia, Canada for providing equipment and making this video possible. To do the CDL pre-trip inspection you must inspect the air brake components as part and parcel of your CDL license. If you're operating a vehicle that has air brakes you're going have to be knowledgeable air brakes.

Hi there smart drivers, Rick Smart Drive Test talking to you today about the airbrakes and the pre-trip inspection that you need to do as part of your CDL license.įor those of you in the United States, the CDL license-the commercial driver's license-for those of you working towards becoming a truck or bus driver. For truck or bus driver inspection of air brakes is 'MUST KNOW'!

Cdl air brake test cheat sheet