Airbrake Test for Class “B” CDL...... Passenger Bus & School Bus

Airbrake and Parking brake test for School Bus and Class “B” Vehicle.... To perform a Airbrake test for a Class “B” CDL.
- Chalk the rear wheels so the vehicle won’t roll
- Start the engine and build your air pressure to 120 psi
- Turn the vehicle off
- Turn the key to the on position (Not Running)
- Push the parking brake in
- Hold the service brake down for one minute
- Watch the air pressure gauge to make sure it doesn’t lose more than 3 psi in the minute your holding the brake.
- Once the minute is up and you didn’t lose more than 3 psi
- You start to pump the service brake
- When you pump the brake down to 60 psi the warning light and buzzer should come on
- You continue to pump the brake until the parking brake pops out between 40 & 20 psi
- Once the parking brake pop out
- Start the vehicle back up
- The air pressure will build back up
- Once the air pressure rise above 60 psi, the warning light and buzzer should go off
- Continue to build the air pressure between 100 & 120 psi
- This will conclude the Airbrake test

[@PSGAMEPLAY4K]

It's a great video. Thank you for your time.

[@judahgraphics6427]

what about a seat belt?

[@kfelix2934]

This air brake might pass but many things of concern and might be bad training for other drivers
1: @02:34 when release the parking brake you should let the pressure stabilize b4 doing the countdown ( applying the brakes to early defeat that purpose )
2: when you push in the yellow knob your are charging a complete separate air-supply line that previous had no air
3: seat-belt is fail in most testing sites
4: i never heard of any one testing both forward and reverse, forward-only is acceptable
5: Also the test with service brake applied forward/reverse I nevere heard of that test also
the instructor did a good post explanation but this one of the strangest video I ever seen.

[@wolverineballer3376]

FAILED in GA. Didn’t press service brake at start before releasing park brake chalks are not there in real time. Also didn’t mention he needs to listen for spring brakes release with park brake pop out. In most states this is pass or fail.

[@aaronmoore7778]

I’m not in GA and that doesn’t apply where I am. When I come to GA I’ll adapt to their rules

[@ebonyessence8]

I can see and hear the video just fine.

[@Raphaelgamesroblox7298]

There is no video visual only sound

[@pugmalley]

I see video but it is hard to hear someone wearing a muffler.

[@ahmedbilal8508]

Bad video with lot of points missing
Avoid watching this video

[@lillysmalls51]

Can’t see or really hear anything 👎🏼👎🏼👎🏼👎🏼