DMV, CDL, Hand Book (Audio) 2018... AIR BRAKES .... Section 5

To bypass Intro, click on 1:22 ... Section 5 - Air Brakes - CDL Manual - Read Along (Entire Text) Studying on the Move Transcript with Larger Font: Section 5 - Air Brakes - This section covers: • Airbrake System Parts, • Dual Airbrake, Systems, • Inspecting Airbrakes, and • Using Airbrakes
This section tells you about airbrakes. If you want to drive a truck or bus with airbrakes, or pull a trailer with airbrakes, you need to read this section. If you want to pull a trailer with airbrakes, you also need to read Section 6, Combination Vehicles.
Airbrakes use compressed air to make the brakes work. Airbrakes are a good and safe way of stopping large and heavy vehicles, but the brakes must be well maintained and used properly.
Airbrakes are really three different braking systems: service brake, parking brake, and emergency brake.
• The service brake system applies and releases the brakes when you use the brake pedal during normal driving.
• The parking brake system applies and releases the parking brakes when you use the parking brake control.
• The emergency brake system uses parts of the service and parking brake systems to stop the vehicle in a brake system failure.
The parts of these systems are discussed in greater detail below.
5.1 - The Parts of an Airbrake System
There are many parts to an airbrake system. You should know about the parts discussed here.
5.1.1 - Air Compressor
The air compressor pumps air into the air storage tanks (reservoirs). The air compressor is connected to the engine through gears or a v-belt. The compressor may be air cooled or may be cooled by the engine cooling system. It may have its own oil supply or be lubricated by engine oil. If the compressor has its own oil supply, check the oil level before driving.
5.1.2 - Air Compressor Governor
The governor controls when the air compressor will pump air into the air storage tanks. When air tank pressure rises to the “cut-out” level (around 125 pounds per-square-inch or “psi”), the governor stops the compressor from pumping air. When the tank pressure falls to the “cut-in” pressure (around 100 psi), the governor allows the compressor to start pumping again.
5.1.3 - Air Storage Tanks
Air storage tanks are used to hold compressed air. The number and size of air tanks varies among vehicles. The tanks will hold enough air to allow the brakes to be used several times, even if the compressor stops working.
5.1.4 - Air Tank Drains
Compressed air usually has some water and some compressor oil in it, which is bad for the airbrake system. For example, the water can freeze in cold weather and cause brake failure. The water and oil tend to collect in the bottom of the air tank. Be sure that you drain the air tanks completely. Each air tank is equipped with a drain valve in the bottom. There are two types:
• Manually operated by turning a quarter turn or by pulling a cable. You must drain the tanks yourself at the end of each day of driving. See Figure 5.1.
• Automatic-the water and oil are automatically expelled. These tanks may be equipped for manual draining as well.
Automatic air tanks are available with electric heating devices. These help prevent freezing of the automatic drain in cold weather.
5.1.5 - Alcohol Evaporator
Some airbrake systems have an alcohol evaporator to put alcohol into the air system. This helps to reduce the risk of ice in airbrake valves and other parts during cold weather. Ice inside the system can make the brakes stop working.
Check the alcohol container and fill up as necessary, every day during cold weather. Daily air tank drainage is still needed to get rid of water and oil. (Unless the system has automatic drain valves.)
5.1.6 - Safety Valve
A safety relief valve is installed in the first tank the air compressor pumps air to. The safety valve protects the tank and the rest of the system from too much pressure. The valve is usually set to open at 150 psi. If the safety valve releases air, something is wrong. Have the fault fixed by a mechanic.

[@brianja26]

You should be the voice over of every textbook ever made. You bringing me so much joy knowing I can listen to eat. Read it and then use what I’ve learned to pass my test. Thank you sir super excited

[@susanwilliams7141]

Mr. B. Sir you are truly a blessing to me right now. I am trying to become a School Bus Operator and took the 4 written exams recently and failed the General Knowledge and Airbrakes. I passed the other two, but I recognize that the questions were somewhat worded differently than how I studied. Now I'm watching your video and wished I had seen it before I took my exams because without a doubt I would have passed with flying colors. Thank you 😊

[@BarryBranton]

To pass the state written general knowledge exam, you should study sections 1, 2 and 3. See the CDL Opus video: kzbin.info/www/bejne/gWexZKGvpLt8nNU

[@susanwilliams7141]

@@BarryBranton Thank you for this, I really appreciate you. 🙏❤️

[@BarryBranton]

@@susanwilliams7141 Thank you, Susan. I think you're amazing.

[@ForGrantVidoes]

Thank you! I listened to your videos repeatedly and have passed the airbrakes to start a new segment of my life! You are a godsend!

[@BarryBranton]

Congratulations! That's great news! You've done a fine job, Sir. If I have helped you, then I'm doing what I'm supposed to be doing. Good luck, and keep up the great work!!!

[@brianlove-el6096]

This helped me alot I'm in Georgia passed air breaks and combinations yesterday. General knowledge next.I suggested this channel.

[@BarryBranton]

Congratulations! Thanks for watching! I really appreciate it. Thanks for your comment. Please LIKE and SUBSCRIBE to my channel. I recommend: 1. CDL Opus: kzbin.info/www/bejne/gWexZKGvpLt8nNU 2. Combo video playlist: kzbin.info/www/bejne/hqrFpnWvn9p1fbs 3. General Knowledge: kzbin.info/www/bejne/foCpfpyhh9tseNU 4. Air Brakes video playlist: kzbin.info/www/bejne/l6HIoZSegc6tmqc 5. Passenger video playlist: kzbin.info/www/bejne/bHPOfpKEgNF8f6M 6. School Bus video playlist: kzbin.info/www/bejne/sGO3g4ehiaaXfdU 7. Hazmat1: kzbin.info/www/bejne/iGeYgYimnNOobZI 8. Hazmat2: kzbin.info/www/bejne/e4KvoKimg5tjntU

[@adriantucker5593]

Help me as well

[@lilianzamora1724]

Thank You Mr. Branton I really enjoy study with you and the way to teach. God Bless You

[@BarryBranton]

Thank you, Lillian, and may God richly bless you in all ways.

[@nephewstranins420]

Thank you for making these videos I passed my general knowledge test this morning now going for the air brakes only missed it by one

[@emmanuelhabte4491]

Great presentation thank you

[@alexanderexama1681]

I would like to say thank you for this I have passed my airbrakes and I’m going for my combination that I truly appreciate you God bless you

[@BarryBranton]

Thank you, Alexander! That is very kind of you. I'm happy to be of service. I suggest you watch my Combination Vehicles Playlist before taking the exam: kzbin.info/www/bejne/hqrFpnWvn9p1fbs

[@alexanderexama1681]

I want you to know I pass by combination with no problem all I had was to wrong and I skip one I am truly appreciate of of your work question do you have A audio of the pre-trip inspection thank you for your time

[@blackheart8737]

All the questions on the test were on this video??

[@gsprmssr2011]

Thank you for your help.

[@BarryBranton]

It was my pleasure! Take care.

[@rara-cc3yx]

Thank you 🙏

[@BarryBranton]

You're welcome, and thank you so much for watching!!!

[@shaynaelaine707]

Thank you!!!

[@abigailtorres9428]

Thank you !

[@BarryBranton]

You're welcome, Abigail! Thanks for watching!!!

[@michaelpruitt1857]

Thank you sir.

[@BarryBranton]

You're welcome, sir.

[@travisnunya7960]

The long intro isn't necessary (it's good) and end up jamming out to it instead of focusing on my homeworks

[@BarryBranton]

You can't study if you're not relaxed. The intro is supposed to relax you, so you can study well.

[@travisnunya7960]

@@BarryBranton ❤️

[@loviaj1030]

Hi! Is this video good for Florida folks??

[@furyvideo1]

THANK YOU MR BRANTON I passes all my test 95 on my air brakes 89 on general knowledge and passenger 89, thank you sir for the information

[@BarryBranton]

Congratulations! Well done!! I'm proud of you!!!

[@linckiwifulton9278]

Passed my general and combination.. just need air brakes glad I ran across this.. thank you

[@BarryBranton]

Congrats on passing. Air Brakes video playlist: kzbin.info/www/bejne/l6HIoZSegc6tmqc

[@BarryBranton]

Also, take a look at this air brakes video learning series: kzbin.info/www/bejne/fHbZaI2MjKaMjNE

[@linckiwifulton9278]

@@BarryBranton thanks helped a lot I passed

[@lifewithamy7407]

Can you please share the link to me of the in passenger and the bus place

[@roibrycker8897]

Idk if I said this before but dub this in different languages will get u more views/traffic.

[@BarryBranton]

Thanks for the info.

[@coolcutsgal2]

Can you take the tests individually on different days? ~~UPDATE~~ So, I went to the MVD (Arizona; CA they call it the DMV-whatever!) So I go in the first day which was 08Jun21, I PASSED the Air Brakes and the Combination Vehicle but FAILED General Knowledge. So in this state you have to wait 2 days. well my dad (98) was in the hospital anyways and I wasn't totally able to focus with all that I had on my mind plus the area was very noisy. but the day that my dad passed away 10Jun21 I got "the" phone call and thought "I'm not going to allow this to retard my future I'm going to get dressed and take that test today! and If I pass GREAT! And if I fail, that's ok I have another try!" went in, sat down, passed the General Knowledge in less than 20 minutes! I swear my dad had his hand on my shoulder! THEN, Double clutching...oh my goawd! got zero information as to the WHY of the double clutching! so.....I heard dad's voice in my head telling me just what to do! BAMM!! Got that too! so....had to go BACK to the mvd because the paperwork "got lost" and when the gal at the customer service line printed out my paperwork it says I pass all 3 tests on 08Jun21!!! IDK if that matters anything but I thought that was ok! SO they are making SUCH A BIG DEAL about this In cab air brake test and it has to be done JUST LIKE THIS.... any input? can you retake JUST THE SECTION you missed or do you have to go back to square one?

[@BarryBranton]

I did. (For your confirmation, contact your DMV and verify.)

[@angelmartinez1990]

Are these good for California

[@BarryBranton]

Watch kzbin.info/www/bejne/l6HIoZSegc6tmqc

[@Naturelife-ph3oi]

Is this same for Florida too ?

[@BarryBranton]

should be okay

[@romartmtzald8563]

I have my appointment for the general knowledge test, what videos did you recommend and if this is good for Oregon

[@BarryBranton]

I recommend "CDL Opus" kzbin.info/www/bejne/gWexZKGvpLt8nNU and if you are going after the Class "A" CDL, then also watch Combo video series kzbin.info/www/bejne/hqrFpnWvn9p1fbs

[@romartmtzald8563]

@@BarryBranton thanks for all your info, your videos are so helpful.

[@thomasheisler]

can you get one done for section 14, youtube is being an ass to me.

[@BarryBranton]

According to the federal CDL manual at goo.gl/FfkAAp Section 14 is not listed. Please give me the section title and the state for which you are asking.

[@thomasheisler]

special requirements for texas commercial motor vehicles

[@BarryBranton]

Here's a link to a video by another creator on that subject: kzbin.info/www/bejne/i4eUaaanbdiopLc

[@reallyreally5193]

@@thomasheisler Texas is weird for makeing us take 4 test I take mines next week

[@roibrycker8897]

Good content

[@BarryBranton]

Thank you.

[@chadreed1859]

Just pass my air breaks

[@BarryBranton]

That's awesome, Chad! Congratulations! Great Job! My videos are good for all states in the US. I recommend the following videos: 1. CDL Opus: kzbin.info/www/bejne/gWexZKGvpLt8nNU 2. Combo video playlist: kzbin.info/www/bejne/hqrFpnWvn9p1fbs 3. General Knowledge: kzbin.info/www/bejne/foCpfpyhh9tseNU 4. Air Brakes video playlist: kzbin.info/www/bejne/l6HIoZSegc6tmqc 5. Passenger video playlist: kzbin.info/www/bejne/bHPOfpKEgNF8f6M 6. School Bus video playlist: kzbin.info/www/bejne/sGO3g4ehiaaXfdU 7. Hazmat1: kzbin.info/www/bejne/iGeYgYimnNOobZI 8. Hazmat2: kzbin.info/www/bejne/e4KvoKimg5tjntU

[@nycnycBarb]

CONTINUING WITH THE TEXT😂

[@BarryBranton]

Yes, in case you didn't know, what "continuing with the text" means is the narrator is done explaining the illustration and is then proceeding to continue reading the text at that time. For example: 05:23 09:00 17:21 22:05 24:29 29:34 41:31

[@supermodelatlanta1354]

Dude. I failed twice I d k wtf is going in ga.

[@BarryBranton]

I advise you watch this video on how to pass your CDL exam: kzbin.info/www/bejne/bX-7qIGtgLOknNU

[@KrakkenXXX]

What’s with this stupid distracting ruler at the bottem???

[@quintezzzzzzzzzz]

Thank you !!!

[@BarryBranton]

You're welcome! Awesome! I recommend watching: 1. CDL Opus: kzbin.info/www/bejne/gWexZKGvpLt8nNU 2. Combo video playlist: kzbin.info/www/bejne/hqrFpnWvn9p1fbs 3. General Knowledge: kzbin.info/www/bejne/foCpfpyhh9tseNU 4. Air Brakes video playlist: kzbin.info/www/bejne/l6HIoZSegc6tmqc 5. Passenger video playlist: kzbin.info/www/bejne/bHPOfpKEgNF8f6M 6. School Bus video playlist: kzbin.info/www/bejne/sGO3g4ehiaaXfdU 7. Hazmat1: kzbin.info/www/bejne/iGeYgYimnNOobZI 8. Hazmat2: kzbin.info/www/bejne/e4KvoKimg5tjntU My videos are good for all states in the US.