If you do pry bar it's 3/4 in and if you do applied method it's 1. 3/4 in.?

@smartdrivetest

2 жыл бұрын

Yes - 1 3/4" inch on a Type 30 brake chamber fitted with a manual slack adjuster. Almost all slack adjusters in this day-and-age are going to be automatic, so it's 2" inches using the applied stroke method. See this chart for more info: www.smartdrivetest.com/cdl-air-brakes/chart-of-adjustment-limits Drop us a note if we can help further. Cheers Rick

@edenfieldjared0

2 жыл бұрын

@@smartdrivetest thanks for replying to his message. So I have no one to help me to perform applied stroke but thats what the dot does here, Sto see what they see on applied stroke with free stroke please give me the correlation. Two inches applied stroke equals how much free stroke? Lastly please give me the relationship or formula to compare applied and free stroke on my type 24 steer chambers. Please sir and thanks!!:)

@smartdrivetest

2 жыл бұрын

Cut a bit of board and jam it between the seat and the brake pedal. That’ll work. Find out if your state requires applied or free stroke my friend. Cheers Rick

@frankyholguin3838

2 жыл бұрын

@@smartdrivetest I’m confused in California can you do the applied pressure method to check if brakes are out of adjustment? And it’s no more than 2 inches?

I'm training as a class8 tech and this video taught me more than my trainer did. Thank you for clear and comprehensible information that will allow me to do my job properly.

@smartdrivetest

Жыл бұрын

Hi Rodan - And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Thank you , You might save some lives with this video. At the very least it will save me a bad DOT inspection. I got my CDL in Ohio. We were only required to know the tolerances, not demonstrate it. My schooling ( Clark State) also didn't teach it. The six pack thing wasn't even taught ! I will use this knowledge from now on. Thanks again from a newbie.

Keep up the great work! we need more insturcture like you on the youtube

@smartdrivetest

4 жыл бұрын

Hi MATBS Accounting - Thank you for your excellent compliment. And you are most welcome my friend. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Thanks Rick. Rejoining the "roadrunners" helping out though more on the older side. Running a haul truck with manual adjusters and keeping it tidy and on spec. Thanks for the info on auto adjusters and the "applied stroke" tests. Like recurrency on my pilots license. God speed.

Taking a test to be a driver trainer (diesel bear)……you are the one that had the best answer,,, great to know you are teaching the right stuff. Guys follow this gentleman….

@smartdrivetest

2 жыл бұрын

Hi Tony Galicia - And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Going for a CDL, or higher class licence with a vehicle that is equipped with air brakes? As part of your road test, you are required to determine if the air brakes are in adjustment depending on your jurisdiction's requirements: either the pry bar or applied stroke method. Learn how to determine if your air brakes are in adjustment and correct the adjustment if they brakes are not in adjustment.

@CarlosRamirez-vj4kz

7 жыл бұрын

Smart Drive Test THANK RICK ,SAFETY FIRST👍

@smartdrivetest

7 жыл бұрын

Thank you Carlos - for your comment. If there's anything else we can do, drop us a note. All the best, Cheers Rick

@truckintowardretirement686

6 жыл бұрын

These methods were never demonstrated in my 2007 Community College CDL class. Now I’ve been driving for the big orange, mega carrier for a year. They never discussed or demonstrated this. If I’m going to be responsible for paying every fine I get as a commercial truck driver, then I need more education than just how to do a pre-/post-trip inspection. Any suggestions on training or suggested reading? I’ve looked at 49CFR regulations but there seems to be other publications to which these regs are attached. Here lately-while being a dedicated Wally World driver-I’ve flagged brake linings for borderline DOT failure, causing 1 reload already. Of course, I catch crap from my fellow drivers, telling me to just pick up the trailer and get going if I’m going to make more money. In the final analysis, I don’t want a fine and I sure don’t want to hurt someone, including myself. I appreciate your feedback.

@sostrucking

5 жыл бұрын

@@truckintowardretirement686 you are responsible for the safety of others and the load....screw those other super trucking idiots. They have a license to drive one vehicle at a time and yours isn't one of them. Being safe is a part of being a professional. All these wrecks out there put a target on our industry and that affects our pay. I haul bulk mail for a company and am home every night making 25 to 30 dollars an hour.

I'm learning a lot from your videos, Your PDF Air Brakes Simply Explained and the NYS CDL Manual. In the NYS manual it does state that the this test can be done by hand. The first thought was "Yea, if you are 21 years old and that strong, sure you can". Not so easy without tools. Learning something new is challenging to say the least. Thank You Rick for your demonstration on the CDL Air Brake Check.

@smartdrivetest

2 жыл бұрын

Hi Toby Dulanski - And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

I got my CDL in 93 and I was taught that to check the slack adjusters you tightened the nut all the way down and backing it off by 1/4 turn. I never knew about measuring the rod. I have always worked for companies with maintenance schedules so I never had any trouble. Now I'm buying my own, I am reviewing some of these things I will be ultimately responsible for. I appreciate your video.

@smartdrivetest

5 жыл бұрын

Hi Gregory Peterson - Thank you for your comment. And congratulations on getting your own truck! All the newer trucks are fitted with automatic slack adjusters so you won't have to adjust them up anymore. And for the purposes of liability, you probably don't want to do more than keeping these greased and measuring the push-rod travel my friend. All the best, Cheers Rick

Thank you, so very much for your time and shared knowledge

Great information, thank you putting this video together.

Excellent tutorial, thanks for this.

I enjoyed the video , I was trying to find out about brake adjustments, so this six pack should work. Thank you I look forward to more.

@smartdrivetest

5 жыл бұрын

Hi Art Hedrick - Thank you for your comment. And you are most welcome. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

@shabroopsingh9625

6 ай бұрын

@@smartdrivetestshould we check the airbrake adjustment whenver we have new trailer?

Great job love the way you teach. God bless !

@smartdrivetest

6 жыл бұрын

Hi kenneth rippy - Thank you for your comment and flattering comment. And you are most welcome. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

That was a very good video. Thank you for posting it. It will definitely be a big help for not only new drivers but new techs.

@smartdrivetest

Жыл бұрын

Hi jason - And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Very helpful and clear instruction!! Thanks keep up the great videos!

@smartdrivetest

4 жыл бұрын

Hi Paul Jimenez - you are most welcome my friend. All the best, Cheers Rick

Well done! Answer is every day!!!! During pre trip Every day!!! Again, nice work thank you.

@smartdrivetest

2 жыл бұрын

Thank you my friend. Drop us a note if we can help further. All the best, Cheers Rick

Good job on this illustration, keep up the great work!

@smartdrivetest

3 жыл бұрын

Hi Driver Bank - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Thanks for the great video! I'll have to start doing a six pack as part of my daily PTI.

@smartdrivetest

5 жыл бұрын

Hi Irreverent Crawfish - Thank you for your comment. And you only have to do a six-pack if the brakes are out of adjustment. Most of the time these aren't going to be out of adjustment with automatic slack adjusters. Let me know my friend. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Very nicely explained

Very helpfu & informative

@smartdrivetest

5 жыл бұрын

Hi H Debesai - Thank you for your comment. And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

I'm loving all this

@smartdrivetest

3 жыл бұрын

Hi friedchicken - you are most welcome my friend. Have a look at this vid too: kzread.info/dash/bejne/loGsy86apLeWodo.html Drop us a note if we can help further. All the best, Cheers Rick

Great Information

Do it everyday in pre trip inspection. 4 hard brakes with pause before leaving. Never ever a problem.

@smartdrivetest

4 жыл бұрын

Hi Ravinder Sidhu - Thank you for your comment. And you're checking pushrod travel ensureing all the components are working and note damaged. All the best, Cheers Rick

Rookie here. Thank you so much. Great video.

@smartdrivetest

Жыл бұрын

Hi NCC2087 - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Hi Rick, Thanks for a refresher video, very educational, watched 3 times already, My test Tomorrow 2nd try. I forgot to mention the 2" free play, but I won't forget tomorrow. So many things to remember. Thanks again.

@smartdrivetest

7 жыл бұрын

Hi Bruce - Apologies for the late response. Thank you for your comment. How did the test go? All the best, Cheers Rick

@baclieustud

7 жыл бұрын

Smart Drive Test I pass the pre trip, but on the road, I failed again,,this time for going too slow. 3rd try tomorrow. DMV in Fontana, CA. are Anals. Still Thanks.

This helps so much. Thank you.

@smartdrivetest

9 ай бұрын

Hi @nathanausten4445 - Glad you liked it. Drop us a note if you have questions. Cheers Rick

Great video Mr. White!

Excellent video, thanks so much

@smartdrivetest

2 жыл бұрын

Hi Trucker camionero - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Thanks for the info 👍 helpful it was.

@smartdrivetest

2 жыл бұрын

Hi owen Ja - And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Great job on video!, like always!!👍

@smartdrivetest

7 жыл бұрын

Hi DENNIS RAMASHKA - thank you for your comment and compliment. It is greatly appreciated. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Thanks I really think this will help a person seeking getting a CDL license

@smartdrivetest

3 жыл бұрын

Hi Veronica Calloway - And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Such an awesome 👌 instructor 👏👏👏👏👍👍👍👍

@smartdrivetest

Жыл бұрын

Hi GETREAL! - We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Great video Rick.

@smartdrivetest

7 жыл бұрын

Thanks Paul - how's the job search going? Thanks Cheers Rick

Thanks dude. Great video.👍

@smartdrivetest

3 жыл бұрын

Happy to hear we could help out. All the best, Cheers Rick

Thanks for sharing Sir very informative tutorial

@smartdrivetest

Жыл бұрын

Hi jerry casana - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Always nice videos

Great video 👍

Thanks Bud !

@smartdrivetest

4 жыл бұрын

You are most welcome! All the best, Cheers Rick

All man thanks so much for the info buddy

@smartdrivetest

2 жыл бұрын

Hi Grant Skinner - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Thank you very interesting.

@smartdrivetest

3 жыл бұрын

Hi Jhoe Fernandez - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Good video Thanks

@smartdrivetest

2 жыл бұрын

Hi Serhiy Ryabtsev - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Great video.

Good information

@smartdrivetest

5 жыл бұрын

Hi Aperez - Thank you for your comment. And you are most welcome. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Great video!

@smartdrivetest

4 жыл бұрын

Hi Omar V - you are most welcome my friend. All the best, Cheers Rick

What a great video! Very informative and he's easy to learn from. I'm glad to see Tommy Lee Jones is keeping busy when he's off the silver screen! ;)

@smartdrivetest

4 жыл бұрын

Hi Dylan Lunenburg - Thank you for your comment. And you are most welcome. We're happy to hear we could help out. I like to think I'm better looking than Tommy Lee... 👍 All the best, Cheers Rick

Great Video

@smartdrivetest

2 жыл бұрын

Hi Dave James - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

thanks a lot

@smartdrivetest

7 жыл бұрын

Hi A Z - thank you for your comment and compliment. You are most welcome.If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Thank you for the vid and the chart

@smartdrivetest

5 жыл бұрын

Hi brandon thomas - Thank you for your comment. And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

!!!!THANK YOU!!!!

@smartdrivetest

6 жыл бұрын

Hi Jose Carbajal - Thank you for your comment and contagious enthusiasm. And you are most welcome. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

@josecarbajal1164

2 жыл бұрын

@@smartdrivetest 3 years later and still a great video!! 👍

great info, thanku!

@smartdrivetest

5 жыл бұрын

Hi Ant Sara - Thank you for your comment. And you are most welcome. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

@rezamoghadasianrad7743

5 жыл бұрын

thankul

@smartdrivetest

5 жыл бұрын

Hi Reza Moghadasian Rad - you are most welcome my friend. All the best, Cheers Rick

I was taught to do 2 hard brakes when stopped at least a few times a day just in case you get stopped in my air brake course. Of course still pretrip them. Doing my class 1 MELT in Alberta next month.

@smartdrivetest

3 жыл бұрын

Hi Colton Blumhagen - that's a good technique my friend. That's awesome that you're off to truck driving school next month. Have you started look for a job? Have a look here my friend: www.smartdrivetest.com/employment/ Drop us a note if we can help further. All the best, Cheers Rick

Rick, thank you for your training program. The only method I recommend when checking air brake chamber travel by ones self is a process I believe you touched on and that is to use a wedge of some kind between the brake pedal and a point under the dash to apply the brake pedal to full application. Ensure wheels are chocked and on level ground and ensure the brake pressure is not over 100 psi. By either marking the pushrods or having the colored plastic tabs installed. Parking brakes to be released. Also info the applied angle is to be between 90 - 105 degrees in California.

@smartdrivetest

7 жыл бұрын

Hi Mickey - thank you for your response - that is great. I looked at your previous post and admit I didn't fully understand the reason for the air pressure not being over 100psi? Yes, here in BC, some person indicated that students no longer had to say that the brakes are applied because the push-rod and slack adjuster form an approximate 90° angle. And now students only have to say that the brakes are applied because the push-rod is extended. How the heck does a student know that? If the brake is installed correctly, the angle is going to be approximately 90° - it's simple physics. The best force generated is at 90°. All the the best, Cheers Rick

@mickeysettlemire5931

7 жыл бұрын

Keep up the good efforts. The public needs it.

Adding another 2 cents worth... In Ontario the "applied method" is referred to as "Mark and measure". Exactly the same process as you demonstrated, just has a different name. Great videos, keep 'em coming!

@smartdrivetest

7 жыл бұрын

Hi Scott - Thank you for your comment. I believe the authorities thought they were being clever with the alliteration - 'mark & measure' sounds more cool than 'applied stroke method.' That is great information I'll add to the title and search tags. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Awesome video.

@smartdrivetest

3 жыл бұрын

Hi Robert Ross - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Very good

@smartdrivetest

3 жыл бұрын

Glad you enjoyed it! Always happy to help out. Cheers Rick

computer is a good thing man plus all of your videos

@smartdrivetest

5 жыл бұрын

Hi Reza Moghadasian Rad - Thank you for your comment. And you are most welcome. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Thanks for the knowledge I just bought a Rv diesel pusher with air brakes and I want to know about air brakes

@smartdrivetest

4 жыл бұрын

Hi Marco Casillas - Thank you for your comment. Congratulations on your new purchase. How many slides do you have my friend? These videos will help too my friend: kzread.info/dash/bejne/loGsy86apLeWodo.html Drop us a note if we can help further. Always happy to help. All the best, Cheers Rick

Tank you good vido

@smartdrivetest

5 жыл бұрын

Hi Esu Sekaw - Thank you for your comment. And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Use a two inch piece of material instead of a tape measure. It’ll act as a go or no go gauge, so if this clearance fits your out of spec.

IMPRESSIVE!!!! QUITE THOROUGH. THANK YOU. WHERE CAN I SEE MORE VIDEOS YOU HAVE PRODUCED?

Awesome video, thank you!

@smartdrivetest

Жыл бұрын

Hi Yuset Sanchez - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

Thanks rick vary well explained 👍 any videos on how to properly determine axle weights on super bs

@smartdrivetest

Жыл бұрын

Hi laurence belanger - And you are most welcome. We're happy to hear we could help out. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

I like this guy

@smartdrivetest

7 жыл бұрын

Hi Springfieldm14 308winchester - thank you for your comment and compliment. I like you too! 80) If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

My truck is as old as this guy is, so it has manual slack adjusters all around. Nearly 80 years old and they still work great!

@smartdrivetest

2 жыл бұрын

Perhaps I didn't communicate effectively - it's not manual slack adjusters that aren't reliable, it's training and the driver that have led to crashes. Some unfortunately very serious. We're happy to hear that your "big iron" is still rolling my friend. All the very best, Cheers Rick

good thing you provide helpful videos, for Commercial Drivers.. this vid would be helpful if i get to set my brakes on a roadtest in a Trucking company.. so is it internationall for both canada & usa the adjustment is should no more than 1/2' to 3/4" inch..

@smartdrivetest

7 жыл бұрын

Hi Ryan - thanks for your comment. It the United States they allow up to 1" inch on a pry bar method. However, the manuals also state you can pull the slack adjuster with your hand; however, that's not possible. You're going to need a pry bar. The best measurement is the width of your thumbnail. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Thank you ALOHA

@smartdrivetest

4 жыл бұрын

You are so welcome! All the best, Cheers Rick

Good video

@smartdrivetest

7 жыл бұрын

Hi casualtrucker - thank you for your comment and compliment. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Nice video

@smartdrivetest

7 жыл бұрын

Hi Iaven Ziad Odanodlam - thank you for your comment and compliment. If there is anything further we can do drop us a note, always happy to help. All the best, Cheers Rick

Vudeos are amazing bro...❤ em

@smartdrivetest

Жыл бұрын

Hi Pakky - you are most welcome my friend. Drop us a note if we can help further my friend. All the best, Cheers Rick

The truck driving school I went to stressed that checking your slack adjusters is always a part of your pre/post trip inspection

@smartdrivetest

5 жыл бұрын

Hi teal94z28 - Apologies for the late response. Thank you for your comment. It is law that you check the adjustment of the brakes everyday. However, since the advent of automatic slack adjusters, this is often overlooked and not done. All the best, Cheers Rick

Where can I buy the push rod tabs? This would be very useful for our fleet.

great video. very informative. Do you have a video where you adjust air break because it really needs adjustment? Im reading air brake adjustment book, i would really love to see it in action. Im trying to get my DL Class1.

@smartdrivetest

5 жыл бұрын

Hi Bernard Mallari - Thank you for your comment and query. And this is the video you seek: kzread.info/dash/bejne/naKWyciulKbAc5s.html&list=PL0x-bChcUvwG2bSWReQWnk9Tm92L7WN_O If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Great Vid! Is that yellow plastic called stroke indicator? My single axle dumper only has one pod with it.

@smartdrivetest

2 жыл бұрын

Yes, those are stroke indicators my friend. They won't stand up in a DOT inspection, but they do help with the daily inspection if you know these are set right. All the best, Cheers Rick

lots of people would say " I have automatic slack adjusters... they check them self and adjust" but the rules state in BC, Even trucks with automatic slack adjusters installed, Brakes SHOULD be checked each day as if you didnt have auto installed"

@smartdrivetest

5 жыл бұрын

Hi Fatcat Towing - Thank you for your comment. Automatic slack adjusters do not check their own adjustment my friend. According to law, you must check brake adjustment as part of your daily pre-trip inspection - as you stated. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

On a tractor trailer, truck only how many slack adjusters are there? I am guessing for two for the stairs, take exit Miami on the right to choose for each drive axle on the inside of each axle beside the tires on the inside.

Good Video, Thanks for uploading it! I never was taught the "Six Pack" technique. If you do a normal 4-Point Brake Test every day, and engage the brakes all the way down on the pedal on each push. Shouldn't that also make the slack adjusters move? Although after watching your video I'd bet that the air pressure would be below 90 PSI too quickly, and it might only get the brakes partially adjusted. And I must be a brute, because I can pull the slack adjusters out with my gloved hands. :-) Although I will be picking up a small pry bar like you used in the video to make it easier! LOL

@smartdrivetest

5 жыл бұрын

Hi LordTimelord - Thank you for your comment. I suspect you are a brute my friend if you can pull the slack adjuster out with you hand. ;0P And yes, if you're making 4 hard brake applications every day, that will adjust up the automatic slack adjusters, so long as these are being greased every couple of weeks. Also, you are correct - you can only do 3 hard brake applications before you have to pump the air pressure back up to 90psi. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Here in BC we use mandatory stroke indicators

Great video, Rick. Where can you find those yellow push rod markers on the internet? Inquiring minds want to know. Thanks

@smartdrivetest

4 жыл бұрын

Hi Miguel Rodriguez - Thank you for your query. You might find them at a truck stop. I suspect that you would find them at a truck parts store. All the best, Cheers Rick

on the applied brake check being out of adjustment at maximum 2 inches, what is the minimum push rod stroke allowed at a 100 psi applied brake application ? or is that just minus the maximum allowable free slack being 3/4 of an inch making it 1 1/4 inches ?

We have alot of trailers in our fleet that run on longstroke chambers (square ports) which allows extra half inch. We're phasing out and all new ad of 2011 are air disc equipped. My question is whats the difference between the two and why does one allow half inch more than the other. Hope to hear from you soon.

@smartdrivetest

6 жыл бұрын

Hi Eric Brule - Thank you for your comment and query. The reason that the long strokes have another 1/2" inch of push rod travel is owing to the bigger chamber, which allows for a full 3" of travel before the plate inside hits the bottom of the chamber. For safety however, the push rod is only allowed 21/2" of travel. In other words, it's the depth of the brake chamber that determines the travel of the push road and its legal limits. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

@ericbrule4465

6 жыл бұрын

Smart Drive Test thanks for the reply. It always baffled my mimd and couldn't find the amswer. I learned about 10 years ago on how to tell the difference between the 2.

@smartdrivetest

6 жыл бұрын

Hi Eric Brule - you are most welcome my friend. Glad we could help. All the best, Cheers Rick

@courtneyhoggard8168

2 жыл бұрын

@@smartdrivetest I was looking for the link to the chart you was talking about but not able to find it in the comments

if the brake chamber rod is not the correct length it will affect how the ASA works. especially that type of slack on the trailer. the double yolk has lots of wear being outside in the elements, and that slack is about a 6 in reliability anyways. some slacks adjust on the push stroke and some slacks adjust on the return stroke. so your six pack method only works on some slacks not all.

@smartdrivetest

5 жыл бұрын

Hi First Name - Thank you for your comment. And you are correct my friend - it's not going to work all the time, but it's worth a go before taking it into the shop. All the best, Cheers Rick

Positive

Just watched your video and want to say I appreciate your program for teaching air brakes issues to watch for. However I also teach air brakes and was DOT in Calif for many years also. I want to add a little info with your permission. The diameter alone isn't the factor for the travel allowance. Additionally the depth of also is a factor meaning is it identified as a LS or long stroke chamber. the long stroke allows 2" travel where as the non LS chamber allows only 1 3/4 "on a type 30. I like to advise in my classes a slight modification to your method of using an object to apply the brakes to actually be able to observe the applied travel. I recommend this method along with starting with the air pressure below cut in pressure and with the brakes applied to build the pressure to between 90- 100 psi. The brakes travel measurement are not out of adjustment when exceeding 2" if over 100 psi if they are within the 2" when not exceeding 100 psi. I have seen that process done at inspections which will then be written as a violation when per CVSA standards and manufacturers standards it is not. That then produces a brake violation on a drivers record which is a point and one half . Other than that you are doing great. Oh and the thumb nail measurement is only a recommendation.

@smartdrivetest

7 жыл бұрын

Hi Mickey - thank you for your comment and information. You are correct that the depth of the chamber is relevant to overall allowable push rod travel. Yet, in all the manuals that I've read, it only refers to the diameter and not the depth of the chamber - which in my mind makes more sense. LS brake chambers in my experience are rare, and were a product of the 1990s when authorities revamped the air brake course and required drivers to check brake adjustment. They were also a product of the transition to automatic slack adjusters. Finally cost precluded the widespread use of LS brakes chambers. Companies simply weren't going to pay extra for a brake chamber that only gave them another 1/2" of travel. I would like to know how drivers can observe push rod travel if they're alone and have to apply the brakes? Thanks again for the comment. If there is anything further we can do, drop us a note. All the best, Cheers Rick

paint the rod and the area around the rod white- makes for a easy glance for inspecting.

Brake checks daily

@smartdrivetest

5 ай бұрын

Awesome to hear my friend. You're one of the smarter drivers that looks after the equipment. All the very best, Cheers Rick

Where did you buy your pry bar. How long is it? I live in Vancouver.

Good video explanations, if you still don't know after this video, eishhhh then i don't know. Lol

I see that 2" is the maximum range before adjustment, what is the minimum? Surely the push rod must move a little as it applies the brakes, how much does it move minimally when the brakes are new and adjusted? Thanks

How ofter should the driver do that , to check that .? Thanks

What about extra long stroke travel type 24/30

Do you do a 6 pack while moving or stationary? Thanks for the knowledge! Havent seen the applied method before.

@smartdrivetest

4 жыл бұрын

Park the vehicle in a safe location, chock the wheels and release the brakes. 3 hard applications, let the air build back to maximum and then 3 more. You should be good to go at that time. All the best, Cheers Rick

@ajaugusto8

2 жыл бұрын

The 6 pack while moving is called a seatbelt check.

if your s-cam bushings are wore out, your automatic slack adjusters will exceed the 2" on the applied. So its not always the slack adjusters issue

@smartdrivetest

3 жыл бұрын

Hi Mike grazio - Thanks for the information. Can't say I've every had equipment old enough that it wore out the bushings. All the best, Cheers Rick

With the pry bar method are there differences in free stroke travel between brake chamber types as well as standard stroke to long stroke? I just noticed that the width of the thumb is sort of a generalization. I'm from Ontario but now working in alberta. Just trying to learn the pry bar method now.

@smartdrivetest

Жыл бұрын

Hi Chris - nope, so long as it's not more than an inch, you're good to go. Ontario is the only province or state that I'm aware of that does the applied stroke method for measuring push-rod travel. Every other jurisdiction does the pry-bar method. See this vid too: kzread.info/dash/bejne/n2mmlbaslLS3gdo.html Drop us a note if we can help further. Oh yeah, in Alberta, the leak test is 2 minutes my friend. All the best, Cheers Rick

Every day 👍

@smartdrivetest

2 жыл бұрын

Hi Jose Casiano - Always happy to help. All the best, Cheers Rick

Daily check them a lot of O/O check once a week would be cool if you showed how to check trailer brakes with the hand brake applied.

Do a six pack every end of shift. Check your brake adjustment. That way you can have things repaired if needed before you go back out. If not, you know your brakes are good to go for your pretrip.

@smartdrivetest

5 жыл бұрын

Hi Steve Chapman - Thank you for your comment. I think a 6-pack everyday is going to be a bit of overkill my friend. I might suggest doing one every couple of weeks. In combination with checking the adjustment every day, I'm confident you'll be golden. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

I’m from California and every inspection I’ve gotten in California they used the applied brake test

@smartdrivetest

2 жыл бұрын

Hi C & Z Trucking - it's not just CA my friend. Every DOT inspector in all the states is going to use the applied stroke method. The reason is that they have 2 people, which makes it easy. They just put a radio in the cab, and when they're ready to measure, they tell the driver to apply the brakes. And the applied method is way more accurate than the pry bar method. Drop us a note if we can help further my friend. All the best, Cheers Rick

@cztrucking1559

2 жыл бұрын

@@smartdrivetest I found this video do to problems with trailer brakes. I’ve replace (i do all my work myself) the chambers, drums, pads, s-cams, and slack adjusters and no matter adjustments I make, the applied stroke goes to the maximum 2”. So I’m trying the 6 pack method you said in your video now to see if that works. And it’s all four on the trailer that go to the 2” limit

@smartdrivetest

2 жыл бұрын

I'm not a technician, but it could be a couple of things: 1) the pushrods are too long; 2) the slack adjusters need to be adjusted manually. If you can't get it to work, I would counsel you to take it to a shop and have a mechanic have a look. All the best, Cheers Rick

I like to use a ball joint pickle fork. makes things easier. just get a short handle one if your working in tight space.

@smartdrivetest

5 жыл бұрын

Hi Wrax Artilles - Thank you for your comment and help for others. I suspect that tool would work very well for checking brake adjustment. If there is anything further we can do, drop us a note. Always happy to help. All the best, Cheers Rick

Hi. I am in BC. In theirDriving comercial vehicule book, page 188, at the bottom... I got confused... They wrote: "Pry method of free stroke measurement". Now... I believe they meant to say: Pry method...or... Free stroke measurement... Rrrrrrr.