Congratulations Sir, excellent video, I am Truck's diesel mechanic and he just showed me something. It doesn't bother mechanics to tell us their ideas or knowledge But they are on top of us without letting us work. Thank you very much for your video and your excellent explanation. God bless you. From Dallas Texas to the order.
Thank you. I'm a diesel mechanic and have seen this problem before. You did a great job in presenting and explaining the problem and steps it takes to diagnose the issue.
Thank you sir. Another diesel tech here down in Florida. Abs and brake diagnostics always gave me problems. I saved your video so I can come back to it if needed. 🍻
New to air breaks and you hit the nail square on the head . The answer to bleed back I found was a break can diaphragm that had gone bad causing the air to back track thru the valves to foot valve and leaking thru a line stabbed thru firewall. Parking break set or not it leaked plugging it off caused parking breaks to set if they were released. However the truck is also having an air dryer issue. Thanks for posting and helping out all the others with air break issues. Break on!!!
Can this cause an accident how dangerous is this because i think I have the same issue when push air brake it just shoots out air sound like left drive tire, the pedal, and some times from actually interior supply button
Knowledge is always good to know, I am also car mechanically inclined and I’ve been in the trucking industry for about 30 years now, I have my very own computer diagnostic equipment and I’m able to fix a flat to change the stem valve, etc., but I also highly appreciate you taking the time most people have a little crappy video about maybe five or 10 minutes 15 or quickly but I’ll tell you my brother you took your time to read and comprehend and I thank you for passing that knowledge on because I am at Owner operator I don’t expensive things could get out here I want to thank you, Robert from Fort Myers Florida👋👌👍✌️
Great video, I have a severe pressure loss when i press on my foot break when my trailer was attached. Changed the foot pedal valve and that seemed to work but now the leak is back again after attaching a trailer with a heavy load. My pressure gauage on the dash loses air immediately which is not safe at all. I can hear the air coming out as im pressing on foot brake. So after watching your video I hope i can check those delivery lines and see if one of the relays is bad. That was my next process to consider after researching and seeing if my relay valve was bad in the back. But maybe it is the same relay that you had underneath is the issue. I have an international as well so thank you for the video and taking the time to share this. Best of luck and keep rollin!!
That was a good video my man I’ve been driving for 13 years and I’m now studying and going to school to be a heavy duty diesel mechanic. I just got to this part of my lesson and wanted to know what it was and thank you for explaining all that.
You are a life saver been trying to diagnose this same exact issue and been scratching my head you definitely made me a better tech tonight thank you for sharing and passing on quality knowledge kind sir!!
Thanks for taking the time to make this video. I have the same Issue on a 88 frieghtliner dump truck. We already replaced the foot brake valve but thankfully we do our own work in house so we're not out a ton for labor. Hopefully this helps me to diagnose it quickly.
good one mate! i took my 2014 powerstar in for problems the quote was stupid money ,got the truck back to the yard and over two weeks fixed all the faults,did what you did ,worked the problems out,i now have the leaking treddle you had,thanks a lot for your information .in australia it seems to be hard to find a good iveco fitter ,so yeah my hat off to you ,safe driving mate
Repair videos are never anyone’s favorite, but I’m glad you still put them out there for us shade tree mechanics. This video helped me a lot, thanks for posting
thks buddy, you the only one explaining the air/ elect switch , l was lost also, l almost went down a hill in WV because of a leaking switch , please dont go down a mountain without a jake break , dont go down with air leaks, dont go down with bad breaks, make sure you adjust your breaks before you go down & do not go down if you got air leaks especially in the break system, otherwise you will wreck your life career, load freight & truck. Cant stop a run a way truck going down hill. Mountain driving is Serious business not like driving on level ground . It ony takes a minute to heat up your breaks to the point where you loose em
Thank you driver I'm having the same issue on my Volvo and couldn't find a single video or anything on Google about this issue... I've had the foot valve replaced twice money wasted 🤦🏾♂️ because that's what the shop diagnosed now I know what to check thanks to you
I hope this helps solve your issue. These parts ain't cheap and these shops need to train techs on proper diagnosis procedures so we aren't wasting time and money. Let me know how it turns out. 🤞
Well done !, you did a perfect video. I know , my 30th year in Air brakes. You got it spot on m8. If it was not the relay it could be your trailer control doing the same. Once again well done
Thank you very much. It makes me feel good that someone with experience in these systems would give such a great response. I have had alot of positive feed back on this video and really am glad it can help. Again, thank you.
@@JAYT76501 i my country 8 out of 10 mechanic can not succesfully diagnose Air system errors. I think its a pity that their training sometimes dont really involve air systems enough. Usually its an additional training program. You should realy try and do a basic training course. In your country Bendix would probable be the guys most likely that does the training. Its a three or 4 day course at max, but for a guy like yourself, you will ace it! I bet. God speed!
Very informative video. When you come to these types of mechanical diagnostics, normally, they are very costly, because as you said it on the video, those part changers that all they do is making you expend money on things you don't need. I have an issue right now, with my Peterbilt, and it might be a great video to start with. When I hit the brake on very cold weather, my brakes stay stuck down. and when I stop and delete the code by turning the key towards the opposite side, brake gets release. How I know it gets stuck down, because by troubleshooting, I turned all the truck lights off, and the stop light stays on both, trailer and truck. Or is either a brake release valve sending air back to the brake pedal valve, or the brake pedal valve is having a leak somewhere, that when it gets so cold it become icy. Since on hotter weather, above 32 degrees, brake system works perfectly fine.
Glad it helped. Unfortunately very few of these technicians today don't diagnose. They just throw parts at the problem until they "find" the problem. Good luck and stay safe.
Thank you for this video, i have same truck with same issue and it was easy to repair because of your video. God bless you and have plenty of safe miles.
Thank you, you just helped me solve the mystery problem on my truck that I spend enough money on and nothing helped! Until I found this video!!! I guess today “so called mechanics” can only change oil and filters… if that 😆
This is awesome info. I have same truck same problem and same line Is feeding back. Can cover line and front brakes come on. Still leaking air out exhaust port so checking rear also. Thanks for taking the time to post this.
Hey Brock, glad I found your video. I currently having I guess the same issue with my brakes. My biggest problem is my brakes appling themselves while truck is running & rolling down the road, where it looks like I am brake checking. If I am in the North it happens a lot when down South in warm temps it mostly applies the brakes at night driving or parked. I am goin to see if I can diagnose it the way you did. I have a 2018 international LT625.
OMG this is an amazing video to learn from because my school bus is doing the EXACT same thing! This video perfectly describes and explains what my own problem is and exactly where I need to focus my attention to fix it. My damn brake relays. I wouldn't have thought of that either because I'm new to heavy duty trucks and air brake systems too. My school bus is a 1997 International 3800 full size, dog-nose school bus with the DT466E engine, AT545 transmission, and Blue Bird body. Now what I'll do is find the relay(s) that are toast, pull them, put them on my work bench and start taking them apart, going through them and inspecting them. It's possible that all they need is to be cleaned in some special way or lubricated or something simple. But at least I'll see where they failed inside and why they failed. I'll try to make a video on that too so others know. Thanks again for your great video Brock!!!
Great video! Probably saved me a ton of money. My problem is slightly different. Air is leaking from that valve and my brakes are setting while driving. Now I believe I can properly troubleshoot the problem. Thank you for the video!!!
Awesome video...thanks for making it. I've got an issue with a horn type sound coming from the front when I press the brake pedal. Also my driver side steer seems like it's grabbing harder than the rest. Trying to diagnose what it could be and I stumbled onto this video. Not sure if it's my problem...but at least it gives me some ideas about how these systems work. Thanks again!
This video is vary helpful we need more videos on things like this I'm dealing with a air brake issue and this helped thank you . Be safe out there driver
Thank you. My truck only when I’m hooked with trailer when I apply food break hearing leaks from the dashboard. When break completely or push break all the way stop leaking only when slowly breaking and only when I have trailer, bobtailing no problem!
I am dealing with same problem, well not exactly.. my foot brake valve is leaking from the firewall which I and my mechanics determined by spraying it. Like you said that thing is like 600+ in dealer, and they dont even have it now. They gave me the part number and truck parts store ordered it for 270... looks kind of messy to get to it, i got 2015 international and it sure looks more difficult to get to than 2019.
Really good to hear. There has been nothing but good responses on this video and I am really glad it has helped so many. Good luck to you and stay safe.
Sometimes if you put some air oil into the emergency supply it will take care of this issue. You have the emergency line leaking into the service side. Some huge companies that everyone knows about demand that you try this before replacing the relays. This is a very common fix before replacing a component. I guess I would try it before paying an arm and a dick for a repair. It takes very little time. You have to lube it where the supply goes into the relay. 11/16 and 13/16 wrench.
Same problem on 2019 peterbilt 579, did what u said and heard brakes ingage air was back feeding also when i checked that line. But my break lights are also staying on when i tap them. Have to turn truck off to make them go off
I am having an issue which i think its the same thing my cab and tractor air bags goes completely flat within 30min i spray soap and water and I can’t seem to find any leak i will check those line and follow your method and see what happens
CONGRATULATIONS MY BUDDY YOU ARE THE BEST MECHANIC JJJJJ 🎊
Congratulations Sir, excellent video, I am Truck's diesel mechanic and he just showed me something. It doesn't bother mechanics to tell us their ideas or knowledge But they are on top of us without letting us work. Thank you very much for your video and your excellent explanation. God bless you. From Dallas Texas to the order.
Thank you. much appreciated.
Thank you. I'm a diesel mechanic and have seen this problem before. You did a great job in presenting and explaining the problem and steps it takes to diagnose the issue.
Thank you
Thank you sir. Another diesel tech here down in Florida. Abs and brake diagnostics always gave me problems. I saved your video so I can come back to it if needed. 🍻
@@Bronzeman777 glad you found it helpful.
Same situation. 800$ for treadle valve, part+labor which was good, and they don't know yet what causes leak. Thanks for video!
New to air breaks and you hit the nail square on the head . The answer to bleed back I found was a break can diaphragm that had gone bad causing the air to back track thru the valves to foot valve and leaking thru a line stabbed thru firewall. Parking break set or not it leaked plugging it off caused parking breaks to set if they were released. However the truck is also having an air dryer issue. Thanks for posting and helping out all the others with air break issues. Break on!!!
Thank you.
Can this cause an accident how dangerous is this because i think I have the same issue when push air brake it just shoots out air sound like left drive tire, the pedal, and some times from actually interior supply button
Knowledge is always good to know, I am also car mechanically inclined and I’ve been in the trucking industry for about 30 years now, I have my very own computer diagnostic equipment and I’m able to fix a flat to change the stem valve, etc., but I also highly appreciate you taking the time most people have a little crappy video about maybe five or 10 minutes 15 or quickly but I’ll tell you my brother you took your time to read and comprehend and I thank you for passing that knowledge on because I am at Owner operator I don’t expensive things could get out here I want to thank you, Robert from Fort Myers Florida👋👌👍✌️
Thank you. With the responses I have gotten from this video I am really glad I made it.
Great video, I have a severe pressure loss when i press
on my foot break when my trailer was attached. Changed the foot pedal valve and that seemed to work but now the leak is back again after attaching a trailer with a heavy load. My pressure gauage on the dash loses air immediately which is not safe at all. I can hear the air coming out as im pressing on foot brake. So after watching your video I hope i can check those delivery lines and see if one of the relays is bad. That was my next process to consider after researching and seeing if my relay valve was bad in the back. But maybe it is the same relay that you had underneath is the issue. I have an international as well so thank you for the video and taking the time to share this. Best of luck and keep rollin!!
That was a good video my man I’ve been driving for 13 years and I’m now studying and going to school to be a heavy duty diesel mechanic. I just got to this part of my lesson and wanted to know what it was and thank you for explaining all that.
thanks for watching. glad it helped. good luck
You seem like a reasonable common sense individual. Don't ever change, try to infect others if you can. 🙂
You are a life saver been trying to diagnose this same exact issue and been scratching my head you definitely made me a better tech tonight thank you for sharing and passing on quality knowledge kind sir!!
Thanks for taking the time to make this video. I have the same Issue on a 88 frieghtliner dump truck. We already replaced the foot brake valve but thankfully we do our own work in house so we're not out a ton for labor. Hopefully this helps me to diagnose it quickly.
Thank you for watching. I really hope this video helps to resolve your issue. Good Luck and be safe.
Same exact truck and same problem. You sir saved me time and money. Appreciate it!
So glad this video has been helpful. Probably the best video I've done to date. Good luck and thanks for watching.
good one mate! i took my 2014 powerstar in for problems the quote was stupid money ,got the truck back to the yard and over two weeks fixed all the faults,did what you did ,worked the problems out,i now have the leaking treddle you had,thanks a lot for your information .in australia it seems to be hard to find a good iveco fitter ,so yeah my hat off to you ,safe driving mate
Repair videos are never anyone’s favorite, but I’m glad you still put them out there for us shade tree mechanics. This video helped me a lot, thanks for posting
Glad it helped.
thks buddy, you the only one explaining the air/ elect switch , l was lost also, l almost went down a hill in WV because of a leaking switch , please dont go down a mountain without a jake break , dont go down with air leaks, dont go down with bad breaks, make sure you adjust your breaks before you go down & do not go down if you got air leaks especially in the break system, otherwise you will wreck your life career, load freight & truck. Cant stop a run a way truck going down hill. Mountain driving is Serious business not like driving on level ground . It ony takes a minute to heat up your breaks to the point where you loose em
Thank you driver I'm having the same issue on my Volvo and couldn't find a single video or anything on Google about this issue... I've had the foot valve replaced twice money wasted 🤦🏾♂️ because that's what the shop diagnosed now I know what to check thanks to you
I hope this helps solve your issue. These parts ain't cheap and these shops need to train techs on proper diagnosis procedures so we aren't wasting time and money. Let me know how it turns out. 🤞
@@JAYT76501are the relay valve hoses easy to pull out to test and put back on.
@kendrichand yes. They are the quick connect style just like the s.aller air lines.
Thank you sir, very helpful, to the point and easy to understand. You have saved me from buying a foot treadle valve.
Glad it helped. Be safe
I have the same problem mechanic he can't find the problem I lost a lot of money I got the problem from ur video thanks alot 🤔
Thank you so much for making this, you just saved me a lot of money.
Glad the info helped. good luck to ya!
Thank you from Finland, you saved lot of money for me!
That's awesome. Glad it helped. Stay safe.
Had the same exact issue with my 2018 LT,, this is a LIFE SAVER
same problem now 18 lt625
@@kendrichand ez fix I can walk you through it & save you some money your don't need to replace the relay valve
@@kendrichand your front brakes will lock up if you don't take care of it asap
@@omarh4694 whats the fix what parts to change
@@kendrichand no need to change parts
Well done !, you did a perfect video. I know , my 30th year in Air brakes. You got it spot on m8.
If it was not the relay it could be your trailer control doing the same. Once again well done
Thank you very much. It makes me feel good that someone with experience in these systems would give such a great response.
I have had alot of positive feed back on this video and really am glad it can help.
Again, thank you.
@@JAYT76501 i my country 8 out of 10 mechanic can not succesfully diagnose Air system errors. I think its a pity that their training sometimes dont really involve air systems enough. Usually its an additional training program. You should realy try and do a basic training course. In your country Bendix would probable be the guys most likely that does the training. Its a three or 4 day course at max, but for a guy like yourself, you will ace it! I bet. God speed!
@@Rooivalkpilot thanks I will check it out for sure.
Thank you very much for stepping through your logic/troubleshooting and putting out this video!
Thanks for your wonderful video, it's help me lot. Same issue I had it but finally found its bad relay valve under the fifth wheel. Volvo vnl 2015
Thanks brother!!! I learned a lot from your hard work! Much appreciated sir!
Very informative video. When you come to these types of mechanical diagnostics, normally, they are very costly, because as you said it on the video, those part changers that all they do is making you expend money on things you don't need. I have an issue right now, with my Peterbilt, and it might be a great video to start with. When I hit the brake on very cold weather, my brakes stay stuck down. and when I stop and delete the code by turning the key towards the opposite side, brake gets release. How I know it gets stuck down, because by troubleshooting, I turned all the truck lights off, and the stop light stays on both, trailer and truck. Or is either a brake release valve sending air back to the brake pedal valve, or the brake pedal valve is having a leak somewhere, that when it gets so cold it become icy. Since on hotter weather, above 32 degrees, brake system works perfectly fine.
Man thank you i fought this for a week your video was spot on
Glad the info could help. stay safe
Thank you, very informative and I found my problem using this video. Mechanic told me it was foot valve, turned out to be my front relay.👍👍👍
Glad it helped. Unfortunately very few of these technicians today don't diagnose. They just throw parts at the problem until they "find" the problem.
Good luck and stay safe.
Thanks for sharing, was going through same problem the whole week. they couldn't find the issue imghit try this one tomorrow
Hope you get it figured out. Stay safe.
Thank you for this video, i have same truck with same issue and it was easy to repair because of your video. God bless you and have plenty of safe miles.
Great video buddy, I’m having a similar problem losing air overnight. Thanks again
Thanks. Hope it helped.
I found the same video and FINALLY got the problem fixed.
Thank you, you just helped me solve the mystery problem on my truck that I spend enough money on and nothing helped! Until I found this video!!! I guess today “so called mechanics” can only change oil and filters… if that 😆
Glad it helped. Best video I ever did good luck to you.
I'm a diesel mechanic and tell you the truth I rolled my eyes when you told me you had an international😂
Great video I was about to change the foot break valve you just save tons of money, but after watching your video we found the problem. Thanks 👍🍻
Glad it helped.
Thank you sir, I have an international pro star and you have helped me so much with this video. Perfect Video!!!!
This is awesome info. I have same truck same problem and same line Is feeding back. Can cover line and front brakes come on. Still leaking air out exhaust port so checking rear also. Thanks for taking the time to post this.
Thank you for watching and glad it helped. Good luck.
Thanks for the info. I'll now be checking the relay valves. I also, was surprised that this fault is hard to find on youtube.
My Volvo just got the air leak gremlin. Sending to my mechanic now.
Great info on the brake relay diagnosis. Thanks for the video.
Thank you for your time researching… thanks 🙏
Thank you
Hey Brock, glad I found your video. I currently having I guess the same issue with my brakes. My biggest problem is my brakes appling themselves while truck is running & rolling down the road, where it looks like I am brake checking. If I am in the North it happens a lot when down South in warm temps it mostly applies the brakes at night driving or parked. I am goin to see if I can diagnose it the way you did. I have a 2018 international LT625.
I pulled that line & the brakes applied, I could actually feel the air coming out of the line. thanks a ton!!!!
Definitely check your brake relays. Could be getting air through a diaphragm.
Being humble but you nailed it awesome video
Thank u! I’m having the same issue today driving down to wallops island. Put foot prints n brake pedal and loose air very quickly
OMG this is an amazing video to learn from because my school bus is doing the EXACT same thing! This video perfectly describes and explains what my own problem is and exactly where I need to focus my attention to fix it. My damn brake relays. I wouldn't have thought of that either because I'm new to heavy duty trucks and air brake systems too. My school bus is a 1997 International 3800 full size, dog-nose school bus with the DT466E engine, AT545 transmission, and Blue Bird body. Now what I'll do is find the relay(s) that are toast, pull them, put them on my work bench and start taking them apart, going through them and inspecting them. It's possible that all they need is to be cleaned in some special way or lubricated or something simple. But at least I'll see where they failed inside and why they failed. I'll try to make a video on that too so others know. Thanks again for your great video Brock!!!
Thank you for the information it fixed problem on KW T-680
thank you for this video, helped me figure out the bleed back on my trailer
Great video! Probably saved me a ton of money. My problem is slightly different. Air is leaking from that valve and my brakes are setting while driving. Now I believe I can properly troubleshoot the problem. Thank you for the video!!!
Awesome video...thanks for making it. I've got an issue with a horn type sound coming from the front when I press the brake pedal. Also my driver side steer seems like it's grabbing harder than the rest. Trying to diagnose what it could be and I stumbled onto this video. Not sure if it's my problem...but at least it gives me some ideas about how these systems work. Thanks again!
Thank you. I hope it helps you to figure your issue out. I would also look at your brake chamber???
My truck has the same issue as yours, I’m still trying to figure out what causes the issue, you got any luck?
great man 👨 thanks this big help for owners operator 😊
Good info thanks for making the video I am in the process of learning my self and this is a great help 👍
Thank you soooo much I found the problem with my 2022 international lt
great video helps a lot to understand foot valve probiums
That was great man, very informative and detailed. Thank you, had the same exact problem on my international.
Thank you very much for your response. I hope this video continues to help.
This video is vary helpful we need more videos on things like this I'm dealing with a air brake issue and this helped thank you . Be safe out there driver
You be safe. Glad it has helped people and hopefully saved some money.
Great video. Love the detailed explanation
Thanks. I hope it helps.
Thank you for the detailed explanation. Will save time in future. Godspeed and stay safe. Subscribed.
Thanks for the information I an having similar issues
Hope this helps
Perfect video! Thank you sir
Great video. It was exactly the same issue and solution for my truck. Helped me save some money today . Great work. 👍
Thank you having a problem with in park watching air guage on both tanks loosing same amount of pressure 5 psi in 2 minutes trying to figure out why.
Have you tried a squirter bottle with soap and water? Spray all your airline connections and look for bubbles.
Thank you. My truck only when I’m hooked with trailer when I apply food break hearing leaks from the dashboard. When break completely or push break all the way stop leaking only when slowly breaking and only when I have trailer, bobtailing no problem!
What was the issue I'm having same problem
Thank You Sir definitely helped me diagnose my issue… !!!!
Good to hear. Thanks for watching.
Great video and very very informative 👏
Very informative video, was a great help to me!!👍🏽
Glad it was helpful. I like those kinda videos and hopefully I will get to do more in the future.
I am dealing with same problem, well not exactly.. my foot brake valve is leaking from the firewall which I and my mechanics determined by spraying it. Like you said that thing is like 600+ in dealer, and they dont even have it now. They gave me the part number and truck parts store ordered it for 270... looks kind of messy to get to it, i got 2015 international and it sure looks more difficult to get to than 2019.
It didn't look fun on the 2019.lol
Glad you were able to find it for 270.00. Good luck and comment back if it solves your issue. Stay safe.
GREAT job on this video
Thank you
thx for documenting this
Thank you brother
YOU ARE LEGEND. THANK YOU 😊
Great information thanks
Thanks for the Video
It helped a lot !
Really good to hear. There has been nothing but good responses on this video and I am really glad it has helped so many. Good luck to you and stay safe.
Same issued I took the green light out and I have air like u say I orden the back relay valve thanks buddy
Let me know how it turns out after you get the new relay.
Sometimes if you put some air oil into the emergency supply it will take care of this issue. You have the emergency line leaking into the service side. Some huge companies that everyone knows about demand that you try this before replacing the relays. This is a very common fix before replacing a component. I guess I would try it before paying an arm and a dick for a repair. It takes very little time. You have to lube it where the supply goes into the relay. 11/16 and 13/16 wrench.
Good info. Wish me luck, it's time to go pull some airlines
Good luck
th-cam.com/users/shortstRBX7NKO2tE?si=LuhnrFQY01dtBZ4V
Same problem on 2019 peterbilt 579, did what u said and heard brakes ingage air was back feeding also when i checked that line. But my break lights are also staying on when i tap them. Have to turn truck off to make them go off
Awesome, very Informative.
Thank you
Wow thank you very much i did learn alot
Very informative. Thax.
Thank you sir i had the same issue..thankz a lot god bless you
Brother thank you.
Very good, thanks
This was great information . Thank You
Great information buddy thanks sir
Hope it helps
THANK YOU SO SO SO MUCH THANK YOU
Nice teacher
🙏 thank you , it helped
Good to hear
So when you spray for a leak do you do it with the truck off. Good info
Sorry for the expensive school of hard Knox. But good video
Thank you 😊
Great video!
My English it's no soy good but i'm trie yo Say thanks very muchs i spend a lot a time lokiing for same information... I'm going to do this.
Great video
Good video brother
Thank you
Thanks you video help me
Good video brother. Thank you.
Thanks,
I’m chasing an air leak with my Freightliner now.
Stay Alert, Arrive Alive
I am having an issue which i think its the same thing my cab and tractor air bags goes completely flat within 30min i spray soap and water and I can’t seem to find any leak i will check those line and follow your method and see what happens
I believe there is a check valve in the airbag system to keep air from back bleeding. I would look at that as well.
Ok i will definitely look into that i will keep you posted with my discoveries
@@StefanRas please do
Good information