Air brake doesn't work / Bad parking brake valve

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The trailer was without service brake , driver was able to release the parking brake but the service brake were not working, and all this because the parking brake valve was broken and it were not allowing the air to go to the air tank, after we replaced the parking brake valve the tank was filled with air and the service brake started to work!!!
More air brake system repair videos in the playlist on the link below:
• Semi trailer Air Brake...
Heavy duty repair videos in the playlist on the link below:
• Eaton transmission and...

Опубликовано:

11 сен 2024

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Комментарии : 58

@mirandarights5566 6 месяцев назад

Thank you for the video..I watched it yesterday and when the mechanic showed up to troubleshoot I mentioned what the problem might be.... after two hours of trying various things he came to the realization that the problem was indeed the pbv....😊

@valeriumoscalu7580 6 месяцев назад

You welcome! I am glad it was helpful!

@vicpetrishak7705 8 месяцев назад

In situations when stuck in the boondocks , remove the cap off the air governor and loosen the screw to let the compressor pump 150 lbs . This will loosen the stuck air valve plunger . Readjust air governor , replace valve at home .

@anunodisooo1 5 месяцев назад

Thank you, very good break-down on how things work, my trailer breaks wont hold to slide my tandoms.

@valeriumoscalu7580 5 месяцев назад

You welcome!

@brokemillionaire1500 8 месяцев назад

Now I know why my tractor parking won’t the truck thank u

@valeriumoscalu7580 8 месяцев назад

You welcome!

@Art_99S Год назад

Is it the same reason why the trailer release nub doesn’t want to stay in release position?

@marcelcovaci9922 2 года назад

Sănătate compatrioate! Mulțumesc pt explicație și video.

@valeriumoscalu7580 2 года назад

Cu placere! Drive safe! 🙋‍♂️

@blaschalas 3 года назад

Thank you 🙏

@valeriumoscalu7580 3 года назад

You welcome!

@blaschalas 3 года назад

Where are you located on

@valeriumoscalu7580 3 года назад

Tacoma Washington!

@blaschalas 3 года назад

@@valeriumoscalu7580 to far I’m in chicago I was looking for a mechanic

@MrAlexrobotica 2 года назад

Норок, Так ты из Молдавии 🤣 дэй друму 🤣🤣🤣🤣

@valeriumoscalu7580 9 месяцев назад

😂😂😂

@kewlchickification 2 года назад

This is probably a question everyone knows but I’m wondering how a parking brake may become disengaged? If you hit the buttons and then go to work on the truck (volvo) what would cause it to roll back (not the 5 sec safety). The truck rolls after putting the brake buttons on - like 30 seconds or a minute later.

@ohwanz Год назад

Did you get a solution?

@maxa2847 Год назад

Im having that issue basically no parking on the trl all break part are new.

@truckdoctor1973 9 месяцев назад

Buna treaba baieti, multumim! Cat costa piesa si cat ar fi manopera la asa ceva?

@meharyyohanes4039 5 месяцев назад

Hi thanks for the tip where are you located please

@salvadorenosenalaska5913 2 года назад

My parking brake is not working, I will change this part maybe that is the problem

@billyblack1137 2 года назад

How was it? Did that fix the issue

@salvadorenosenalaska5913 2 года назад

@@billyblack1137 no, it didn't. Am looking still to find what to change.

@twothumbs8925 2 года назад

Did you ever find out what it was? I'm having the same problem.

@dereckisaac30 3 года назад

Got a question...2008 freightliner m2 lose air from both tanks while driving.force to pull over because the park brakes will engage...what do you think is the problem?

@lexacost 2 года назад

Check the fittings at your tanks

@keving6521 Год назад

Hey Valeriu, I have a problem on my trailer. 2016 Great Dane when I apply trailer parking break and disconnect the red glad hand, the air comes out from the trailer side. Can you help me please. I replaced the valve that you replaced it didnt fix the problem. Air still comes out when I apply trailer parking break

@ismailbeghi3510 4 месяца назад

Did u fixed the issue my head is blowing with same issue😢

@harryl7946 3 года назад

Well I see you figured out the correct way to use a crescent 🌙 wrench

@harryl7946 3 года назад

Almost. Just when I thought you got it - you go and use it backwards again.

@terrellscaife2411 4 месяца назад

Hey buddy, I’m having an issue with a bluebird bus when I push in the parking brake. Sometimes the parking brakes won’t release or it’s a delayed release. What are your suggestions?

@valeriumoscalu7580 4 месяца назад

Sometimes can be delayed release when the air tank doesn't have enough air, and you need to wait for the pressure to build up!

@valeriumoscalu7580 4 месяца назад

Sometimes can be the parking brake valve itself!

@terrellscaife2411 4 месяца назад

Where is the parking brake valve normally located?

@valeriumoscalu7580 4 месяца назад

Most of the time directly on the air tank!

@terrellscaife2411 4 месяца назад

Hey thanks

@haiderk3246 2 года назад

Thanks

@valeriumoscalu7580 2 года назад

You welcome!

@cjthebossmans301 2 года назад

Do you know anything about international pro star,, air is coming out off my service blue lines that hook up to the trailer,,

@blackericdenice 2 года назад

I've been driving for 15 years and I didn't know how those valves work.

@dundar198 Год назад

My trailer parking brake not working but service brake works how?

@igor26170 3 года назад

Обьясни пожалуйста какая функция синего шланга на этом валве

@mauriciodiaz3566 Год назад

My tanks have air although I don't have brakes cant figure out what's wrong 🤷‍♂️

@valeriumoscalu7580 Год назад

If it's cold outside the airline can be frozen!

@speed5996 2 года назад

What is a part number?

@justalex6134 2 года назад

Сколько стоит air valve?

@ismailbeghi3510 4 месяца назад

$70

@MrAlexrobotica 2 года назад

Я одного не понял зачем ты тред лок на фитинг намазал, там или тефлон или тефлон паста нужна а не голубой локтайд WTF

@Social_Brat 2 года назад

My is the tractor not trailer. Any advice?

@valeriumoscalu7580 2 года назад

What is the problem?

@Social_Brat 2 года назад

@@valeriumoscalu7580 the tractor brake is not working. I released it but it won't stop the truck.

@bmbhman1 Год назад

Check to see on the emergency side with park brake applied if there is air still coming out of lines To brake chambers - could be a faulty park brake valve or MV3 valve as they call it or a faulty relay quick release valve - if that is all good and your park brakes aren’t holding check for broken brake pot springs and for glazed drums