Semi trailer Air Brake Valve troubleshooting and replacement

Old valve-Bendix 5014015
New Valve-Bendix K109807 Price -453/$
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• Heavy Duty Repair

[@riiings]

Thank you for the excellent video frate! For anyone else in my position, if your trailer brakes won't release then your quick release spring brake valve has failed which is built into these full function boxes. I had a haldex system and the bottom portion of it failed, in order to get moving out of the way to a shop all you have to do is untighten the adjustment bolt on your slack adjuster to depart the brake shoe from the drum slightly to release and you're free!

[@c.a.mcneil7599]

Thanks for taking the time. you do a excellent Job explaining your thought process. Hope you have a cub to pass it on…

[@joseHernandez-uu2cx]

What will happens if air come out once u out the parking brakes can it be the same valve bad?

[@jaizchauhaan]

I had issue with my trailer no air going to trailer air tank locked brakes on dock after done loading. I replaced Spring brake valve, problem solve hope this helps who ever reads comments also behind cab @ tractor protection valve blue valve was exhausting air cuz of this issue

[@roman__2412]

Thanks for sharing. I got the same issue .

[@IBeChillin860]

Exact same thing happened to me yesterday after sliding tandems. I switched to a different trailer to see if it was the protective valve. It wasn’t it was ok. So all I did was took a hammer and hit the trailer spring valve a couple times and boom air came back right away. Released my brakes and no air coming from the protective valve.

[@sahatchen2777]

​@@IBeChillin860.

[@isaaccharles3011]

Great video brother greetings from the United states virgin islands in the carribbean us territory st.thomas this video is very informative and educational I am a journeyman heavy Equipment mechanic my dad taught me about heavy duty trucks and earthmoving Equipment repair he passed away in 2019 thanks for this great video with clear precise instructions for tear down and Replacement may GOD BLESS YOU AND YOUR FAMILY BE BLESSED BROTHER

[@richardmarshall1883]

Lmfao you did not just use the Loctite on that fitting

[@johndoe-lz8ru]

Use thread sealer not lock tight. It will leak . The red color thread sealant from original manufacture looks like lock tight but it's not

[@valeriumoscalu7580]

I am always using lock tight and never had problems with air leaks!

[@mr.carloschavez0408]

Thank you for making this video. Now I see clearly what went wrong with my trailer today. Mine started to go bad. It completely shut my brake pads to the drum and after a while it released them on its own so I moved a few miles and it shut them down again. I parked on the side of the road put it out of service ..

[@k2chall]

The same thing happened to me, I have smoke coming out. What I tried is the brake adjustment nut I keep on turning it anti clockwise, this helped me to separate brake pads from drum. I drove 700 miles doing this adjustment couple of times on my way.

[@jimmyfumbanks6081]

​@@k2challyou had a bad brake chamber I think his brakes are not engaging.

[@jaizchauhaan]

Thanks man I watched your video fix my problem with humping & abs light was always on for 4 years took me an hour for replace it Pisa cake

[@valeriumoscalu7580]

You welcome, I am glad it fixed your problem! Drive safe!

[@crazytrucker2376]

Did you put enough lock tight?

[@isaaccharles1189]

Great video Truckman I am learning more from your videos keep them coming I am learning a lot

[@ravshana]

So what was the issue in this truck exactly?

[@Rarebreed6]

Sir... Thank-you, Thank-you..!!! Much your video and explanation helped me alot... Big thanks...again Infinity Intelligence be with you. !!! Rare Breed here.

[@choyero2104]

Thanks man! I can fix that myself now 👍🏽💪🏽

[@josephsanchez8678]

What happens when the air is coming out from the center of the valve, is the whole valve bad or not?

[@hell_pike9150]

Me same question. Not maintaining brake pressure and air leaks from center hole when the trailer brakes are turned off

[@luisjoseliriano1795]

Great video. Extremely helpful. Thank you

[@valeriumoscalu7580]

You welcome! I am glad it was helpful!

[@amambo12]

Finally I founded the answer to this problem, thank you for your advice

[@trustinthelord2248]

How much did it cost u for part

[@KIKIREZI]

When I brake trailer shakes/bumps cuz it seems like only 2 tires brake harder even after adjusting could that be caused by bad valve or dust filled valve?

[@valeriumoscalu7580]

Is the trailer ABS working? The yellow abs light is off?

[@farmerjbird]

I'm working on a Transcraft stepdeck trailer. When you are travelling down the highway, say 55 mph, and pull the emergency hand valve on the tractor, it appears the brakes dont work on the trailer. However when i am in my lot, i pull forward to do a "tug test" it takes several seconds for the brakes to start to grab on the trailer to stop it. That doesnt seem normal to me. Its a 2005. The ABS brake valve is a Wabco 400 500 103, and is like almost 900 dollars.. i want to find out it is the problem before i spend that kind of money. Thanks for any help you can give!

[@antmoundlogistics]

I have a 2006 Transcraft DTL-3000 mines kinda do the same thing and also they take a while to release. My other problem is that when loaded the lift axle will not remain of the ground.

[@MrVio131]

Great how to video. I too have to replace that valve and was looking at your video just so I know what to expect. Le am puțin cu mecanica, dar nu am schimbat niciodată valva aia și am traileru din 2009. Mulțumesc mult pt video. Sănătate!

[@valeriumoscalu7580]

Nu uita sa dai drumul la aer din air tank before you will remove the valve!

[@smokeab4613]

Will this valve make the parking brakes not set

[@hallbros305]

I'm having the same problem, did you get it fixed? If so what was the problem?

[@smokeab4613]

@hallbros305 it was the park brake relay valve. Which is on back order for months where I'm at. It's the air valve over the rear most pull axle. Mounted to the cross member. My fix was I traded the truck in on a brand new 2023 W900 with a 86" sleeper. Couldn't be happier with the repair.

[@abdidiinsalah1142]

Thanks for making this vedio. that was amazing job 👏👏👏

[@valeriumoscalu7580]

You welcome Sir 🧑‍🔧

[@neatpleats11]

Thanks. Being new School Bus owner, I need to learn how these things work.

[@valeriumoscalu7580]

You welcome Scott 🙋🏻‍♂️

[@rayfails8903]

Great video step by step love it

[@valeriumoscalu7580]

Thanks🙋🏻‍♂️

[@silverdrillpickle7596]

Really great fhlooo comrade.

[@kalehallman]

Great video. I have an air ride trailer that empties most of the air through the glad hand when the air supply is released. Is this because of a stuck valve? Breaks work (service and parking), air bags inflate. The air just goes back to the front of the trailer and out my check valve on the back of my tractor and the park brakes don’t set immediately.

[@nlxlogistics2515]

I have the exact same problem. Did you end up finding out the problem ?

[@kalehallman]

@@nlxlogistics2515 it was one of the air valves on the trailer, I can’t think of the correct name for it. It’s right off the air tank.

[@nlxlogistics2515]

Pressure protection valve ?

[@nlxlogistics2515]

If you can let me know the name or a picture of it. I would gladly appreciate it.

[@sukhpurewal1570]

Very nice good Video Thanks

[@valeriumoscalu7580]

You welcome!

[@eddie1romanian]

Bravo🎉

[@rachiddriouich7583]

Excellent vidéo and explication thanks bro

[@valeriumoscalu7580]

You welcome!

[@IBeChillin860]

If you have locked trailer brakes and air comes out of tractor protective valve. Try hitting trailers spring valve with a hammer fixed mines after sliding tandems.

[@salimpatel2739]

I have 2019 wabash trailer. When I app brakes specifically with empty trailer brakes locks up at low speed. I have changed realy valve all 4 bracket chambers . All new drums shoes. And problem still there. I m slowing down well in advance to stop. Don't know what do please help

[@anelmehmedovic8395]

You’re testing the new one with the blue line connected? Does that mean the old one should be tested the same way?

[@sergiowatson4484]

My trailer humps whene I press the breaks and also locks up can this also be the Symptoms of a bad valve

[@robertovillalon2841]

Why thread locker instead of plumbers tape?

[@musheghhayrapetyan8982]

zabil postavit zip tie ...

[@alexastakhov24942494]

такая же проблема утечка воздуха внизу клапана, поменял клапан через месяц опять утечка с того же места, сейчас заказал ещё один клапан, боюсь чтобы через месяц ещё не пришлось покупать новый, платил $660 в PBS, не знаете в чем ещё может быть проблема? что выводит из строя клапан?

[@valeriumoscalu7580]

Или плохое качество клапана, или вода и грязи в ресивере с воздухом!

[@alexastakhov24942494]

@@valeriumoscalu7580 спасибо

[@valeriumoscalu7580]

You welcome!

[@trawk244]

My issue is when parking brake is release I lose air in secondary tank. I can hear air leaking from the exhaust port and it changes tone when I move the arms on the brake chambers.

[@سلامالعدنان]

Thank you sir, your videos very helpful❤

[@Cora865]

Thanks....excellent job on this video..

[@valeriumoscalu7580]

You welcome 🙋🏻‍♂️

[@gumecindoramirez6382]

Need to repair air valve on moving trailer any tips

[@valeriumoscalu7580]

What valve? You mean the valve that is opening the pins and allowing to slide the tandem along the trailer?

[@marcelcovaci9922]

Any ideas why the front axle brakes( on a trailer ) would grab faster than the rear ones. I checked the service brake valve and it’s not leaking into any of the brake chambers. The brake shoes look good, applied stroke is good. If you see this, please reply. Mulțumesc

[@valeriumoscalu7580]

Brake adjustment!

[@valeriumoscalu7580]

Give more clearance to front brake and it should be fine!

[@marcelcovaci9922]

@@valeriumoscalu7580 the front applied brake stroke is at 1.5” and the rear 1.75. Ride height is 16”, that’s the spec for the suspension. I don’t know is what else to check. Disconnect the electrical cord and see if the ABS module has anything to do with it? The ABS light is not ON… Tires are not flat, no grease on the shoes/drums, no leaking wheel seal, no rollers that fell out of their place. S-cams? Mulțumesc pt ajutor! Drum bun să ai

[@vasileverhovetchi3169]

Good job bro 👍🆗!!!

[@valeriumoscalu7580]

Thank you🙋🏻‍♂️

[@westcoasttruckingwestcoast8578]

good job,MULTUMESK

[@valeriumoscalu7580]

Thanks! Cu placere!🙋🏻‍♂️

[@akweteylouis]

Great tutorial.

[@valeriumoscalu7580]

Thank you!

[@David-qg8xd]

What valve is this?

[@valeriumoscalu7580]

Semitrailer abs brake valve with abs module!

[@haithamal-baghdadi9968]

Hello. How much is the price of the air for the air for the trichter of Ectros Bulldolar

[@126BEM]

Salut! S a rezolvat problema dupa ce ai schimbat valva? Eu am suspensie hendrickson si prima axa se infraneaza cu pun piciorul pe frana, in special cu load usor. Valva este 330$ si cu tot cu abs aproape 600$. Mai e si altceva care produce acest efect? Multumesc

[@richardmarshall1883]

Whatever you guys do do not use a lock tight on your airline fittings you’ll never get them back off

[@valeriumoscalu7580]

Depends what kind, blue one is ok, red will be too strong!

[@valeriumoscalu7580]

I am using it all the time, and it's all good!

[@richardmarshall1883]

Lock tight is made to keep a bolt from backing off. Thread tape is made to keep a fitting from leaking

[@jamesvera4481]

Tanker no brakes got air on bags only .

[@markanthony_rr]

Thread tape on air fittings, not loctite

[@valeriumoscalu7580]

I prefer loctite , never had any problems with it!

[@markanthony_rr]

@@valeriumoscalu7580 thanks for this video though, this was exactly what I needed

[@valeriumoscalu7580]

@@markanthony_rr you welcome!

[@sergeneb7110]

Salut. Cand apăs frâna se aprinde indicatorul de la ABS pe trailer si se aude un sunet exact asa cand face check la abs cand pui cheia in ON. Pina nu demult se aprindea Abs numai cand treceam peste vreo denivelare, dar nu tinea mult, 2 3 secunde si gata. Eri am trecut printr-o ploaie puternica si a inceput problema de mai sus. Valva exact ca in video, Bendix 5014015. Ce poate fi? Multumesc anticipat

[@valeriumoscalu7580]

Ai o conexiune electrica rea undeva! Verifica electric line dintre truck si trailer si vezi daca sta fixat bine la trailer si nu are free play! La fel verifica conectorul de la abs modul!

[@sergeneb7110]

@@valeriumoscalu7580 ms frumos. Nu stii cumva part # la abs sensor pu tipul sdta de valva?

[@valeriumoscalu7580]

The abs wheel sensors for semitrailers are all the same diameter, the only difference is the wire length and there are 90 degree sensors and straight sensors! Your should be 90 degree and just make sure the wire is long enough to get from wheel hub to the abs module, if it's short you will need an wire extension!

[@valeriumoscalu7580]

r955341 abs sensor kit

[@tikimaskgaming9174]

This helped man... just need the other side where the red supply lines go to..also what style air system is this cuz its difficult to find air diagrams

[@UrimThummin]

Thanks!

[@valeriumoscalu7580]

Thank you Richard, Appreciate it ! I am glad it was helpful!🙋🏻‍♂️

[@jaswinderchauhan4641]

hey I got the same problem with mine 2016 utility abs keeps coming on & jumps a lot when brakes applied I have k109325 now on the cant find same one but I see k109808 can I use the looks the same to me?

[@valeriumoscalu7580]

If it looks similar yes you can replace it with another one! Make sure have the same number of sensors, 2 or 4!

[@213eddy]

QUICK RELEASE VALVE BENDIX

[@germainewillfixit7785]

Man this is explained really well. I have air coming from the center of that valve tho.

[@f.e.9453]

Me too. Have you found out why air comes through the center hole

[@hensly77]

Because it could be a bad chamber

[@germainewillfixit7785]

@@hensly77 man where were you last year. I did finally get it checked and indeed it was 2 bad chambers causing g that air to purge from that little valv.

[@germainewillfixit7785]

@@f.e.9453 brake chamber on both sides was damaged. Replaced them both.

[@jay2033man1]

Thanks!

[@valeriumoscalu7580]

Hei , thankyou so much, I really appreciate it🙌🧑‍🔧

[@inderinder420]

Thanks bro 🙏

[@valeriumoscalu7580]

You welcome 🙋🏻‍♂️

[@kimroyful]

Thanks man great explanation...mine is leaking through the center screw

[@juandoe7112]

Goodvideo!😫🤔💯

[@valeriumoscalu7580]

Thankyou🙋🏻‍♂️

[@Argenti-o2t]

Cat a costat valva abs?

[@laurabeatricepopa4848]

Super job !! Unde ai garajul

[@valeriumoscalu7580]

Tacoma, Washington State!

[@valeriumoscalu7580]

Multumesc 🙋🏻‍♂️

[@moisesalmonaci4359]

With the brake release the valve is leaking where the blue line Is connected to the valve do I need to replace the valve or the fitting can be repace alone

[@valeriumoscalu7580]

If from fitting is leaking then replace just fitting!

[@valeriumoscalu7580]

Wait, blue line that is going to parking brake or to service brake valve?

[@moisesalmonaci4359]

Parking brake cause when I release the parking brake starts leaking

[@valeriumoscalu7580]

Then probably the problem it's in the valve, with parking brake released you need to have air pressure only on red line and not on blue one!

[@moisesalmonaci4359]

Any idea what might be then

[@fulgencekimaryo1358]

Eight way valve

[@dharmasagarpatil8485]

Good Demo on vehicle!

[@yebelcampos6248]

God bless you. Thank you very for your knowledge Maestro!!!

[@todiandrei6823]

Salut Azi mergând normal pe autostradă am întâmpinat un ambuteiaj,am frânat ușor că era zăpadă,30 km/h după care am accelerat dar am simțit că merge înfrânat M am oprit când am putut,aproape a luat foc roata. Sa blocat roata ,discul era roșu.doar roata stânga spate camion.am deblocat șurubul de 24 MM și totul normal frânează doar că nu am frâna de parcare pe roată. Întrebare: posibil sa fie cilindrul de frana sau etrierul. Camion Volvo fh 2010 Mulțumesc anticipat.

[@valeriumoscalu7580]

Salut! Surubul de la Brake Chamber ai invedere?

[@valeriumoscalu7580]

Daca da, atunci trebuie sa dai drumul la surub inapoi! Atit timp cit e strins nu o sa ai parking brake la acea roata! If that 24 mm bolt is tightened it holds the spring and don't allow it put tenssion on the rod that is pushing the slack adjuster! So as long as it is tightened you will be without parking brake on that tire!

[@todiandrei6823]

Posibil sa fie cilindrul de frână sau valvola franei de parcare?ms

[@valeriumoscalu7580]

Numai la roata stinga spate lipseste frina de parcare da?

[@valeriumoscalu7580]

Trimite o poza pe messenger sa vad ce sistema de frinare si sa fiu sigur ca ti-am inteles corect!

[@doneman66]

Thank you in Greek

[@antmoundlogistics]

Great video

[@momagmobile]

Great video

[@Argenti-o2t]

Fain baieți

[@warderemohamed7314]

Whats the size of the adjustable wrench?

[@mechmobile2019]

Metric one 🤦

[@michelnaranjo3089]

Just to inform I've the same issue today morning, bought a new valve $231, replaced my self after turn on the truck, found the same issue again, turning on and off few times filled up air few times too, then the problem disappeared ,drove 4 hours ,guessing there's something more

[@valeriumoscalu7580]

What are your symptoms exactly?

[@bugattidatrucker668]

Where did you buy it for $231 ?

[@julianrofriguez9749]

Good job, but why did you have to take apart brake chamber, when you could have just remove the air hose to check for leaks?

[@valeriumoscalu7580]

I replaced the brake chamber also , the spring was broken inside!

[@dicklaycock1343]

Great video thanku from outback Australia

[@valeriumoscalu7580]

Thank you!

[@valeriimoscalu8794]

Воздушная система в норме

[@valeriimoscalu8794]

Бараво молодцы