Common air leak on a Freightliner Cascadia, pass through manifold or air manifold
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- เผยแพร่เมื่อ 8 มิ.ย. 2020
- Common air leak on the Freightliner Cascadia, the pass through manifold or air manifold located in the driver side firewall just behind the foot brake valve. You can try to remove the air line and cut tip off and then reinsert the air line and see if that helps. But the problem is usually in the fitting itself which is NOT serviceable.
TOOLS needed: torx bit set, ratchet, extension, 1 and 1/16 deep socket and maybe flat screwdriver.
Takes about 1-2 hours to remove and install depending on your experience.
Super easy to do yourself. - ยานยนต์และพาหนะ
Wow! Wow! The best directional, Instructional and informative Video ever. I have a leak in the passthrough in my 2012, and C.D.E just saved me time and money! Thank you / Asante Sana!
Gracias your knowledge really help me with my air leak under the cab. Many blessings.
Thank you buddy you gave the confidents to do it myself and you spoke english..God 🙌
Great job on the video👍🏻
I just replaced that on my truck good video
thanks for the insight I am working on mine now.
Thank you. I do have a leak. Now I have an idea where to look.
The o-rings inside the manifold are replaceable. Spent $0.90 replacing three cracked o-rings. New manifold is around $180 at freightliner so I saved a lot fixing my old one. Look into this before replacing the whole manifold!!
Definitely a great way to save some money.
Wow dude, show me how and where you bouth the parts, I want to fix it mine too. Let me know, mine is leaking
Can you please provide the link for our ring replacement
Just make sure you clip air lines a quarter 8n and be sure and push them all the way in. I didn't initially and paid the price. Also put new switches in at this time as well.
I agree with you 100%,
Kudos on the informational vid ! Commercials were questionable but relatively cool too
The ads? Yeah, not sure how YT incorporates it in the video.
thank you for sharing i just found leaks on this
Thank you
Yup replace mine.pretty common. My 2010 Columbia the same except have to remove center console
Timothy Marlin yeah. The Columbia and Century have come a lone way. So easy to install. Only issue can be is the wiring.
Glad you were able to keep your truck rolling.
air này đẹp lắm anh ơi
I only have the yellow air hose leaks on the engine side. Do I need to replace the manifold or the ending fit? Where is your shop? Thanks!
I don’t believe they sell just the fitting. The air manifold is sold complete. We are located in Montebello, Ca
Would replacing this would fix the "transmission low air" problem?
Depends on how bad the air leaks is, I would recommend to get underneath the truck and try to locate the air leak at or around the transmission. The leak on the manifold maybe a separate air leak.
Appreciate you sharing these videos
NACHO OJEDA glad you are enjoying them.
Hello, thanks for your video. My 2013 cascadia is leaking from the area where you installed that red little plug/pin/stud. Can I just replace that?
If you are talking about the pressure sensor, then yes you can just replace the sensor. Go to Freightliner and take the sample. There are a few different styles and they look the same. So a sample is better
Hey bro I have a 2009 cascadia and I have a leak from the middle sensor do I have to replace the whole part or just that one sensor
You should be able to just replace the sensor.
How many hours will a dealer charge for this? Great video.
I imagine a dealer will charge their minimum which is usually 2 hours but I am sure it will be more in the ball park of 3-4 hours.
About to replace mine tomorrow after I stop
Pretty simple. You will do fine. Take you time with the sensors.
Take pictures just in case so you remember where they go.
Will a bad pass through / censor cause you to hear air hissing from your tractor parking brake valve, when it is pushed in? I just replaced the valve assembly in the dash, but still getting the hissing sound. Only when the tractor valve is pushed in.
Check down at the manifold. There are pressure sensors that tend to leak. Remove the covers at the pedal. Release the brakes, make sure the truck is secure, and use some soapy water and look for bubbles.
If it's a plastic air fitting on a Cascadia it will need to be replaced... lol
Just a heads up. I didn't need to remove accelerator and you don't need a drill.
Good to know 👍🏼
Sweet thank you
Glad you liked the video.
@@CarlosDieselElectric Loved it!
My 2017 cascadia has air leak right after the gear box engine side but can’t find it even with splashing soap please share if someone has the same problem
Check inside or along the chassis
Is the brass part you pull out replaceable I accidentally broke mine
The brass is part of the manifold. You are probably going to have to replace the entire manifold. I don’t believe they sell the brass by itself
Would the location be the same on a 2021 cascadia ?
Great question, I have only had a few 2020-2021 trucks come through my shop but never noticed. I imagine they have a similar set up.
Hey man I’m not even sure if this is relevant but I keep losing a lot of air from my valve brakes. I’m not sure why but they were leaking air when I stopped to fill my tank and now the alarm just keeps sounding but the gauges are at 100. Hopefully you see this in time any suggestions?
The low air pressure sensor is located on the air manifold. There are 2 sensors,
As far as the air loss, is this when the truck is sitting? Is it the air valve on the outside firewall on the driver side?
Check the breeder or the governor... had the same problem psi on the 2 gages was 100 psi I replaced the governor problem fix
@@CarlosDieselElectric I have a air leak at both air pressure sensor
Or the air is building up and not cycling through
Will this make the “transmission low air” and also only leak air if the truck is running?
My 2016 cascades losing secondary air while driving, it drop down to 90 then 125 and keeps doing it every couple of minutes, when I stop to check for leak I can’t hear anything, it only happens when pulling heavy load , bobtail or empty is fine , any idea what should I check for thanks
You can do a test using the software to see if the V-Pod is leaking.
Also, there is a check valve on an air tank. Pretty inexpensive to replace. Usually on the driver side near the number 2 axle
Did u ever find out the problem? I’m having the same problem. 2015 cascadia air leak out the secondary tank every 2 mins and air dryer purges. Sometimes it doesn’t leak at all but soon as I hit a bump or drive on rough road it will start leaking also when loading or unloading at Wearhouse secondary air tank lose pressure. I have changed air bags and fixed all the air leaks possible but still no luck.
@@jsingh3052 yes I replace all 4 airbags and leveling valve , truck seems to be fine now
Can u explain the air leak a little better. The yellow line. On mine is leaking on the engine side
The air leak is typically at the manifold, inside it fails but you can try removing the air line and cutting the end around 1/4 inch then reinsert. See if that works if not the manifold will need to be replaced.
Did you cut your lines clean first? Or did you just say manifold?
Cut about 1/4 inch off before installing the lines. The lines will have a small crease and can let air leak even after you replace the manifold.
This video is giving me nightmares. Had to do this 8 months ago, it was not fun.
I got to deal with this, i can hear the leak inside the cab it has to be one of those lines
Just pull the panel near the accelerator pedal. That will give you access.
how you figured out that was bad
Air lines were leaking, if you hear the lines leaking you can remove the line and cut the tip, about a 1/4 inch and then reinstall. If it stops then you are good to go. If not the. You have to replace the air manifold assembly
How much is the part and labor ? Thanks
Part costs about $200 and labor is about 1-2 hours.
@@CarlosDieselElectric thank you very much
@@CarlosDieselElectric 1-2 hours labor x $125
My cascadia keeps burning up trailer brakes. They can't figure it out.
Check the valves at the rear of the tractor. You have the blue and red air lines.
Are the brakes locking up? Are they dragging?
The brakes on almost every trailer drag to the point of smoking. The cab brake lights come on, and so do the trailer brake lights when no one is in the truck. Every time you apply the brakes the air gets trapped and the brakes on the trailer just drag. This has been going on for over a year. No one can figure it out.@CarlosDieselElectric
@@RichardLuna2025 the quick release valve on the truck. Just behind the 5th wheel.
My shit is leaking right where the sensor is. Can I just replace the sensor?
The sensor usually has a small amount of Teflon on the treads. But the sensor is replaceable if you need to replace it.
Why not just replace the sensor?
If I remember correctly, the issue was the fittings where the air lines goes in. The collar would no longer seal correctly. There is no repair option, only replacement.
So trying to just replace the park sensor wont work.is that what you're saying.. ..cause one of my trucks is leaking bad from that sensor..
Ray Mtz if you have an air leak from the sensor I would definitely try that first.
@@CarlosDieselElectric ok will try it thanks ..
In a Colombia 2005 I replace the O-rings inside of each line and it working instead of buying the whole piece..I spend only $12 in a set of oring in harborfreight tools
🤙🏽🤙🏽🤙🏽🤙🏽🤙🏽🤙🏽🤙🏽🤙🏽🤙🏽 Thanks 🙏🏽
Jon you are welcome.
my friend you are throwing your money in the trash just replace the o-rings
A whole lot of talking just demonstrate how to do its do its
Alright. Appreciate the feedback. I try to make the videos quick and to the point.
Don't listen to that fool you did this video perfect and explaining 👌 even answering people's questions comments. Your talking explaining is what helps us most very detailed.