Air Loss Question- Is This The Culprit?

[Bhpdbrad]

Just driving the truck (M935A2) to meet a shipper - when the Low Air light/horn activate. I see the primary tank reading is down to below 59psi and not building.

I only had a mile to go so I nursed it to my destination. With the braking action the pressure decreased more and I could feel the loss of braking efficiency now. So glad I could drive slow to the stop.

Once there, I looked under the truck and I hear and feel a lot of air coming out of the bottom of this...
Whats going on here?
Any help or advice is appreciated. I plan on just having the truck broght to a service place but I'm not sure it will build enough air to get it off the flatbed now.

There have been no other issues - so I'm pretty sure this is the source. But I won't be surprised when I get told "Hey newbe - that's supposed to do that!"

its its on the truck now.

Im in Ohio - coming to CA!

 

[simp5782]

Pull the valve and clean it or bypass it to get it off the truck. There are threads just recently about this. Or throw a new dryer on it. And that 935A2 is about a 2ft shorter than it should be and missing its 7ftx17ft box

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[Bhpdbrad]

Pull the valve and clean it or bypass it to get it off the truck. There are threads just recently about this. Or throw a new dryer on it. And that 935A2 is about a 2ft shorter than it should be and missing its 7ftx17ft box

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You're right... Just saw the typo.. My fat fingers make up stuff when typing.

Thanks for the info on the air dryer. I have read the other threads. Just never saw it on my truck. Now I now. I'll try tapping it free first. Then cleaning It. Hope that'll take care of it.

 

[simp5782]

You can also get a air line and put a gladhand on each end. Have the semi truck feed you air so you can get it off the rruck

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[infidel got me]

When you do get your truck settled in, I would recommend just replacing the air drier. Their cheap enough and that's one less part you have to worry about.

 

[sandcobra164]

http://www.steelsoldiers.com/showthread.php?154619-Air-Dryer

Read this thread to learn what I have learned concerning this problem first hand. Many replace the air dryer or clean the expello valve and that fixes the problem. I replaced the air dryer, the governor, and still could not build air. I had an oddball problem! From my limited experience, I say disconnect the signal line, the small black on that feeds into the passenger side base of the dryer and see what happens.

Joseph