Medium and Heavy Trucks

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I am working on a Freightliner M2 class truck 2012. It has
I am working on a Freightliner M2 class truck 2012. It has the Cummins C series engine with a single cylinder Wabco(###) ###-####compressor and D2 governor. The air system was only building to 115 and… read more
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My 1988 flc freight liner tractor suddenly won't build air in brake system … read more
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I have 2007 International 9400i Cummins isx 435st. It's not
I have 2007 International 9400i Cummins isx 435st. It's not building up any air pressure. Changed the compressor, governor and dryer, still the same thing. The dryer an intermittent ticking coming fro… read more
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My secondary air gauge isn't building pressure. 2015
I checked the hoses under the hood and no air is flowing but the primary is filling normal … read more
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I checked the wet tank for a check valve and it doesn't have
Second opinion] Hello I checked the wet tank for a check valve and it doesn't have one and I didn't see any sign of one on the dryer from the dryer to the compressor or the dryer to the wet tank how m… read more
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I have a 2005 Freightliner Columbia not building air
I have a 2005 Freightliner Columbia not building air pressure to the second tank also. I have put in a new compressor, governor, and check valve. Don't find any leaks anywhere... … read more
Daniel Wilson
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2005 mack granite e7 wont build air. I installed new
2005 mack granite e7 wont build air. I installed new compressor, new govner, new air dryer. Will not build air at idle. Air lines are not kinked. No regulators going into tanks. … read more
Bradey V
Bradey V
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My 2015 Freightliner cascadia evolution have air pressure
My 2015 Freightliner cascadia evolution have air pressure problem ...so basically when i start my truck it build up pressure all the way to 135 psi(both gauges) then during driving slowly (when im app… read more
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I have a air pressure problem on my Mac truck. It does not
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Eng 0 abs 11 fail 14 spn 810 code. Also secondary air tank
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I recently changed an air compressor on a 2016 freightliner
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I have 2010 Freightliner cadcadia dd15 , having problems with
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I have a problem with a Kenworth T600, Its a 1997 tractor trailer
I have a problem with a Kenworth T600, Its a 1997 tractor trailer truck. The compressor does not go into unloaded stage long enough to cool and the air dryer unloads about every 30 seconds. The compre… read more
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Freightliner M2 business class.... air pressure wont pass 80psi at idle with new compressor, new governor, air dryer , rear brake chamber...if I rev the truck it wld build and purge ... but after the … read more
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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