Medium and Heavy Trucks

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Air dryer started purging every minute and a half or so. No
Air dryer started purging every minute and a half or so. No loss in pressure. Swapped the air dryer and new governor. Started doing that I'm very cold weather. Still doing the same thing after new par… read more
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This is not a duplicate question. I have a 2004 Freightliner
This is not a duplicate question. I have a 2004 Freightliner century and it has a problem that the air valve that goes under the 5th a lot of hoses go to it is leaking from the round exhaust port when… read more
Daniel Wilson
Daniel Wilson
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Air Leak. 2004 Freightliner day cab with Detroit engine.
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I Have a 2007 Freightliner Classic XL. I am having a problem
Hi I Have a 2007 Freightliner Classic XL. I am having a problem with the air system that just started today. With both of the dash valves pulled out(tractor and trailer) and I step on the brake pedal,… read more
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I have a 2009 mack pinnacle, when I push on the brake pedal
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Wayne, this is Justina. We have a 2008 International Prostar
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2006 FREIGHTLINER M2 BUSINESS CLASS IS LEAKING AIR AT THE REAR
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I have just installed a cylinder kit to my fuso fighter
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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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My air brakes pump up to 135 psi but when I release park brakes
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have a 95 f800 with lucas girling brakes pedal is hard like
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Business Class M2 Freightliner 2006 when you release the parking
Business Class M2 Freightliner 2006 when you release the parking brakes the park brake indicator light stays on and the buzzer is heard only when the vehicle is in motion. the air pressure is running … read more
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Have an 04 Freightliner Century with a Detroit 60 series. The secondary tank keeps dumping air. I have replaced the cluth fan (first diagnosis) the Turbo (second diagnosis) and the Compressor (the thi… read more
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