martysantic Report post Posted August 5, 2024 2017 Berkshire Class A. Seems like it is taking longer and longer for the air pressure system to fill the air bags and for the pop off valve to pop, even at fast idle. In fact on the last start I got near max pressure and the pop off valve never opened. It took a short drive to get to the max pressure. Is there a spec on how long it should take to pressurize to max/normal pressure? Called Freightliner and they said call Cummings, called Cummings and they said it is a Freightliner issue. Any suggestions I should have the techs look at during next service visit would be appreciated. Share this post Link to post Share on other sites
desertdeals69 Report post Posted August 5, 2024 change the filter on the drier. Share this post Link to post Share on other sites
desertdeals69 Report post Posted August 17, 2024 Hello, I am testing to see if my profile updated after I made a change earlier today. Share this post Link to post Share on other sites
