I have 2017 Western Star with DD15 power train. When the service brake is applied I hear and feel air escaping from under the steering column. This happens with bobtail only or with trailer attached. The brake pods seem to be in good shape upon inspection. I'm running short on ideas what could be causing this, any feedback would be appreciated.
Service brake air leak, need some suggestions
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by ShortCircuit, Jul 19, 2019.
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Found the issue in case someone finds this thread in the future. Air leak was coming from air brake lights switch, a $20 part but a pain in the ### to chase down behind dashboard assemblies.
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stillwurkin Thanks this.
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