System: brakes; air system; reservoir.vehicle description: heavy duty trucks equipped with 2875 cubic inch primary air reservoirs.note: owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time, should contact freightliner at 1-503-735-8000. Also contact the nationalhighway traffic safety administration's auto safety hotline at 1-800-424-9393.