FORD issued a recall on the F750, and F650 models

On certain vehicles equipped with air brakes and rear air suspension, the rear service brake and parking brake air lines could contact the rear axle housing during vehicle operation, causing the lines to wear. Over time, this could result in an air leak in the service or parking brake lines. An air leak in the parking brake lines could result in inadvertent parking brake application. An air leak in the rear service brake line could affect rear service brake performance, potentially resulting in a loss of rear service brake function. These conditions could increase the risk of crash causing injury and/or damage to property: Correction: Dealers will inspect air lines for damage and repair as necessary, as well as install revised rear brake chambers.