{"nhtsa_id":604380,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-04-27","date":"1999-02-19","document_id":"SB622019","mfr_campaign":null,"replaces":null,"component":"STRUCTURE","mfr_system":null,"summary":"A CONDITION MAY EXIST WHICH CAUSES THE HOOD TO CRACK IN THE UPPER CORNERS OF THE RADIATOR OPENING ON AN RD600 MODEL CHASSIS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/604380","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"RD","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}