{"nhtsa_id":629411,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-04-02","date":"2002-02-26","document_id":"P1546","mfr_campaign":null,"replaces":null,"component":"STRUCTURE","mfr_system":null,"summary":"SUBJECT REGARDING CRANKCASE BREATHER IMPELLER WHEEL RETAINING SCREW TORQUE, FREEDOM CHASSIS MODEL.*JB","document":null,"url":"https://open.wenmarpro.com/bulletins/629411","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MACK","year_from":null,"year_to":null,"match":null,"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":[]}