{"nhtsa_id":606635,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-08-30","date":"1999-06-22","document_id":"SB232012","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM","mfr_system":null,"summary":"SUBJECT REGARDING AN IMPROVED COOLANT RECOVERY BOTTLE VENT CAP ARRANGEMENT AVAILABLE FOR CERTAIN MODEL CHASSIS THAT MAY BE EXPERIENCING COOLANT LEAKAGE DUE TO EXCESSIVE AGITATION OF COOLANT INSIDE THE RECOVERY BOTTLE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/606635","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CH","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"MACK","model":"CX","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"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":[]}