{"nhtsa_id":10050559,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-02-04","date":"2012-11-27","document_id":"TSB-120261","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS","mfr_system":null,"summary":"CUMMINS: DUE TO A LEAKAGE OF COOLANT FROM TORQUE CONVERTER COOLANT HOSE, AND SQUARE ADAPTER AND TEE FITTING ARE USED IN (CC) OPTIONS, WHICH CAUSES RUBBING OF AIR COMPRESSOR PLUMBING OPTION AGAINST COOLANT HOSES, TWO ADAPTERS WERE APPROVED, ONE SQUARE AND ONE HEXAGONAL (HEXAGONAL WILL NOT CUT HOSE). ALL HOSE LINES SHOULD BE INSPECTED FOR DAMAGES AND REPLACED, IF NEEDED. NO MODEL YEARS ARE LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10050559","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"CUMMINS","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":[]}