{"nhtsa_id":10052058,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-05-09","date":"2013-01-16","document_id":"TIB-45-048","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS","mfr_system":null,"summary":"KENWORTH: AN ERROR IN MANUFACTURING OF COOLANT PUMP PULLEY RESULTED IN A DECREASE IN PULLEY STRENGTH. MODELS MX-13 ENGINE. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10052058","components":[{"id":"engine","name":"Engine","parent":null},{"id":"drive-belt","name":"Drive belts","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"KENWORTH","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":[]}