{"nhtsa_id":10085662,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-12-07","date":"2015-11-24","document_id":"T1288A","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS","mfr_system":null,"summary":"THIS TEMPORARY REPAIR PRACTICE IS FOR CERTAIN ISB 6.7 CM2250 ENGINES IN SCHOOL BUS APPLICATIONS BUILT WITH OPTION CF9235. IT IMPROVES THE BELT LENGTH FOR BETTER FRONT END ACCESSORY DRIVE SYSTEM PERFORMANCE.","document":null,"url":"https://open.wenmarpro.com/bulletins/10085662","components":[{"id":"engine","name":"Engine","parent":null},{"id":"drive-belt","name":"Drive belts","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISB6.7","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":[]}