{"nhtsa_id":10173923,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-04-20","date":"2020-03-14","document_id":"C2299","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This campaign is being issued to address suspect valve rocker assemblies on certain ISX15 CM2250 SN and ISX CM871 E engines. This field action provides authorization for certified repair locations to replace the intake and exhaust valve rocker assemblies on eligible engines fitted with a modified rocker lever design that directly supplies oil to the pin and roller interface.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173923-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173923-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10173923","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"X15","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":[]}