{"nhtsa_id":10206507,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-01-18","date":"2021-12-10","document_id":"TSB210266-121020","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution of closed crankcase ventilation (CCV) breather assembly lower bearing corrosion, damage, and/or debris not allowing the CCV motor to achieve functional speed.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10206507-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10206507-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10206507","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"pcv","name":"Crankcase ventilation (PCV)","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX12","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":[]}