{"nhtsa_id":10180152,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-26","date":"2020-09-23","document_id":"CALFTL20-003REV","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; EQUIPMENT","mfr_system":null,"summary":"Revised Customer Advisory Letter for Fan Hub Fastener Inspection in Business Class M2 Vehicles with DD5 Engines. The revision has updated inspection procedures. DTNA has determined that some GHG17 Detroit DD5 engines will need to have the fan hub bolts inspected for correct torque.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180152-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180152-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10180152","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"cooling-fan","name":"Cooling fan","parent":"engine"},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"BUSINESS CLASS M2","year_from":2018,"year_to":2021,"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":[]}