{"nhtsa_id":10177605,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-07-31","date":"2020-07-28","document_id":"SBW31-016","mfr_campaign":null,"replaces":null,"component":"SUSPENSION:REAR; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY","mfr_system":null,"summary":"Western Star Bulletin for Non-Airliner Rear Suspension Crossmember Fastener Change. With the start of production on March 2, 2020, the fasteners used to assemble the non-Airliner rear suspension (bogie) crossmember have changed. The rear suspension bogie crossmember gussets to the C-channel will be assembled with 5/8–18 fasteners. This change includes a revision to a higher friction nut that requires an increase in tightening torque. The new higher friction nut can be identified by its green color.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10177605-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10177605-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10177605","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4700","year_from":2010,"year_to":2021,"match":"exact","vehicle_ids":["2010_western-star_4700","2011_western-star_4700","2012_western-star_4700","2013_western-star_4700","2014_western-star_4700","2015_western-star_4700","2016_western-star_4700","2017_western-star_4700","2018_western-star_4700","2019_western-star_4700","2020_western-star_4700","2021_western-star_4700"]},{"make":"WESTERN STAR","model":"4800","year_from":2010,"year_to":2021,"match":"exact","vehicle_ids":["2010_western-star_4800","2011_western-star_4800","2012_western-star_4800","2013_western-star_4800","2014_western-star_4800","2015_western-star_4800","2016_western-star_4800","2017_western-star_4800","2018_western-star_4800","2019_western-star_4800","2020_western-star_4800","2021_western-star_4800"]},{"make":"WESTERN STAR","model":"4900","year_from":2010,"year_to":2021,"match":"exact","vehicle_ids":["2010_western-star_4900","2011_western-star_4900","2012_western-star_4900","2013_western-star_4900","2014_western-star_4900","2015_western-star_4900","2016_western-star_4900","2017_western-star_4900","2018_western-star_4900","2019_western-star_4900","2020_western-star_4900","2021_western-star_4900"]},{"make":"WESTERN STAR","model":"5700","year_from":2010,"year_to":2021,"match":"exact","vehicle_ids":["2010_western-star_5700","2011_western-star_5700","2012_western-star_5700","2013_western-star_5700","2014_western-star_5700","2015_western-star_5700","2016_western-star_5700","2017_western-star_5700","2018_western-star_5700","2019_western-star_5700","2020_western-star_5700","2021_western-star_5700"]},{"make":"WESTERN STAR","model":"6900","year_from":2010,"year_to":2021,"match":"exact","vehicle_ids":["2010_western-star_6900","2011_western-star_6900","2012_western-star_6900","2013_western-star_6900","2014_western-star_6900","2015_western-star_6900","2016_western-star_6900","2017_western-star_6900","2018_western-star_6900","2019_western-star_6900","2020_western-star_6900","2021_western-star_6900"]}],"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":[]}