{"nhtsa_id":10185927,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-01-28","date":"2021-01-08","document_id":"CALShackle","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION; EQUIPMENT; STEERING","mfr_system":null,"summary":"Customer Advisory Letter for Threaded Pin and Bushing. Western Star Trucks built in 2020 with threaded pins and bushings have been found with loose shackles on the rear of the steering axle suspension. The pins are seizing from lack of lube causing the shackle to rotate on the pin.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10185927-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10185927-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10185927","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"steering","name":"Steering","parent":null},{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4700","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_western-star_4700"]}],"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":[]}