{"nhtsa_id":10117853,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-09-20","date":"2017-07-11","document_id":"SIL 659","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT","mfr_system":null,"summary":"This service information letter (SIL) requires installation of an improved hydroelectric lower control station selector valve. Earlier versions of the valve can fail to shift or operate in some situations.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10117853-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10117853-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10117853","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ALTEC","model":"AA","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"AM","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"AN","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":[]}