{"nhtsa_id":10230478,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-01-19","date":"2023-01-19","document_id":"SIL 3033","mfr_campaign":null,"replaces":null,"component":"SUSPENSION; EQUIPMENT","mfr_system":null,"summary":"Altec has learned that on certain AT37-G aerial devices built from November 2007 to April 2018, the rear torsion bar swing arm can interfere with the long runner channels under the body as the torsion bar rotates during road travel. The interference can cause wear issues and can cause welds on the body mounting angles or cross members to develop cracks.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10230478-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10230478-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10230478","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ALTEC","model":"AERIAL DEVICE","year_from":2014,"year_to":2018,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"AT37-G","year_from":2007,"year_to":2013,"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":[]}