{"nhtsa_id":11031313,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-15","date":"2026-04-10","document_id":"SIL-3273","mfr_campaign":"SIL-3273","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"Altec has received notification from Parker Chelsea, the manufacturer, of an issue with some of their 281 and 890 Series PTOs. An unintended restriction in lubrication flow may produce elevated back pressure in cold-start scenarios, leading to partial engagement of the clutch. Once the vehicle reaches normal operating temperature, the clutch drag will abate. In extreme cases, repeated cold starts may result in clutch disk damage and failure to engage when activated.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031313-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031313-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031313","components":[],"codes":[],"topics":[],"vehicles":[{"make":"ALTEC","model":"AERIAL DEVICE","year_from":2007,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"AERIAL DEVICE","year_from":2012,"year_to":2018,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"AERIAL DEVICE","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"AERIAL DEVICE","year_from":2023,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"DIGGER DERRICK","year_from":2004,"year_to":2004,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"DIGGER DERRICK","year_from":2010,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"DIGGER DERRICK","year_from":2024,"year_to":2026,"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":[]}