{"nhtsa_id":11033568,"type":"other","type_name":"Other","date_added":"2026-06-04","date":"2026-03-25","document_id":"FDM-SVC-044","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"This bulletin provides instructions to install a check valve in the chute return hydraulic circuit to prevent fluid back flow through the chute manifold if a chute up or down hose fails, and install a shut-off valve on the fan manifold to turn off flow of hydraulic oil to the chutes and water pump.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033568-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033568-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11033568","components":[],"codes":[],"topics":[],"vehicles":[{"make":"OSHKOSH","model":"S-SERIES","year_from":2019,"year_to":2025,"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":[]}