{"nhtsa_id":11034101,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-06-26","date":"2026-06-11","document_id":"TSIB 26-05","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This bulletin introduces an optional product improvement to the A/C compressor drive system for coaches equipped with a Cummins X12. The improved pulley system is available for customers who wish to reduce noise and vibration characteristics and may be installed at the customer’s discretion.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034101-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034101-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034101","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MCI","model":"D4000","year_from":2018,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D4000ISTV","year_from":2018,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D4005","year_from":2018,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D4020","year_from":2026,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D4020ISTV","year_from":2024,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D4500","year_from":2018,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D4505","year_from":2018,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D4520","year_from":2020,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D45CRT","year_from":2024,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"D45CRTLE","year_from":2018,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"J4500","year_from":2018,"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":[]}