{"nhtsa_id":10226939,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-12-02","date":"2022-11-21","document_id":"TSB 22-2444","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER; POWER TRAIN:DRIVELINE:DRIVESHAFT; POWER TRAIN","mfr_system":null,"summary":"This article supersedes TSB 22-2271 to update the vehicle model years affected. Some 2015-2023 Transit vehicles equipped with rear wheel drive (RWD), single rear wheel (only), and U-joints at the transmission flange and rear driveshaft may experience a boom/hum/moan noise from the rear while driving. This noise is most noticeable at highway speeds: 112-121 km/h (70-75 mph) for 4.10 axle ratio 121-128 km/h (75-80 mph) for 3.73 axle ratio 136-145 km/h (85-90 mph) for 3.31 axle ratio The noise may also be present to a lesser degree at roughly half of the noted speeds. This may be due to a 2nd order driveline frequency transmitted through the rear driveshaft, rear axle and into the body through the leaf springs. To correct the condition, follow the Service Procedure to install a driveshaft torsional damper. NOTE: The torsional damper will not resolve a vibration.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10226939-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10226939-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10226939","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"driveshaft","name":"Driveshaft","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"TRANSIT","year_from":2015,"year_to":2023,"match":"exact","vehicle_ids":["2015_ford_transit","2016_ford_transit","2017_ford_transit","2018_ford_transit","2019_ford_transit","2020_ford_transit","2021_ford_transit","2022_ford_transit","2023_ford_transit"]}],"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":[]}