{"nhtsa_id":608272,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-12-01","date":"1999-03-01","document_id":"SF171A","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:MANUAL TRANSMISSION","mfr_system":null,"summary":"FIELD SERVICE MODIFICATION SF171A / SC141A IS BEING INITIATED TO MODIFY FREIGHTLINER CUSTOM CHASSIS VEHICLES. THE CLUTCH DISK ON MT35 CHASSIS MAY CAUSE PREMATURE FAILURE OF THE SYNCHRONIZERS INSIDE THE EATON ES4205 MANUAL TRANSMISSION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/608272","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"manual-transmission","name":"Manual transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"MT35","year_from":1996,"year_to":1998,"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":[]}