{"nhtsa_id":10120538,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-10-25","date":"2017-09-28","document_id":"FSB 237-020rev","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER","mfr_system":null,"summary":"MACK CHU, CXU, GR, GU, and PI trucks built from 2009 to 2017 and equipped with MP7, MP8, and MP10 engines (EM-USA10, EM-USA14, and EM-USA17), will require a new torque specification for the Unit Injector Yoke Hold-Down Bolt. Effective immediately, the torque value in step 4 has changed to 25 +5/-0 Nm (18 +4/-0 ft-lb).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10120538-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10120538-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10120538","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"torque-converter","name":"Torque converter","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CHU","year_from":2010,"year_to":2018,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"CXU","year_from":2010,"year_to":2018,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":2010,"year_to":2018,"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":[]}