{"nhtsa_id":10110370,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-04","date":"2017-02-10","document_id":"FSB 213-002","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Exhaust Rocker Compression Brake Piston, Repair, For MACK CHU, CXU, GU, and TD trucks built from 01/01/2007 to present, a repair procedure and new tools have been created to repair of the exhaust rocker compression brake pistons. In some instances the exhaust rocker piston cap screw may become loose and back out causing loss of engine compression, or a mechanical injector Diagnostic Trouble Code.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10110370-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10110370-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10110370","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CHU","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"CXU","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"TD","year_from":null,"year_to":null,"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":[]}