{"nhtsa_id":620024,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-07-09","date":"2001-03-09","document_id":"MB221007","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"SUBJECT REGARDING INJECTION TIMING CONTROL INNER TONE WHEEL USED IN THE TIMING ADVANCE UNIT OF MIDR 06.02.26 L510/511, M510/511, L70/711 AND M710/711 ENGINES, A REDESIGNED REPLACEMENT TONE WHEEL IS AVAILABLE THROUGH THE MACK PARTS SYSTEM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620024","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MACK","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"MIDR","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":[]}