Challenger Tractors MT645C, MT655C, MT665C, MT675C, MT685C, MT645D, MT655D, MT665D, MT675D, MT685D Repair Service Manual (4346278M3) Price listed in US Dollar: $49.00 Leave this field blank Complete service repair manual with Electrical Wiring Diagrams for Challenger Tractors MT600C series (MT645C, MT655C, MT665C, MT675C, MT685C), MT600D series (MT645D, MT655D, MT665D, MT675D, MT685D) Read more about Challenger Tractors MT645C, MT655C, MT665C, MT675C, MT685C, MT645D, MT655D, MT665D, MT675D, MT685D Repair Service Manual (4346278M3)