Challenger Tractors MT 645E, MT 655E, MT 665E, MT 675E, MT 685E Repair Service Manual (ACT0004360) Price listed in US Dollar: $49.00 Complete service repair manual with Electrical Wiring Diagrams for Challenger MT600E Series Tractors (MT 645E, MT 655E, MT 665E, MT 675E, MT 685E), with all the technical information to maintain, d Read more about Challenger Tractors MT 645E, MT 655E, MT 665E, MT 675E, MT 685E Repair Service Manual (ACT0004360)