Complete Diagnositcs and Test Service manual with Electrical Wiring Diagrams for John Deere 4WD Loaders Model 644K with Engines 6068HDW80 (T3), 6068HDW83 (
Complete Operation and Test manual with Electrical Wiring Diagrams for John Deere 4WD Loaders 644H & Material Handler 644H MH, with all the service information