John Deere POWERTECH 4.5L & 6.8L Diesel Engines Component Technical Service Repair Manual CTM331 - PDF

John Deere PowerTech 4.5L & 6.8L Diesel Engine Repair Manual – CTM331 Keep your John Deere PowerTech diesel engines running at peak performance with this official CTM331 Component Technical Manual. Specifically designed for 4.5L and 6.8L engines, this downloadable PDF covers detailed service and repair instructions used by certified John Deere technicians. Whether you're a mechanic, technician, or a farmer maintaining your own machinery, this manual provides step-by-step guidance, technical specs, and professional-grade illustrations. Contents: SECTION 01—General InformationGroup 000—SafetyGroup 001—Engine IdentificationGroup 002—FuelsSECTION 02—Repair and AdjustmentsGroup 090—Electronic Fuel System Repair andAdjustmentsGroup 110—Electrical Engine Control Repair andAdjustmentSECTION 03—Theory of OperationGroup 130—Electronic Fuel System OperationGroup 140—Electronic Control System OperationSECTION 04—DiagnosticsGroup 150—Observable Diagnostics and TestsGroup 160—Trouble Code Diag