This comprehensive technical service repair manual is your essential guide to maintaining, troubleshooting, and repairing John Deere 2440 and 2640 2WD or MFWD tractors with serial numbers 341000 and above. The manual provides detailed instructions and high-quality illustrations to help you confidently navigate every aspect of these tractors. Inside, you'll find in-depth coverage of numerous systems, including:

**General Information:** This section covers essential information such as specifications, special tools required for various tasks, pre-delivery, delivery, and after-sale services, tune-up procedures, lubrication schedules, and separation guidelines.

**Engine Repair:** This section focuses on the engine, addressing topics like cylinder head, valves, camshaft, timing gear train, cylinder block, liners, pistons and rods, crankshaft, main bearings and flywheel, lubrication system, and cooling system.

**Fuel and Air Repair:** This section provides guidance on the air intake system, diesel fuel system, and control linkage, enabling you to address potential issues in these critical components.

**Electrical Repair:** This section covers the charging circuit, starting circuit, lighting and accessory circuits, instrument circuits, and outlet socket diagnosis.

**Power Train Repair:** This section delves into the powertrain, offering detailed information on clutches, HI-LO shift unit, reverser, collar shift transmission, differential, final drives, and PTO.

**Steering and Brakes Repair:** This section focuses on the steering and braking systems, providing instructions for steering components, hydraulic brakes, and auxiliary brakes.

**Hydraulic Repair:** This section covers miscellaneous hydraulic components, hydraulic pumps, rockshaft and implement hitches, and selective control valve, breakaway coupler, and remote cylinder maintenance.

**Miscellaneous Repair:** This section includes information on front axles and wheels.

**Operator Station Repair:** This section covers the operator station, providing information on the seat, ROLL-GARD, and other miscellaneous parts.

**Engine Operation and Tests:** This section offers insights into engine system operation and diagnoses.

**Fuel and Air Operation and Tests:** This section provides details on the operation and diagnosis of the air intake system, diesel fuel system, and control linkage.

**Electrical Operation and Tests:** This section covers the operation and diagnosis of the charging, starting, lighting, accessory, instrument, and outlet socket circuits.

**Power Train Operation and Tests:** This section covers the operation and diagnosis of the clutch, transmission, HI-LO shift unit, reverser, differential, final drive, and PTO.

**Steering and Brakes Operation and Tests:** This section covers the operation and diagnosis of the power steering, hydraulic brakes, and auxiliary brake systems.

**Hydraulic Operation and Tests:** This section provides details on the operation and diagnosis of the hydraulic system, hydraulic pumps, rockshaft and implement hitches, selective control valve, breakaway couplers, and remote cylinders.