Part of the John Deere Repair Manuals.
If your tractor is a John Deere 2020, this is the coverage that fits: TM1044, the factory John Deere 2020 technical manual PDF, 260 pages spanning gasoline and diesel engines, collar shift transmission, Hi-Lo, reverser, and both continuous and independent PTO. Wiring diagrams trace the charging, starting, ignition, and lighting circuits, while hydraulic schematics map the rockshaft, steering, and selective control valve circuits through diagnosis and testing. The hydraulic section alone fills roughly a quarter of the book. Set the distributor point gap between 0.018 and 0.022 inch, and pull rear hub bolts to 300 ft-lb before a wheel works loose in the field. A guessed torque on a flanged axle costs you a second teardown; the spec costs nothing to look up. Download the bookmarked PDF, print the section for the job, and let those pages take the grease on the bench while the master copy stays clean.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-24 | Specifications, Predelivery, Delivery, And After-Sale Services, Tune-Up |
| Engine | 25-70 | General Information and Diagnosis, Cylinder Head, Valves, And Camshaft, Cylinder Block, Liners, Pistons, And Rods |
| Fuel System | 71-84 | Diagnosing Malfunctions, Diesel Fuel System, Gasoline Fuel System |
| Electrical System | 85-118 | Information and Diagrams, Charging Circuit, Starting Circuit, Ignition Circuit, Lighting and Accessory Circuits |
| Power Train | 119-186 | Clutches, Hi-Lo Shift Unit, Reverser, Collar Shift Transmission, Differential, Final Drive, Continuous and Transmission PTO, Independent PTO |
| Steering and Brakes | 187-188 | Steering Valve, Steering Piston, Steering Shaft, Brake Valve, Brake Piston, Equalizing Valve |
| Hydraulic System | 189-256 | General Information, Diagnosis, And Tests, Miscellaneous Hydraulic Components, Hydraulic Pumps, Steering Systems, Hydraulic Brakes, Rockshaft System |
| Miscellaneous | 257-260 | Front Axle |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Front hub bolts (Tires 6.00-16 or smaller) | 85 ft-lb | p. 8 |
| Front hub bolts (Tires larger than 6.00-16) | 100 ft-lb | p. 8 |
| Points | 0.020 in. | p. 14 |
| Fan belt adjustment | 3/4-inch deflection, 20 lb. force | p. 24 |
| Distributor point gap | 0.018 to 0.022 in. | p. 14 |
| Spark plug size | 14mm, 3/4-in. reach | p. 115 |
| Spark plug gap | 0.025 inch | p. 115 |
| Engine Cylinder Head Cap Screw Torque | 110 ft-lbs | p. 14 |
| Hydraulic System Standby Pressure | 2250 psi | p. 6 |
| Engine Oil Pressure (at high idle) | 45-65 psi | p. 15 |
| Transmission Pump Flow | 6 gpm at 2500 rpm | p. 16 |
| Main Hydraulic Pump Standby Pressure | 2200 to 2300 psi | p. 16 |
