![John Deere 904 1054 1204 1354 Operators Manual [Tractors]](https://youfixthis.com/wp-content/uploads/2012/02/Manual_Download-300x300.jpg)
Part of the John Deere Repair Manuals.
This is the complete John Deere factory technical manual (TM126919) for the 1023E, 1025R and 1026R Compact Utility Tractors. Across 1,399 pages it documents every service task on these sub-25hp tractors: rebuilding the Yanmar 3-cylinder diesel in each variant, servicing the hydrostatic transmission and mechanical front wheel drive, repairing the rear PTO and 3-point hitch, diagnosing and testing the full hydraulic system with pump pressures and schematics, and tracing the electrical system with wiring harness diagrams. Operation, tests and adjustment procedures mirror what a John Deere dealer technician follows, with the fluid capacities, torque values and test pressures specified so a repair comes out to spec the first time.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | Safety, General Specifications, Fuel and Lubricants, Serial Number Locations, Features and Accessories | |
| Engine Repair | Engine Remove/Install, Cylinder Head, Cooling System | |
| Fuel and Air Repair | Fuel System, Air Intake and Exhaust Systems, Speed Control Linkage | |
| Electrical Repair | Battery, Starter and Alternator, Electrical System Components, Wiring Harness | |
| Power Train Repair | Hydrostatic Transmission, Rear PTO Driveshaft, Differential, Final Drives, Mechanical Front Wheel Drive | |
| Steering and Brake Repair | Hydrostatic Power Steering Repair, Internal Wet Disk Brake Repair | |
| Hydraulics Repair | Hydraulic Pump and Filter, Rockshaft, Selective Control Valve | |
| Miscellaneous Repair | Wheels, 3-Point Hitch, Hood, Mid-Mount Lift | |
| Operator Station Repair | Seat and Support, Roll-Gard, Operator Platform, Fenders | |
| Operational Checkout Procedures | Pre-Delivery Operational Checkout | |
| Engine Operation, Tests and Adjustments | Component Location, Theory of Operation, Diagnosis, Tests and Adjustments | |
| Electrical System Operation, Tests and Adjustments | Component Location, Theory of Operation, Diagnosis, Wiring Schematics, Connector Information | |
| Hydraulic System Operation, Tests and Adjustments | Hydraulic Tests, Adjustments, Hydraulic Schematics | |
| Service Tools | Dealer Fabricated Tools, Service Tools and Kits |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 1023E | ||
| Engine - 1023E | Yanmar 3TNM74, 3-cylinder diesel, 0.993 L (60.59 cu in) | |
| 1025R | ||
| Engine - 1025R | Yanmar 3TNV80, 3-cylinder diesel, 1.267 L (77 cu in) | |
| 1026R EEC | ||
| Engine - 1026R EEC | Yanmar 3TNV76, 3-cylinder diesel, 1.115 L (68 cu in) | |
| 1023E, 1025R, 1026R | ||
| Engine Crankcase Capacity (with filter) | 2.7 L (2.9 qt) - all three models | |
| All models | ||
| Cooling System Capacity | 3.7 L (3.9 qt) | |
| Fuel Tank Capacity | 21.2 L (5.6 gal) | |
| Transmission and Hydraulic System Capacity | 12.3 L (3.25 gal) | |
| MFWD Axle Housing Capacity | 2.8 L (3.0 qt) | |
| Hydraulic Working Pressure | 138 +/-10 bar (2000 +/-150 psi) | |
| Hydraulic Charge Pressure | 4.9 +3/-0 bar (71 +43/-0 psi) | |
| PTO Speed | 540 rpm, fully independent | |
| Ground Speed Range | Low 0-6.6 km/h (0-4.1 mph) / High 0-14.6 km/h (0-9.1 mph) | |
