Part of the John Deere Repair Manuals.
Quad-Range, Power Shift, Syncro-Range, Perma-Clutch: the power train is the deepest water in the John Deere 4230 Technical Manual PDF, TM1056, claiming nearly a third of its 702 pages, with engine, fuel, electrical, hydraulic, steering, and front axle coverage filling out the rest of this factory tractor service book. Wiring diagrams trace the Delcotron charging circuit and both starting circuits wire by wire, while hydraulic schematics follow oil from the main reservoir through the pumps, rockshaft, and breakaway couplers. Troubleshooting charts run fuel system malfunctions back to a cause before you crack an injection line. Set fan belt deflection at 1.00 inch and torque the hydraulic pump drive coupling to 30 ft-lbs (41 Nm). A wrong guess means splitting the tractor twice. Print the pages your job calls for, let them soak up grease on the bench, and keep the bookmarked, text-searchable original clean for next season.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 3-34 | Predelivery, Delivery, And After-Sale Services, Tune-Up, Lubrication, Separation, Specifications and Special Tools |
| Engine | 35-76 | Cylinder Head, Valve Train, And Camshaft, Cylinder Block, Liners, Pistons, And Rods, Crankshaft |
| Fuel System | 77-126 | Diagnosing Malfunctions, Air Intake System, Diesel Fuel System, Gasoline Fuel System, Speed Control Linkage, Specifications and Special Tools |
| Electrical System | 127-256 | Information and Wiring Diagrams, Delcotron Charging Circuit, Delco-Remy Starting Circuit, John Deere Starting Circuit, Ignition System, Lighting and Accessory Circuits |
| Power Train | 257-454 | Regular Clutch, Perma-Clutch, Creeper Transmission, Syncro-Range Transmission, Quad-Range Transmission, Power Shift Transmission, Differential, Final Drive |
| Steering and Brakes | 455-456 | Is a Two-Page Pointer: the Book States That General Information, Testing, Diagnosis, Repair and Adjustment for the Power Steering and Brake Systems Live in Section 70, Hydraulic System |
| Hydraulic System | 457-612 | General Hydraulic System Tests and Diagnosis, Main Reservoir, Filter, Valves, And Oil Cooler, Hydraulic Pumps, Early Model Power Steering, Late Model Power Steering |
| Miscellaneous | 613-702 | Front Axles, Air Conditioning System, Heating System, Specifications |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Add on tractors equipped with a heater | 2 U.S. qts. (1.9 L) | p. 6 |
| Sound-Gard Body and Control Island rubber mounts (late models) | 15 to 25 ft-lbs. (20 to 34 Nm) | p. 33 |
| Hydraulic pump drive coupling | 30 ft-lbs. (41 Nm) | p. 33 |
| Radiator cap pressure | 6.25 to 7.50 psi | p. 63 |
| Fan belt deflection | 1.00 inch | p. 63 |
| Sound-Gard Body relay winding resistance | 19 ohms | p. 131 |
| Sound-Gard Body relay winding current draw | 0.6 amp | p. 130 |
| Planetary air pressure test | 50 psi | p. 361 |
| Synchronizer disk thickness | 0.060 in. | p. 363 |
| Main hydraulic pump standby pressure (3.0 cu. in. pump) | 2200 to 2300 psi | p. 19 |
| Friction spring compression | 0.77-inch at 81 to 99 lbs | p. 556 |
| Metering pump cap screw torque | 35 ft-lbs | p. 556 |
