Part of the John Deere Repair Manuals.
This is the complete John Deere factory technical repair manual (TM1353) for the 4050, 4250 and 4450 QUAD-RANGE and Power Shift tractors. Across 1,671 pages it walks through every major system: splitting the tractor to access the engine and drivetrain, rebuilding the diesel engine from cylinder head to crankshaft, servicing the QUAD-RANGE and Power Shift transmissions, repairing the MFWD axle and clutch, overhauling the main hydraulic pump and rockshaft, and tracing the full electrical system with wiring diagrams. It is the same information a John Deere dealer technician works from, with all the torque values, fluid capacities and test pressures called out so a repair is done to spec the first time.
What's Inside This John Deere 4050-4450 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General | Predelivery and After-Sale Inspection, Tune-Up, Lubrication, Safety, Specifications | |
| Tractor Separation | Front Axle, Front-End Separation, Front-End and Engine Separation, Sound-Gard Body and Roll-Gard Structure, Power Shift Clutch Housing, Quad-Range Clutch Housing, Transmission, Final Drives, Hi-Crop Final Drives | |
| Engine | Cylinder Head, Valves and Camshaft, Cylinder Block, Liners, Pistons and Rods, Crankshaft, Main Bearings and Flywheel, Lubrication System, Cooling System | |
| Fuel and Air System | Air Intake System, Diesel Fuel System, Speed Control Linkage | |
| Electrical System | Harness Replacement, Connector Repair, Delco-Remy Charging Circuit, John Deere Charging Circuit, Starting Circuit, Lighting Circuit, Investigator Ii Warning System, Digital Tachometer, Gauge Cluster Instrumentation, Analog Tachometer, Accessories Circuit | |
| Power Train - Perma Clutch Transmission | Clutch Oil Pressure Valve Housing, Perma Clutch, Quad-Range Planetary (4050/4250/4450), Eight-Speed Transmission and Charge Pump, PTO Gear Train (with and Without MFWD), Differential, Differential Lock Valve, Final Drive, Hi-Crop Final Drive, MFWD Gear Train and Clutch, MFWD Axle | |
| Power Train - Power Shift Transmission | Traction Clutch Valve Housing, Transmission Control Valve Housing, Traction Clutch and Drive Shafts, Input Planetary, Reduction Gear Train, Output Planetary, Speed Selector Assembly, Charge Pump Assembly, PTO Gear Train, Differential, Differential Lock Valve, Final Drive, Hi-Crop Final Drive, MFWD Gear Train, MFWD Clutch, MFWD Axle and Final Drive | |
| Steering and Brakes | Power Steering Components, Steering Column, Metering Pump, Steering Valve, Steering Motor, Dual Piston Steering Motor, Steering Assist Cylinders (MFWD), Brake Valve, Brake Accumulator, Bleeding Brakes, Brake Pistons, Plates and Disks | |
| Hydraulics | Main Hydraulic Pump, Oil Filter Relief Valve Housing, Hydraulic Attenuator, Hydracushioned Seat Valve, Pressure Control Valve, Rockshaft Components, Lift Assist Cylinders, Draft Sensing Components, Hitch Components, SCV and Iso Coupler, Remote Cylinder, Hydraulic Oil Cooler, Thermal Bypass Valve, Transmission-Hydraulic System Cleanup | |
| Miscellaneous | Rear Wheels, Front Axle | |
| Operator Station | Air Conditioning System, Air Conditioning Service, Heating System, Seat | |
| Miscellaneous Options | Auxiliary Lighting and Electrical Components, Digital Tachometer Ground Speeds, Auxiliary Trailer Brake, Secondary Brake, Auxiliary Steering System | |
| Special Tools | Special Tool Index and Part Numbers |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 4050 (Serial No. -006509) | ||
| PTO Horsepower at 2200 rpm (4050 early) | 75 kW (100 hp) | |
| 4250 | ||
| PTO Horsepower at 2200 rpm (4250) | 90 kW (120 hp) | |
| 4450 | ||
| PTO Horsepower at 2200 rpm (4450) | 104 kW (140 hp) | |
| All Models | ||
| Engine Crankcase Capacity | 17.0 L (18 qt) | |
| Fan Belt Tension | 375 to 425 N (85 to 95 lbs.) | |
| Clutch Housing-to-Engine Torque | 407 N-m (300 ft-lbs) | |
| 4250 and 4450 | ||
| Cooling System Capacity | 25.6 L (27 qt) | |
| 4050 (Serial No. 006510-) | ||
| Compression Test (minimum) | 2400 kPa (24 bar / 350 psi) minimum | |
| Power Shift Models without MFWD | ||
| Transmission-Hydraulic System Capacity (Power Shift without MFWD) | 51.0 L (13.5 gal) | |
