Part of the John Deere Repair Manuals.
This is the John Deere TM1677 Technical Manual for the 4200, 4300, and 4400 Compact Utility Tractors, the same 742 page service manual John Deere wrote for its own technicians. It covers the 3TNE78A, 3TNE84, and 3TNE88 diesel engines fitted across the three models.
Twelve sections take you from safety and torque specifications through the diesel engine, the full electrical system with schematics and wiring harnesses, and all three drivetrains: gear, hydrostatic, and SyncReverser. Steering, brakes, hydraulics, and final drive repairs are covered with component locations, theory of operation, tests, and step by step disassembly.
Use it to diagnose a no start, trace a wiring fault, set clutch and brake adjustments, or rebuild a transmission with correct clearances and torque values. The file is a downloadable, searchable PDF with 637 bookmarks, ready to print any page you need at the bench.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 4-8 | Recognize Safety Information, Handle Fluids Safely-Avoid Fires, Use Care in Handling and Servicing Batteries, Use Care Around High-Pressure Fluid Lines, Use Safe Service Procedures |
| Specifications and Information | 9-32 | General Vehicle Specifications, Inch Fastener Torque Values, Metric Fastener Torque Values, O-Ring Seal Service Recommendations, Diesel Fuel Specifications |
| Diesel Engine | 33-116 | Cylinder Head, Valves, Connecting Rod, Piston, Piston Pin, Piston Rings, Cylinder Bore, Crankshaft |
| Electrical | 117-360 | Reading Electrical Schematics, Theory and Diagnostic Information, Specifications (North American and European), Schematics and Wiring Harnesses, Troubleshooting |
| Gear Power Train | 361-412 | Specifications, Component Location, Clutch Adjustment, Tractor Splitting (Front), Collar Shift (CST) Traction Clutch Disassembly, 3-Speed Transmission Disassembly |
| Hydrostatic Power Train | 413-460 | Specifications, Component Location, Theory of Operation, Hydrostatic Pump Pressure Test, Hydrostatic Transmission Disassembly, Hydrostatic Motor Disassembly |
| Syncreverser™ Power Train | 461-506 | Specifications, Theory of Operation, SRT Clutch Linkage Adjustment, Syncreverser Traction Clutch Disassembly, Clutch Shimming Procedure, 4-Speed Transmission Disassembly |
| Final Drive Power Train | 507-606 | Axle Shaft, Brake, Range Shift Transmission, Differential Lock, Drive Shaft, MFWD Axle, MFWD Final Drive, MFWD Differential |
| Steering | 607-622 | Specifications, Steering Component Location, Theory of Operation, Troubleshooting Chart, Steering System Test, Tie Rod Disassembly and Assembly |
| Brakes | 623-650 | Specifications, Component Location, Brake Theory of Operation, Troubleshooting Chart, Brake Pedal Adjustment, Brake Disassembly and Inspection |
| Hydraulics | 651-702 | Hydraulic Specifications, Rockshaft Component Location, SCV Valve Component Location, Hydraulic Pump Component Location, Hydraulic System Bleed Procedure |
| Miscellaneous | 703-730 | Torque Specifications, Three Point Hitch, Roll Over Protective Structure (ROPS), Fuel Tank, Cab Repair, PTO Gearbox Removal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 4300, 4400 | ||
| Cylinder Head Bolts Torque (Lubricating Oil Applied) | 85 - 91 N•m (63 - 67 lb-ft) | p. 41 |
| 4200 | ||
| Front Wheel Mounting Bolts | 68 N•m (50 lb-ft) | p. 109 |
| All Models | ||
| Relay Coil Resistance | approximately 80 ohms | |
| Relay Replacement Condition | If continuity is NOT correct, replace relay | |
| Fuel Shutoff Solenoid Voltage | 12 VDC | p. 124 |
| Fuel Shutoff Solenoid Pull-in Voltage | 6.8 VDC | p. 124 |
| Wheel Bearing Seal Replacement Condition | Replace as required if damaged or worn | p. 561 |
| Park Brake Switch Plunger Travel for Engagement | about 3 mm (1/8 in.) from bottoming | |
