Part of the John Deere Repair Manuals.
This is the complete John Deere factory diagnostic and repair manual (TM131019) for the 4044M, 4044R, 4049M, 4049R, 4052M, 4052R, 4066M and 4066R compact utility tractors. Across 2,285 pages it covers every system on these machines: engine teardown with piston, crankshaft, and valve specs; hydrostatic and power reverser transmission service; MFWD, differential, and PTO final drives; hydraulic system with rockshaft, range control, three-point hitch, and selective control valves; the full electrical system with wiring schematics and circuit diagrams; and complete ECU, ICC, PTH, and PTR diagnostic trouble code trees with step-by-step fault isolation routines. It is the same manual a John Deere dealer technician uses, with the torque values, bearing clearances, and pressure test specs that let you repair to factory tolerance the first time.
What's Inside This John Deere 4044M-4066R Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | Safety Procedures, General References, Technical Specifications, Fuel and Lubricant Requirements, Serial Number Locations | |
| Engine Repair | Engine Removal and Installation, Rocker Arm Assembly, Cylinder Head Remove and Install, Valves and Valve Seats, Flywheel, Timing Gear Cover, Crankshaft and Main Bearings, Pistons and Connecting Rods, Camshaft, Cylinder Bore Inspection and Reboring | |
| Fuel, Air Intake, and Exhaust Repair | Fuel Pump, Fuel Filter, Water Separator, Fuel Injectors, Fuel Injection Nozzle, Injection Pump, Fuel Cooler, Fuel Tank, Air Cleaner, Turbocharger, Exhaust Valve Actuator | |
| Electrical Repair | Battery, Starter, Alternator, Electrical System Components, Wiring Harnesses | |
| Transmissions Repair | Separation, Hydrostatic Power Train, Power Reverser Transmission | |
| Final Drive Repair | MFWD, Differential, PTO | |
| Steering and Brake Repair | Steering System, Brakes | |
| Hydraulics Repair | Hydraulic Pump and Filter, Rockshaft, Range Control, Three-Point Hitch, Selective Control Valve | |
| Miscellaneous Repair | Hood and Side Panels, Fenders, Wheels | |
| Cab / Open Operator Station Repair | Seat and Support, Control Console, Roll-Gard, Cab Components, Open Operator Station Components, Heating System, Air Conditioning System, Temperature Control and Blower Motor | |
| Diagnostic Trouble Codes | ECU Engine Control Unit Codes, Icc Instrument Cluster Control Codes, Pth Hydrostatic Power Train Codes, Ptr Power Train Reverser Codes | |
| Observable Symptoms and System Diagnostics | Engine Diagnostics, Fuel and Cooling Diagnostics, Electrical Diagnostics, ECU Diagnostics, Drive Systems and Transmission Diagnostics, Steering and Brake Diagnostics, Hydraulic Diagnostics, Cab and Oos Diagnostics | |
| Engine Operation, Tests, and Adjustments | Calibrations, Preliminary and Operational Checks, Theory of Operation, Tests and Adjustments | |
| Fuel, Air, Exhaust, and Cooling Operation, Tests, and Adjustments | Calibrations, Theory of Operation, Component and Connector Information, Tests and Adjustments | |
| Electrical Theory, Schematics, and Component Information | Key Switch and Starter, Alternator, Accessory Power, Control Module, Headlights, Hydraulics and Rockshaft, Heating and AC, Cruise Control, Windshield Wiper, Icc, MFWD, Brakes, PTO, Speed Sensor, ECU, Tcu Circuits | |
| Electrical Schematics and Circuit Diagrams | Full Electrical Schematics, Circuit Diagrams, Connector Identification, Fuses and Relays, Ground Points, Interconnects | |
| Electronic Control Units | Icc, ECU, Pth, And Ptr Calibrations, Preliminary Checks, Theory of Operation, Component Information, Tests and Adjustments | |
| Power Train Transmission Operation, Tests, and Adjustments | Pth Hydrostatic and Ptr Power Reverser Calibrations, Theory of Operation, Schematics, Component Connector Information, Tests and Adjustments | |
| Hydraulics Operation, Tests, and Adjustments | Calibrations, Theory of Operation, Hydraulic Schematics, Component and Connector Information, Pressure Tests and Adjustments | |
| Cab and Oos Operation, Tests, and Adjustments | HVAC Theory of Operation, Seat Theory of Operation, Schematics, Component Information, Tests and Adjustments | |
| Service Tools | General References, Dealer-Fabricated Tools, Special Service Tools |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All models | ||
| Flywheel Cap Screw Torque | 86 N.m (63 lb-ft) | |
| Connecting Rod Cap Screw Torque | 49 N.m (36 lb-ft) | |
| Main Bearing Cap Screw Torque | 98 N.m (72 lb-ft) | |
| Crankshaft Pulley Cap Screw Torque | 117 N.m (86 lb-ft) | |
| Standard Piston Outside Diameter | 83.90 mm (3.303 in.) max | |
| Crankshaft End Play (Max) | 0.27 mm (0.011 in.) | |
| Main Bearing-to-Crankshaft Journal Clearance (Max) | 0.15 mm (0.006 in.) | |
| Connecting Rod Bearing-to-Crankshaft Clearance (Max) | 0.16 mm (0.006 in.) | |
| Hydraulic Reservoir Capacity | 47.3 L (12.5 gal.) | |
| 4044M, 4049M, 4052M, 4066M | ||
| Fuel Tank Capacity (Open Station) | 49.2 L (13.0 gal.) | |
| Coolant System Capacity (Open Station) | 6.0 L (1.6 gal.) | |
| 4044R, 4049R, 4052R, 4066R | ||
| Fuel Tank Capacity (Cab) | 52 L (13.8 gal.) | |
| Coolant System Capacity (Cab) | 8.0 L (2.1 gal.) | |
