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Part of the John Deere Repair Manuals.
All 599 pages of this John Deere 444D, 544D, 644D Technical Manual PDF (OEM TM-1341) go to work on one job: diagnosing and fixing your loader like the factory built it. Inside: full wiring diagrams for the electrical system, hydraulic schematics covering the steering and loader control valve circuits, and page after page of operational checkout and troubleshooting procedures. You also get engine, power train, and heating and air conditioning test sections with diagnostic information for every system. Torque the wheel retainer cap screws to 410 ± 40 N·m (300 ± 30 lb-ft), then time the hydraulic pump performance check: 8.0 seconds for the 444D and 644D, 7.5 for the 544D. No more chasing wiring faults with a multimeter and a prayer. Bookmarked PDF that opens on any device; grab your tablet, walk to the loader, and start wrenching.
What's Inside This John Deere 444D, 544D, 644D Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 5-42 | Introduction and Safety, Torque Values, Fuels and Lubricants |
| Operational Procedure | 43-60 | Operational Checkout Procedure |
| Engine Operation and Tests | 61-142 | Theory of Operation, System Operational Checks, Diagnostic Information, Adjustments, Tests |
| Electrical System Operation and Test | 143-374 | Safety Precautions, Starting Circuit Operation, Charging Circuit Operation, Gauges and Indicator Circuit Operation |
| Power Train Operation and Test | 375-481 | Power Train Theory of Operation, Transmission Control Circuit, Brake System Operational Checks, Transmission System Tests |
| Hydraulic System Operation and Test | 482-561 | Steering and Loader Hydraulic System, Steering System Operation, Loader Control Valve Operation, Hydraulic System Operational Checks, Hydraulic System Tests |
| Heating and Air Conditioning Operation and Test | 562-599 | Air Conditioning System Operation, Receiver-Dryer Operation, Expansion Valve Operation, Air Conditioning System Tests |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Wheel Retainer Cap Screws Torque | 410 ± 40 N·m (300 ± 30 lb-ft) | p. 29 |
| Hydraulic Pump Performance Check (444D and 644D) | 8.0 seconds | p. 55 |
| Hydraulic Pump Performance Check (544D Loader) | 7.5 seconds | p. 55 |
| Air restriction indicator vacuum threshold | 635 mm (25 in.) water | p. 67 |
| Thermostat begins to open | 88°C (180°F) | p. 406 |
| Thermostat full open position | 107°C (325°F) | p. 406 |
| Park brake pedal free play | 13 mm | p. 419 |
| Service brake pedal free play | 12 mm | p. 419 |
| Shift control cable adapter clearance | 1.00 mm (0.04 in.) | p. 440 |
| Clutch cut-off switch plunger travel | 3.8 mm (0.5 in.) | p. 441 |
| 444D, 544D | ||
| Fuel transfer pump pressure (minimum) | 15-30 kPa (2-4 psi) | p. 131 |
| 644D | ||
| Fuel pressure | 80-170 kPa (12-25 psi) | p. 132 |
