Part of the John Deere Repair Manuals.
Your 544H just logged a transmission service code with a stockpile waiting, and TM1604, John Deere's 832-page technical manual for the H-Series loader and tool carrier family, lays out the diagnostics for all four variants, 444H through TC54H. Electrical work takes up nearly two-fifths of this John Deere 544H technical manual PDF, with wiring diagrams that trace each harness from the controllers to sensors such as the B28 and B29 torque converter speed pickups. Hydraulic schematics map the loader valve and bucket cylinder circuits, while theory of operation and diagnostic chapters cover the power train. Set the boom height kickout switch at 5 to 8 mm (0.197 to 0.315 in.) from its adjustable plate, and expect 17 to 21 ohms across a healthy control valve solenoid. Every hour it sits parked is tonnage you're not moving. Bookmarked and text-searchable, the file helps you isolate the failed component and order the right part the first time.
What's Inside This John Deere 444H, 544H, TC44H, TC54H Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-44 | Safety Information (Handle Fluids Safely, Avoid Fires, Prevent Battery Explosions) |
| Operational Checkout Procedure | 45-114 | Diagnostic Service Codes, Monitor Indicator, Transmission Controls, Brake System, Steering System, Cab Component |
| Engine | 115-144 | Theory of Operation, Diagnostic Information, Adjustments, Tests |
| Electrical System | 145-464 | System Information, System Diagrams, Sub-System Diagnostics |
| Power Train | 465-566 | Torque Converter Operation, Transmission Operation, Transmission Test Points, Axle Breather Test |
| Hydraulic System | 567-762 | Hydraulic Pump Control, Steering Valve Operation, Boom Raise Operation, Loader Hydraulic System |
| Heating and a/C | 763-832 | Theory of Operation, System Operational Checks, Diagnostic Information, Adjustments, Tests |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Torque Converter Input Speed Sensor (B28) Normal Operating Range | 900—2250 rpm | p. 333 |
| Torque Converter Output Speed Sensor (B29) Normal Operating Range | 0—2250 rpm | p. 333 |
| Control Valve Solenoid Resistance | 17—21 ohms | p. 360 |
| Minimum oil to add to reservoir for wash out | 19 L (5 gal) | p. 711 |
| Switch and Adjustable Plate Clearance (Boom Height Kickout) | 5—8 mm (0.197— 0.315 in.) | p. 712 |
| Switch and Adjustable Plate Clearance (Return-To-Carry) | 5—8 mm (0.197— 0.315 in.) | p. 713 |
| Ride Control Hydraulic Pressure | 0 kPa, 0 bar, 0 psi | p. 717 |
| Ride Control Accumulator Gas Charge Pressure | 1930—2210 kPa, 19.3—22.1 bar, 280—320 psi | p. 718 |
| Hydraulic Oil Temperature | 40 ± 6°C (100 ± 10°F) | p. 760 |
| ROPS Mounting Bolts Torque | 620 ± 120 N·m (457 ± 88 lb-ft) | p. 29 |
| 444H, TC44H | ||
| 444H/TC44H Fuel Tank Capacity | 180 L (48 gal) | p. 23 |
| 544H, TC54H | ||
| 544H/TC54H Fuel Tank Capacity | 246 L (65 gal) | p. 28 |
John Deere 444H, 544H, TC44H, TC54H Common Problems This Manual Covers
John Deere 444H, 544H, TC44H, TC54H loader diesel engine will not start or starts hard when cranked
Check for a click at the injection pump with the key switch On; no click means replace the fuse or repair the wiring per page 122. Drain water from the fuel tank and change the filter, with no smoking while you work on the fuel system (page 40). For slow cranking, check battery and connections, but never check charge by laying metal across the posts (page 9).
Manual Section: Engine Malfunctions p. 122Engine surges or stalls frequently while working the loader, with air bubbles showing in the fuel filter
Inspect the fuel filter for air, then tighten connections and bleed the fuel system as listed on page 123. Remove the tank cap and listen for air entering to rule out a plugged vent. Drain water and replace filters. If it persists, route the injection pump return line into a separate container; normal running points to a restricted return line. Do not smoke while working on the fuel system (page 40).
Manual Section: Engine Malfunctions p. 123Engine does not develop power and the loader lugs down with the throttle pedal fully pressed
Remove and clean the fuel tank outlet strainer, replace the fuel filter, and check air filter restriction per page 125, with no smoking near the fuel system (page 40). Check high idle speed and adjust the linkage if low. Check service and park brake drag through the Operational Checkout on page 45. Then inspect the turbocharger compressor vanes for sharp, straight leading edges (page 126).
Manual Section: Engine Malfunctions p. 125Abnormal engine noise heard from the engine compartment with oil level low or oil looking thin
Check engine oil level and add the correct oil, then inspect it for fuel dilution and track down the cause, as listed on page 127. Inspect the hydraulic pump drive coupling for looseness or wear and repair it. Remove the air intake hose, check compressor wheel clearance to the housing, and spin the turbocharger wheel while listening for failed bearings.
Manual Section: Engine Malfunctions p. 127Engine oil pressure light on, red STOP light flashing and alarm sounding at idle
Check oil level and add oil to the proper level, then change the oil if it is the wrong viscosity or diluted with diesel, per page 128. Test the oil pressure gauge and sensor. Before tearing into the engine, verify the S 065 Engine Oil Pressure Sensor option setting; page 305 notes a wrong On or Off setting triggers this exact warning at idle.
Manual Section: Engine Malfunctions p. 128Engine overheats with the coolant temperature gauge in the red and STOP light flashing
Check coolant level, fill the system and look for leaks as listed on page 129. Inspect the fan belt and tensioner, clean a dirty or plugged radiator, and repair a missing or damaged shroud or baffles. Replace the radiator cap if suspect and reduce load if the engine is overloaded. Check brake drag through the Operational Checkout on page 45, then inspect the thermostat for sticking closed.
Manual Section: Engine Malfunctions p. 129Frequently Asked Questions
How do I reset or clear diagnostic trouble codes on a John Deere 444H, 544H, TC44H, or TC54H?
To clear service codes from the monitor, press NEXT until 'END' is displayed, then press and hold SELECT for 5 seconds. Service codes will appear one at a time. Pressing and holding SELECT for 5 seconds will delete the displayed service code. Repeat this until 'END' appears in the basic display window. p. 49
How do I check diagnostic trouble codes from the monitor?
Turn the key to the ON position. After the bulb check, press the MENU button until the diagnostic mode (d) is shown in the basic display window. Press SELECT to display (d 01), then press SELECT again to display the service codes. If no faults are detected, 'End' will be displayed. p. 48
How do I adjust the ride-control pressure on a John Deere 444H or 544H?
The ride control accumulator gas charge pressure should be 1930—2210 kPa (280—320 psi). To adjust, use the JT05420 Nitrogen Accumulator Charging Kit to verify and charge the accumulator as necessary, following the procedure on page 718 and 719. p. 719
What is the torque specification for the ROPS mounting bolts on a John Deere 444H, 544H, TC44H, TC54H?
The torque specification for ROPS mounting bolts is 620 ± 120 N·m (457 ± 88 lb-ft). p. 29
What is the engine oil capacity for a 444H/TC44H engine crankcase and filter?
The engine crankcase and filter capacity for the 444H/TC44H is 13.2 L (14 qt). p. 23
Is this John Deere 444H manual a download or a disc?
Immediate download of the complete 832-page searchable Technical Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Is printing allowed for this John Deere 444H Technical Manual?
Yes. Print the pages you need for the job in your own shop, and bin them when they get greasy.
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