![John Deere 444D 544D 644D Repair Manual [Wheel Loader]](https://youfixthis.com/wp-content/uploads/2016/06/2016-07-13_9-52-02-300x300.jpg)
Part of the John Deere Repair Manuals.
Need factory-level rebuild procedures for your John Deere 444J, 544J, or 624J Loader? This 378-page repair manual (OEM #TM2136) covers every major system: PowerTech 4.5L and 6.8L engines, Teammate axles, power-shift transmission, steering, service brakes, park brake, and the complete loader assembly. Inside: hydraulic schematics with full fluid routing for the loader and transmission circuits, page after page of torque tables, and exploded-view drawings throughout. You get step-by-step removal and installation sequences for each system, plus fluid capacity tables and specs that break down by model variant. Set the drive shaft universal joint cap screws to 45 N·m (32 lb-ft) on the 444J or 78 N·m (58 lb-ft) on the 544J and 624J; wheel retainer cap screws take 620 N·m (460 lb-ft) dry. Your machine is down. Bookmarked and keyword-searchable; open it on any device and pull the right spec before you pull the wrong part.
What's Inside This John Deere 444J, 544J, 624J Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| 444J, 544J, 624J Loader | 1 | Bucket, Frames, Hydraulic System, Steering System, Service Brakes, Park Brake |
| Introduction | 2-4 | Machine Orientation, Serial Number Location, Component Identification, Manual Overview |
| General Information | 9-26 | Safety Information (Recognize Safety Information, Follow Safety Instructions, Operate Only If Qualified, Wear Protective Equipment, Avoid Unauthorized Machine Modifications) |
| Wheels | 27-32 | Powered Wheels and Fasteners, Remove and Install Wheel, Remove Tire, Install Tire |
| Axles and Suspension Systems | 33-74 | Teammate™ Axles, Axle Shafts and U-Joints, Axle Shaft, Bearings, Reduction Gears, Differential Lock Solenoid Valve, Axle Circulation System |
| Transmission | 75-140 | Removal and Installation, Gears, Shafts, Bearings and Power Shift Clutch, Hydraulic System, Transmission Pump, Converter Minimum Pressure Regulator Valve |
| Engine | 141-152 | Powertech® 4.5 L (4045) and 6.8 L (6068) John Deere Engines, Serpentine Belt Remove and Install, Engine Remove and Install |
| Engine Auxiliary Systems | 153-186 | Cold Weather Starting Aids, Cooling System, Intake System, External Exhaust System, External Fuel Supply Systems |
| Dampener Drive | 187-190 | Install Dampener, Remove Dampener, Elements |
| Steering System | 191-200 | Steering Cylinder, Steering Valve, Load-Sense Relief Valve, Articulation Bearings, Steering Pump |
| Service Brakes | 201-208 | Brake Disc, Caliper, Brake Valve, Master Cylinder, Bleeding Brakes, Brake Adjustment |
| Park Brake | 209-224 | Park Brake Disc, Park Brake Caliper, Park Brake Valve, Adjustment, Engagement Mechanism |
| Frame or Supporting Structure | 225-240 | Main Frame, Articulation Joint, Pivot Pins, Counterweight, Welding Repair |
| Operator’s Station | 241-296 | Cab, ROPS, Seat Assembly, Controls Linkage, Glass Panels, Heater Core, Air Conditioning |
| Sheet Metal and Styling | 297-302 | Hood, Engine Enclosure, Fenders, Grille, Cab Skirt, Side Panels |
| Loader | 303-368 | Boom, Bucket, Boom Cylinder, Bucket Cylinder, Loader Control Valve, Quick Coupler, Linkage |
| Dealer Fabricated Tools | 369-378 | Special Service Tool Drawings, Tool Fabrication Specifications, Required Tools List |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Wheel Retainer Cap Screws—Dry Torque | 620 N•m (460 lb-ft) | p. 29 |
| Valve Stem Retaining Nut—Torque | 6 N•m (50 lb-in.) | p. 29 |
| Hydraulic Pump—Weight—Approximate | 8 kg (84 lb) | p. 323 |
| Loader Control Valve Tie-Bolt Nut—Torque | 56 N•m (42 lb-ft) | p. 334 |
| Oscillating Support Thrust Plate Cap Screw Torque—Torque | 350 N•m (255 lb-ft) | p. 47 |
| Oscillating Support Pivot Cover Cap Screw Torque—Torque | 140 N•m (105 lb-ft) | p. 47 |
| Load Sense Relief Valve—Pressure | 8274—8963 kPa (82.74—89.63 bar) (1200—1300 psi) | p. 200 |
| Wheel Retainer Cap Screws Torque (Dry) | 620 N•m | p. 29 |
| Axle and Differential Cap Screw Torque | 675 N•m | p. 38 |
| 444J | ||
| 444J Front Axle Differential Capacity | 17.5 L | p. 36 |
| 544J | ||
| 544J Front Axle Differential Capacity | 20 L | p. 36 |
| 624J | ||
| 624J Front Axle Differential Capacity | 25 L | p. 36 |
John Deere 444J, 544J, 624J Common Problems This Manual Covers
John Deere 444J, 544J, and 624J loader power steering jerks, binds, or becomes uncontrollable at low speeds p. 195
Inspect the steering valve components on page 195. Replace damaged seals and reassemble the unit. Torque the steering valve isolator cap screw to exactly 57 N•m. Verify fluid levels and bleed the system to remove trapped air before testing operation.
Manual Section: Steering Valve Removal and InstallationHydraulic system fails to build pressure or loader arms drop under heavy load p. 200
Test the load sense relief valve pressure as detailed on page 200. Connect a gauge and verify the pressure reads between 8274 and 8963 kPa (1200 to 1300 psi). If readings fall below this range, clean the valve spool or replace the spring.
Manual Section: Steering SystemTransmission slips in forward or reverse gears or hesitates during directional shifts p. 108
Disassemble the transmission and inspect the clutch pack components. Measure the KV and KR clutch pack plate clearance according to page 108. Replace friction disks if the clearance exceeds the specified 2.5 to 2.7 mm tolerance. Reassemble and fill the transmission with 20 L of oil.
Manual Section: Clutch Pack KV and KR Disassembly and AssemblyWheel hubs vibrate excessively or make grinding noises during high speed transport operations p. 29
Remove the tire and inspect the wheel hub assembly. Verify the wheel retainer cap screws are tightened properly. Torque the cap screws dry to exactly 620 N•m as shown on page 29. Check the valve stem retaining nut and torque to 6 N•m if loose.
Manual Section: Wheels and Tires RepairFrequently Asked Questions
What are the torque specs for axle bolts on John Deere 444J, 544J, and 624J loaders
For the 444J, 544J, and 624J loaders, the wheel retainer cap screws should be torqued to 620 N•m (460 lb-ft). When installing the axle and differential, the cap screw nuts require a torque of 675 N•m (500 lb-ft). The drive shaft universal joint cap screws for the 444J are 45 N•m (32 lb-ft), while for the 544J and 624J, they are 78 N•m (58 lb-ft).
How do you fix john Deere 444J, 544J, and 624J loader power steering jerks, binds, or becomes uncontrollable at low speeds?
Inspect the steering valve components on page 195. Replace damaged seals and reassemble the unit. Torque the steering valve isolator cap screw to exactly 57 N•m. Verify fluid levels and bleed the system to remove trapped air before testing operation.
How do you fix hydraulic system fails to build pressure or loader arms drop under heavy load?
Test the load sense relief valve pressure as detailed on page 200. Connect a gauge and verify the pressure reads between 8274 and 8963 kPa (1200 to 1300 psi). If readings fall below this range, clean the valve spool or replace the spring.
How do you fix transmission slips in forward or reverse gears or hesitates during directional shifts?
Disassemble the transmission and inspect the clutch pack components. Measure the KV and KR clutch pack plate clearance according to page 108. Replace friction disks if the clearance exceeds the specified 2.5 to 2.7 mm tolerance. Reassemble and fill the transmission with 20 L of oil.
What do I get after purchasing this John Deere 444J, 544J, 624J Loader manual?
A 378-page Repair Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Can I print specific sections of this manual?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Are there hydraulic schematics in this John Deere 444J, 544J, 624J Loader?
Yes, complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are included.
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