John Deere 444J, 544J, 624J Operation and Test Manual TM2135
Technical reference for John Deere 444J, 544J, and 624J loaders. Covers operation and testing procedures for various machine systems and components. Reference TM2135.
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John Deere Models Covered & Key Technical Specifications
Models: John Deere 444J, John Deere 544J, John Deere 624J
Build Years: 2004
Serial Numbers: 590068 and later
Technical Data:
- Hydraulic oil temperature: 44—56 °C (110—130°F)
- Engine fast idle speed: 2325—2375 rpm
- 444J (Z-Bar) boom raise cycle time: 5.8 seconds
- 544J (Z-Bar) boom raise cycle time: 6.0 seconds
- 624J (Z-Bar) boom raise cycle time: 6.4 seconds
- 444J (Z-Bar) boom lower (float) cycle time: 3.0 seconds
- Steering (stop to stop) cycle time: 2.7 seconds
- Air intake system pressure: 13.8—20.7 kPa (0.13—0.21 bar, 2—3 psi)
- Engine cooling system pressure (cap relief): 103 kPa (1 bar, 15 psi)
- 444J/544J turbocharger boost pressure: 62—83 kPa (0.62—0.83 bar, 9—12 psi)
- 624J turbocharger boost pressure: 83—103 kPa (0.83—1.03 bar, 12—15 psi)
John Deere Manual Features & Content Preview
John Deere 444J, 544J, 624J Loader Technical Documentation
- Covers 444J, 544J, and 624J J-Series loaders with operational, testing, and system information for technicians
- Original OEM publication TM2135, released January 8, 2004
- Includes 170+ component-location listings, electrical schematics, and cycle-time specification tables for engine and hydraulic performance testing
- Accessible from your device as soon as the order is placed
- Suitable for printing individual sections for shop-floor use
- This 630-page manual serves as the definitive reference for J-Series loader diagnostic procedures and electrical integration systems
Operational and Testing Documentation
This John Deere 444J, 544J, 624J Loader technical manual provides comprehensive details on the operational checkout procedures required for daily maintenance and diagnostic troubleshooting. It details the steps for verifying the status of the electrical system, hydraulic controls, and transmission performance, guiding the user through engine-off and engine-running checks to confirm factory-standard operation. The text outlines safety protocols for high-pressure fluid systems, welding repairs, and heavy equipment operation, emphasizing the importance of utilizing original John Deere documentation to ensure structural and mechanical reliability during repairs.
Engine and Electrical Reference Values
The John Deere 444J, 544J, 624J Loader manual documents extensive electrical and mechanical specifications, including boost pressure ratings, cycle timing, and fuse configurations. Hydraulic oil temperature is documented at 44—56 °C (110—130°F) in the cycle time test section. Engine fast idle speed for all models is specified at 2325—2375 rpm in the test data. The 624J turbocharger boost pressure is listed at 83—103 kPa (0.83—1.03 bar, 12—15 psi) in the pressure test table. Reference what an OEM service publication covers for additional insights. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. An official 630-page John Deere OEM technical manual covering the 2004 J-Series loaders, documenting engine, hydraulic, and electrical system diagnostics for the 444J, 544J, and 624J models.
Document Reference: TM2135 08JAN04, published by Deere & Company
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