The **John Deere 644J 4WD Loader Service Repair Technical Manual (TM10246)** is your one-stop solution for major mechanical restoration. **Texas Manuals** provides the searchable PDF data required to maintain units starting at SN 611232.
### **Repair Focus:**
* **Engine Service:** Complete teardown and assembly specs for high-spec diesel motors.
* **Power Train:** Detailed service for axles, brakes, and transmission gearsets.
* **Hydraulic Repair:** Rebuilding procedures for main pumps and high-flow valves.
* **OEM Accuracy:** Ensure your machine meets John Deere standards with precise torque and tolerance values.
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