Identify faults faster on heavy-duty motor graders with the **John Deere 870G, 870GP, 872G, and 872GP Diagnostic Service Manual (TM13067X19)** from **Texas Manuals**. master the logic of specific SN units with factory-certified diagnostic data.
### **Technical Data:**
* **Heavy Drive Logic:** Troubleshooting for large-scale powershift transmissions.
* **Electrical Maps:** High-definition wiring diagrams for circuit tracing and component testing.
* **System Testing:** Flow and pressure tests for the high-capacity hydraulic units.
* **DTC Analysis:** find dashboard error solutions in seconds using our searchable PDF via **Texas Manuals**.
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