John Deere's operation and tests manual TM10736 for the 120D excavator. Diagnostics are organized by the machine's own electronic controllers, so a fault code points straight to the main, engine, information, air conditioner or monitor controller, backed by theory of operation and testing for the engine, electrical, power train, hydraulic and A/C systems.
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This manual (TM10736, dated 19AUG15) is written for the John Deere 120D excavator. It's the operation and test half of the set; disassembly and rebuild are handled in the companion repair manual, TM10737.
Diagnostic trouble codes are grouped by controller - the Main Controller (MCF), Engine Control Unit (ECU), Information Controller (ICF), Air Conditioner Controller (ACF) and Monitor Controller (MON) - the same structure John Deere uses across its current DLC and D-series excavator lineup. A terminology cross-reference chart is included at the back for bridging older component names into current terminology.
Also useful alongside this manual: the PowerTech 4.5L/6.8L base engine manual (CTM104), the PowerTech E 6.8L Level 16 Denso HPCR fuel system manual (CTM502), the Undercarriage Appraisal Manual (SP326VOL1), and JDLink/ZXLink diagnosis and tests (TM114519).
| Manual Number | TM10736 (19AUG15) |
|---|---|
| Model | 120D |
| Companion Repair Manual | TM10737 |
| Document Type | Operation and Tests |
| Machine Type | Excavator |
| Engine | PowerTech 4.5L/6.8L |
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