Official John Deere TM-1090 Technical Manual for the JD302-A Loader and Backhoe Loader - complete engine, hydraulic, and driveline repair.
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This is the official John Deere TM-1090 Technical Manual for the JD302-A Loader and Backhoe Loader, published in December 1978. The manual follows John Deere's classic structure for this era, opening with general specifications, predelivery and after-sale services, and lubrication, then moving into a thorough engine section covering removal and installation, basic engine service, lubrication system, and cooling system.
The hydraulic system section is especially detailed given this machine's loader and backhoe function, covering the transmission pump, main hydraulic pump, reverser clutch control valve, pressure control valve, steering valve, brake valve, and loader control valve. Because the backhoe attachment on this machine was offered in two control valve configurations, the manual includes separate dedicated groups for both the 9250 Backhoe Control Valve and the 9250-A Backhoe Control Valve, along with the selective control valve shared across both setups.
Beyond the hydraulics, this manual provides the full driveline, chassis, and electrical repair procedures needed to keep a JD302-A running and productive. Anyone doing hydraulic troubleshooting, a pump rebuild, or driveline work on this loader/backhoe combination machine will find the complete factory procedures here.
The chassis and electrical sections cover the machine's lighting, charging, and starting circuits, along with the instrument panel gauges a dealer would have checked during predelivery inspection. Because the JD302-A was a popular machine for both agricultural and light construction work, this manual sees frequent use for routine maintenance as well as full hydraulic and driveline rebuilds, making it a practical reference to keep on hand whether a specific repair is planned or not.
| Manual Number | TM-1090 (Dec-78) |
|---|---|
| Manual Type | Technical Manual |
| Language | English |
| Model Coverage | JD302-A Loader and Backhoe Loader (9250 and 9250-A backhoe control valve configurations) |
| Format | PDF, searchable text |
| John Deere JD302-A Loader Backhoe Manual TM-1090 | John Deere TM-1090 technical manual for the JD302-A loader and backhoe loader. Engine, hydraulic, and driveline repair. |
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