This page provides a detailed comparison of the specifications for the Hart-Parr Old Reliable 30-60 and the John Deere 9420R.
| Hart-Parr Old Reliable 30-60 | John Deere 9420R | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Hart-Parr | John Deere |
| Engine Model | - | John Deere Diesel six-cylinder vertical with two turbochargers, air-to-air aftercooler, and D.E.F (Diesel Exhaust Fluid) exhaust treatment |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Kerosene | Diesel |
| Engine Induction Type | Natural | Electronic injection with turbochargers and aftercooler |
| Engine Cylinders | 2 | 6 |
| Engine Displacement Value | 2356 ci (38.6 L) | 826 ci (13.5 L) |
| Engine Rated Rpm | 300 | 2100 |
| Transmission | ||
| Transmission Type | Gear | Selective gear fixed ratio with full range operator controlled power shift |
| Transmission Forward Gears | 1 | 18 |
| Transmission Reverse Gears | 1 | 6 |
| Dimensions | ||
| Length Value | 200 | 314.3 |
| Width Value | 106 | 176 |
| Operating Weight Value | 20100 lb (9117 kg) | 42965 lb (19489 kg) |
| Miscellaneous | ||
| Chassis | 4x2 | - |
| Drive Type | 2WD | - |
| Hitch Type | - | Category 4N, Category 4 |
| Hitch Category | - | IV |
| Hitch Position | - | Rear |
| Hydraulic System Type | - | Closed-center pressure/flow compensated |
| Operator Station Type | - | Cab |
| Starter Type | - | 12 volt electric |
