This page provides a detailed comparison of the specifications for the David Brown 990 Selectamatic and the John Deere 9460RT.
| David Brown 990 Selectamatic | John Deere 9460RT | |
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| Engine | ||
| Engine Manufacturer | David Brown | John Deere |
| Engine Model | - | PowerTech PSX |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Naturally Aspirated | Turbocharged with two turbochargers and air-to-air aftercooler |
| Engine Cylinders | 4 | 6 |
| Engine Displacement Value | 195 ci (3.2 L) | 827 ci (13.5 L) |
| Engine Rated Rpm | 2200 | 2100 |
| Engine Power Output Value | 55 hp (41.0 kW) | 460 hp (343.0 kW) |
| Transmission | ||
| Transmission Type | Gear type with dry disc clutch | Full power shift |
| Transmission Forward Gears | 6 | 18 |
| Transmission Reverse Gears | 2 | 6 |
| Dimensions | ||
| Length Value | 126 | 237 |
| Width Value | 63.8 | 136 |
| Operating Weight Value | 5104 lb (2315 kg) | 47020 lb (21328 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | Track |
| Drive Type | 2WD | Track |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Category | II/I | Category 4N/4 |
| Hitch Position | Rear | Rear |
| Hitch Capacity Value | 2000 lb (907 kg) | - |
| Hydraulic System Type | Open center | Closed center pressure flow compensated |
| Operator Station Type | Open | Cab |
| Starter Type | Electric | Electric |
