David Brown 4600 Selectamatic: all source data
All 75 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | David Brown |
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| (no label) | Utility tractor |
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| (no label) | Built in Meltham Mills, Huddersfield, England |
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| Original price | $4,600 (1971) |
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Engine| (no label) | David Brown 2.7L 3-cyl gasoline |
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Transmission| (no label) | 6-speed gear |
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| (no label) | 12-speed gear |
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Power| PTO (claimed) | 46 hp | 34.3 kW |
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| Drawbar (tested) | 38.34 hp | 28.6 kW |
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| PTO (tested) | 46.05 hp | 34.3 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Final drives | spur gear |
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| Differential lock | rear diff lock standard |
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| Steering | manual |
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| Steering | power-assist optional |
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| (no label) | Expanding shoe brakes |
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| (no label) | Open operator station. |
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Capacity| Fuel | 13.75 gal | 52.0 L |
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| Hydraulic system | 6 gal | 22.7 L |
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Hydraulics| Type | Selectamatic |
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| Capacity | 6 gal | 22.7 L |
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| Pressure | 2000 psi | 137.9 bar |
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| Valves | 0 to 2 |
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| Pump flow | 7.3 gpm | 27.6 lpm |
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Hitch| Rear Type | II/I |
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| Control | position and draft control |
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| Rear lift (at ends) | 1800 lbs (working) | 816 kg |
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| Rear lift (at ends) | 2500 lbs (static) | 1134 kg |
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Pto| Rear PTO | live |
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| Rear PTO Type | 540/1000 |
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| Engine RPM | 540@1823 |
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| Engine RPM | 1000@2000 |
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Dimensions| Wheelbase | 79.75 inches | 202 cm |
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| Weight | 4300 lbs | 1950 kg |
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| Front tire | 6.00-16 |
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| Rear tire | 14.9/13-28 |
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Engine
Engine detail| (no label) | David Brown |
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| (no label) | gasoline |
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| (no label) | 3-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 164.4 ci | 2.7 L |
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| Bore/Stroke | 3.939x4.500 inches | 100 x 114 mm |
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| Air cleaner | oil bath |
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| Compression | 7.5:1 |
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| Rated RPM | 2200 |
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| Operating RPM | 700-2200 |
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| Torque | 140 lb-ft | 189.8 Nm |
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| Torque RPM | 1400 |
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| Starter volts | 12 |
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| Oil capacity | 6.75 qts | 6.4 L |
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| Coolant capacity (Coolant) | 11 qts | 10.4 L |
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Transmission
Transmission options| (no label) | 6-speed gear |
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| (no label) | 12-speed gear |
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Transmission| Type | gear |
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| Gears | 6 forward and 2 reverse |
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| Clutch | dry disc |
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| Oil capacity | 24 qts | 22.7 L |
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| Type | gear |
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| Gears | 12 forward and 4 reverse |
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| Clutch | dry disc |
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| Oil capacity | 24 qts | 22.7 L |
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Dimensions
Tires| Ag front | 6.00-16 |
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| Ag rear | 14.9/13-28 |
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| Ag front | 7.50-16 |
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Dimensions| Wheelbase | 79.75 inches | 202 cm |
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| Length | 121.5 inches | 308 cm |
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| Width | 68.375 inches (min) | 173 cm |
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| Height (hood) | 54 inches | 137 cm |
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| Operating weight | 4300 lbs | 1950 kg |
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| Ballasted weight | 6750 lbs | 3061 kg |
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| Clearance (front axle) | 19.75 inches | 50 cm |
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| Clearance (drawbar) | 14.25 inches | 36 cm |
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| Front tread | 52 to 72 inches | 132 to 182 cm |
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| Rear tread | 52 to 80 inches | 132 to 203 cm |
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| Rear tread | 60 to 80 inches (PAVT) | 152 to 203 cm |
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