Tractor · 1968Unverified
David Brown 4600 Selectamatic
David Brown 4600 Selectamatic — Utility tractor · 46 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
46 hp
Max power
28.6 kW
Weight
1950 kg
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Overview
ManufacturerDavid BrownReference
Utility tractorReference
Built in Meltham Mills, Huddersfield, EnglandReference
Original price$4,600 (1971)Reference
Two-wheel driveReference
Final drivesspur gearReference
Differential lockrear diff lock standardReference
SteeringmanualReference
Steeringpower-assist optionalReference
Expanding shoe brakesReference
Open operator station.Reference
Engine
David Brown 2.7L 3-cyl gasolineReference
Drawbar (tested)28.6 kWReference
David BrownReference
gasolineReference
3-cylinderReference
liquid-cooledReference
Displacement2.7 LReference
Bore/Stroke100 x 114 mmReference
Air cleaneroil bathReference
Compression7.5:1Reference
Rated RPM2200Reference
Operating RPM700-2200Reference
Torque189.8 NmReference
Torque RPM1400Reference
Starter volts12Reference
Oil capacity6.4 LReference
Coolant capacity10.4 LReference
Power at rated engine speed34.3 kWReference
Max power28.6 kWReference
Transmission
6-speed gearReference
12-speed gearReference
TypegearReference
Gears6 forward and 2 reverseReference
Clutchdry discReference
Oil capacity22.7 LReference
Gears12 forward and 4 reverseReference
PTO & Hydraulics
PTO (claimed)34.3 kWReference
PTO (tested)34.3 kWReference
Hydraulic system22.7 LReference
TypeSelectamaticReference
Capacity22.7 LReference
Pressure137.9 barReference
Valves0 to 2Reference
Pump flow27.6 lpmReference
Rear TypeII/IReference
Controlposition and draft controlReference
Rear lift (at ends)816 kgReference
Rear lift (at ends)1134 kgReference
Rear PTOliveReference
Rear PTO Type540/1000Reference
Engine RPM540@1823Reference
Engine RPM1000@2000Reference
Power at rated PTO speed32.2 kWReference
Capacities
Fuel52.0 LReference
Dimensions
Wheelbase202 cmReference
Weight1950 kgReference
Front tire6.00-16Reference
Rear tire14.9/13-28Reference
Ag front6.00-16Reference
Ag rear14.9/13-28Reference
Ag front7.50-16Reference
Length308 cmReference
Width173 cmReference
Height (hood)137 cmReference
Operating weight1950 kgReference
Ballasted weight3061 kgReference
Clearance (front axle)50 cmReference
Clearance (drawbar)36 cmReference
Front tread132 to 182 cmReference
Rear tread132 to 203 cmReference
Rear tread152 to 203 cmReference
4600 Serial Numbers
1969900001Reference
1970900312Reference
1971900422Reference
FAQ: How to read a serial number table.Reference
Test results
Gasoline 6-speed 2WDSeptember 2 - 11, 1969Link: Nebraska Tractor Test 1019 fileReference
PTO performanceReference
Fuel use15.1 l/hourReference
Fuel use14.0 l/hourReference
Drawbar performanceReference
Gear 3 used for power test.Reference
Max pull2458 kgReference
Gear 1 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.