David Brown

David Brown 4600 Selectamatic

The David Brown 4600 Selectamatic is a utility tractor produced from 1968 to 1971. It features a 2.7L 3-cylinder gasoline engine with an estimated 51.1 hp engine power. The tractor offers 6-speed and 12-speed gear transmission options, two-wheel drive, and a Selectamatic hydraulic system. It was built in Meltham Mills, Huddersfield, England, and originally priced at $4,600 in 1971. The tractor includes a live rear PTO with 540/1000 RPM options and a rear hitch with position and draft control. It has an operating weight of 4300 lbs and various tire options for agricultural use.

Power51 hp[P]

Founded1968 - 1971

Model4600

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Technical Specifications

Detailed specifications and technical data for David Brown 4600 Selectamatic

Power

PTO (tested)	46.05 hp (34.3 kW)
PTO (claimed)	46 hp (34.3 kW)
Drawbar (tested)	38.34 hp (28.6 kW)

Tires

Ag rear	14.9/13-28
Ag front	6.00-16, 7.50-16

Engine

Type	gasoline, 3-cylinder, liquid-cooled
Model	David Brown 2.7L 3-cyl gasoline
Torque	140 lb-ft (189.8 Nm)
Rated RPM	2200
Torque RPM	1400
Air cleaner	oil bath
Bore/Stroke	3.939x4.500 inches (100 x 114 mm)
Compression	7.5:1
Displacement	164.4 ci (2.7 L)
Oil capacity	6.75 qts (6.4 L)
Operating RPM	700-2200
Starter volts	12
Coolant capacity	11 qts (10.4 L)

Capacity

Fuel	13.75 gal (52.0 L)
Hydraulic system	6 gal (22.7 L)

Dimensions

Width	68.375 inches (min) (173 cm)
Length	121.5 inches (308 cm)
Wheelbase	79.75 inches (202 cm)
Rear tread	52 to 80 inches (132 to 203 cm), 60 to 80 inches (152 to 203 cm) (PAVT)
Front tread	52 to 72 inches (132 to 182 cm)
Height (hood)	54 inches (137 cm)
Ballasted weight	6750 lbs (3061 kg)
Operating weight	4300 lbs (1950 kg)
Clearance (drawbar)	14.25 inches (36 cm)
Clearance (front axle)	19.75 inches (50 cm)

Hydraulics

Type	Selectamatic
Valves	0 to 2
Capacity	6 gal (22.7 L)
Pressure	2000 psi (137.9 bar)
Pump flow	7.3 gpm (27.6 lpm)

Mechanical

Drive	Two-wheel drive
Brakes	Expanding shoe brakes
Steering	manual, power-assist optional
Final drives	spur gear
Operator station	Open operator station
Differential lock	rear diff lock standard

Production

Type	Utility tractor
Built in	Meltham Mills, Huddersfield, England
Original price	$4,600 (1971)
Years produced	1968 - 1971

Transmission

Type	gear
Clutch	dry disc
Oil capacity	24 qts (22.7 L)
Gears (6-speed)	6 forward and 2 reverse
Gears (12-speed)	12 forward and 4 reverse
Transmission options	6-speed gear, 12-speed gear

Tractor hitch