David Brown 3800 tractor specifications

1968 - 1971

1968 - 1971 Utility tractor

Series:

Series:3800 Selectamatic → 4600

1968 - 1971

Utility tractor

Series:

3800 ←

4600 Selectamatic

Production

Production
Manufacturer:	David Brown
Type:	Utility tractor
Factory:	Meltham Mills, Huddersfield, England
Original price:	$4,600 (1971)

David Brown 4600 Power

David Brown 4600 Power
PTO (claimed):	46 hp 34.3 kW
Drawbar (tested):	38.34 hp 28.6 kW
PTO (tested):	46.05 hp 34.3 kW
power test details ...

David Brown 4600 Engine

David Brown 4600 Engine
David Brown 2.7L 3-cyl gasoline
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Final drives:	spur gear
Differential lock:	rear diff lock standard
Steering:	manual
	power-assist optional
Brakes:	expanding shoe
Cab:	Open operator station.
Transmissions:	6-speed gear
	12-speed gear
Transmission details ...

Capacity

Capacity
Fuel:	13.75 gal 52.0 L
Hydraulic system:	6 gal 22.7 L

Hydraulics

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

Tractor hitch

Tractor hitch
Rear Type:	II/I
Control:	position and draft control
Rear lift (at ends):	1800 lbs 816 kg (working)
	2500 lbs 1134 kg (static)

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	live
Rear RPM:	540/1000
Engine RPM:	540@1823 1000@2000

Dimensions & Tires

Dimensions & Tires
Wheelbase:	79.75 inches 202 cm
Weight:	4300 lbs 1950 kg
Front tire:	6.00-16
Rear tire:	14.9/13-28
Full dimensions and tires ...

4600 Serial Numbers

4600 Serial Numbers
1969:	900001
1970:	900312
1971:	900422
how to read serial numbers...

Production

Production Manufacturer:David Brown
Type:Utility tractor
Factory:Meltham Mills, Huddersfield, England
Original price:$4,000 (1971)

David Brown 3800 Power

David Brown 3800 Power PTO (claimed):39 hp
29.1 kW
Drawbar (tested):32.13 hp
24.0 kW
PTO (tested):39.16 hp
29.2 kW
power test details ...

1968 - 1971

Utility tractor

Series:

3800 Selectamatic

→ 4600

Nebraska Tractor Test 1018

Nebraska Tractor Test 1018
Gasoline 6-speed 2WD September 2 - 11, 1969 Link: Nebraska Tractor Test 1018 file
PTO performance
Power at rated engine speed:	39.16 hp 29.2 kW
Fuel use:	3.6 gal/hour 13.6 l/hour
Power at rated PTO speed:	37.24 hp 27.8 kW
Fuel use:	3.3 gal/hour 12.5 l/hour
Drawbar performance
Max power:	32.13 hp 24.0 kW
Fuel use:	3.4 gal/hour 12.9 l/hour
Gear 3 used for power test.
Max pull:	4419 lbs 2004 kg
Gear 1 used for pull test.

David Brown 3800 Engine

David Brown 3800 Engine David Brown 2.4L 3-cyl gasoline Engine details ...

1968 - 1971

Utility tractor

Series:

3800 Selectamatic

→ 4600

Engine Detail

Engine Detail
David Brown
gasoline
3-cylinder
liquid-cooled
Displacement:	146.1 ci 2.4 L
Bore/Stroke:	3.939x4.000 inches 100 x 102 mm
Air cleaner:	oil bath
Compression:	6.75:1
Rated RPM:	2200
Operating RPM:	700-2200
Torque:	115 lb-ft 155.9 Nm
Torque RPM:	1400
Starter volts:	12
Oil capacity:	6.75 qts 6.4 L
Coolant capacity:	9 qts 8.5 L

Mechanical

Mechanical Chassis:4x2 2WD
Final drives:spur gear
Differential lock:rear diff lock standard
Steering:manual
power-assist optional
Brakes:mechanical shoe
Cab:Open operating station.
Transmissions:6-speed gear
12-speed gear
Transmission details ...

1968 - 1971

Utility tractor

Series:

3800 Selectamatic

→ 4600

Transmissions overview

Transmissions overview
6-speed gear
12-speed gear

Transmission

Transmission
Type:	gear
Gears:	6 forward and 2 reverse
Clutch:	dry disc
Oil capacity:	24 qts 22.7 L

Speeds

Speeds

Transmission

Transmission
Type:	gear
Gears:	12 forward and 4 reverse
Clutch:	dry disc
Oil capacity:	24 qts 22.7 L

Capacity

Capacity Fuel:9.5 gal
36.0 L
Hydraulic system:6 gal
22.7 L

Hydraulics

Hydraulics Type:Selectamatic
Capacity:6 gal
22.7 L
Pressure:2000 psi
137.9 bar
Pump flow:7.3 gpm
27.6 lpm

Tractor hitch

Tractor hitch Rear Type:I
Control:position and draft control
Rear lift (at ends):1600 lbs
725 kg (working)
1950 lbs
884 kg (static)

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:live
Rear RPM:540/1000

Dimensions & Tires

Dimensions & Tires Wheelbase:76 inches
193 cm
Weight:3885 lbs
1762 kg
Front tire:6.00-16
Rear tire:13.6/12-28
Full dimensions and tires ...

1968 - 1971

Utility tractor

Series:

3800 Selectamatic

→ 4600

David Brown 3800 Tires

David Brown 3800 Tires
Ag front:	6.00-16
Ag rear:	13.6/12-28
Ag front:	14.9/13-24
	14.9/13-28

Dimensions

Dimensions
Wheelbase:	76 inches 193 cm
Length:	115.625 inches 293 cm
Width:	64.5 inches 163 cm (min)
Height (hood):	51.25 inches 130 cm
Operating weight:	3885 lbs 1762 kg
Ballasted weight:	5835 lbs 2646 kg
Clearance (front axle):	17.5 inches 44 cm
Clearance (drawbar):	11.75 inches 29 cm
Front tread:	48 to 72 inches 121 to 182 cm
Rear tread:	48 to 76 inches 121 to 193 cm
Rear tread:	60 to 80 inches 152 to 203 cm (PAVT)