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Years in Production / 1961–1980

David Brown

990

Explore the specifications, hardware, and original references for the David Brown 990.

David Brown 990 Implematic tractor - geograph.org.uk - 4691903 — Richard Law, CC BY-SA 2.0. Resized; converted to WebP. David Brown 990 Implematic tractor by Richard Law · Richard Law · CC BY-SA 2.0 commons.wikimedia.org source ↗

52hp

Source index power

2WD Only

Drive

1961–1980

Production years

David Brown

Manufacturer

990 / 01

At a glance

Production

Utility tractor

Built in Meltham Mills, Huddersfield, England

Manufacturer
David Brown

Mechanical

Two-wheel drive

Differential mechanical expanding shoe brakes

Open operator station.

Differential Lock
mechanical rear
Steering
manual
Steering
hydrostatic power (optional)

Hydraulics

Type
open center
Pressure
2000 psi137.9 bar
Total Flow
7.4 gpm28.0 lpm

Hitch

Rear Type
II/I

Pto

Rear Pto
transmission
Rear Pto
live (optional)
Clutch
dry disc
Rear Type
540/1000 (1.375)
Engine Rpm
540@1800 (Low)
Engine Rpm
540@1100 (High)
Engine Rpm
1000@2000

Electrical

Charging System
generator
Batteries
2
Battery Volts
6

990 / 02

Under the hood

Engine Detail

David Brown

diesel

4-cylinder

liquid-cooled

Displacement
185.8 ci3.0 L
Bore Stroke
3.625x4.50 inches92 x 114 mm
Power
52 hp38.8 kW
Air Cleaner
oil bath
Compression Ratio
17:1
Rated Rpm
2200
Operating Rpm
700-2200
Starter Volts
12
Oil Capacity
7.8 qts7.4 L
Coolant Capacity
14.4 qts13.6 L
Fuel Type
diesel
Cylinders
4
Cooling
liquid-cooled

Engine Options

David Brown 3.0L 4-cyl diesel

Fuel Tank
13.74 gal52.0 L

990 / 03

Gears & controls

Transmission (Option 1)

Three gears (1-3) plus reverse (R) in low and high ranges.

Transmission Type
gear
Gears
6 forward and 2 reverse
Clutch
279mm dry disc

Transmission (Option 2)

Twelve-speed transmission introduced in 1963.

Transmission Type
partially synchronized
Gears
12 forward and 4 reverse

990 / 04

Size. Stance. Footprint.

Dimensions

Length
118 in299 cm
Width
67 in170 cm
Height
56 in142 cm
Wheelbase
76.75 in194 cm

Dimensions And Tires

Wheelbase
76.75 inches194 cm
Weight
4272 to 4312 pounds
Front Tire
6.00-16
Rear Tire
11-32

Tires And Tracks

Standard Tires Ag
Front: 6.00-16. Rear: 11-32

990 / 05

Tractor Photos

David Brown 990 Implematic tractor - geograph.org.uk - 4691903 — Richard Law, CC BY-SA 2.0. Resized; converted to WebP. David Brown 990 Implematic tractor by Richard Law · Richard Law · CC BY-SA 2.0 commons.wikimedia.org source ↗

See it in action

Videos

Watch David Brown 990 videos from their original YouTube creators.

Old-school David Brown tractor 990 Selectamatic review | Farms & Farm Machinery

Video by TradeFarmMachinery

Watch on YouTube ↗

990 / 07

Tests (NTTL)

Nebraska Tractor Test 903

3L diesel 6-speed 2WDJune 11 - 19, 1965

PTO performance

Drawbar performance

Gear 3 used for power test.

Gear 1 used for pull test.

Id
903
Power At Rated Engine Speed
51.60 hp38.5 kW
Fuel Use
3.4 gal/hour12.9 l/hour
Fuel Use
3.0 gal/hour11.4 l/hour
Power At Rated Pto Speed
48.49 hp36.2 kW
Max Power
43.47 hp32.4 kW
Max Pull
6,039 lbs2739 kg

David Brown 990 · photo 1 / 1

David Brown 990 Implematic tractor - geograph.org.uk - 4691903

David Brown 990 Implematic tractor - geograph.org.uk - 4691903 — Richard Law, CC BY-SA 2.0. Resized; converted to WebP. David Brown 990 Implematic tractor by Richard Law · Richard Law · CC BY-SA 2.0 commons.wikimedia.org source ↗