David Brown 990 Implematic Utility tractor Specs & Features

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David Brown 990 Implematic Utility tractor Technical Specifications

David Brown 990 Implematic is a Row-Crop tractor that was produced by the John Deere between 1961 – 1980.

Below you will find detailed technical specifications for David Brown 990 Implematic covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

David Brown 990 Implematic Production

Manufacturer:
Manufacturer:	David Brown
Type:	Utility tractor
Factory:	Meltham Mills, Huddersfield, England

David Brown 990 Implematic Electrical

Charging system:	generator
Batteries:	2
Battery volts:	6

David Brown 990 Implematic Mechanical

Chassis:

4×2 2WD

Differential lock:

mechanical rear

Steering:

manual

hydrostatic power (optional)

Brakes:

differential mechanical expanding shoe

Cab:

Open operator station.

Transmissions:

6-speed gear

12-speed partially synchronized

Hydraulics

Type:	open center
Pressure:	2000 psi 137.9 bar
Total flow:	7.4 gpm 28.0 lpm

Tracktor Hitch

Rear Type:

II/I

Power Take-off (PTO)

Rear PTO:	transmission
	live (optional)
Clutch:	dry disc
Rear RPM:	540/1000 (1.375)
Engine RPM:	540@1800 (Low) 540@1100 (High) 1000@2000

David Brown 990 Implematic Engine detail

Engine Detail
David Brown
diesel
4-cylinder
liquid-cooled
Displacement:	185.8 ci 3.0 L
Bore/Stroke:	3.625×4.50 inches 92 x 114 mm
Power:	52 hp 38.8 kW
Air cleaner:	oil bath
Compression:	17:1
Rated RPM:	2200
Operating RPM:	700-2200
Starter volts:	12
Oil capacity:	7.8 qts 7.4 L
Coolant capacity:	14.4 qts 13.6 L

David Brown 990 Implematic Transmission overview

Engine Oil

Type:	gear
Gears:	6 forward and 2 reverse
Clutch:	279mm dry disc
Three gears (1-3) plus reverse (R) in low and high ranges.

David Brown 990 Implematic Dimensions

Wheelbase:	76.75 inches 194 cm
Length:	118 inches 299 cm
Width:	67 inches 170 cm
Height (hood):	56 inches 142 cm
Clearance (front axle):	20 inches 50 cm
Front tread:	52/56/60/64/68/72/76 inches 132/142/152/162/172/182/193 cm
Rear tread:	52/56/60/64/68/72/76 inches 132/142/152/162/172/182/193 cm

David Brown 990 Weight
Operating:	4272 lbs 1937 kg
	4312 lbs 1955 kg (live PTO)
Ballasted:	5880 lbs 2667 kg

David Brown 990 Implematic Tests

Nebraska Tractor Test 903

Nebraska Tractor Test 903
3L diesel 6-speed 2WD June 11 – 19, 1965 Link: Nebraska Tractor Test 903 file
PTO performance
Power at rated engine speed:	51.60 hp 38.5 kW
Fuel use:	3.4 gal/hour 12.9 l/hour
Power at rated PTO speed:	48.49 hp 36.2 kW
Fuel use:	3.0 gal/hour 11.4 l/hour
Drawbar performance
Max power:	43.47 hp 32.4 kW
Fuel use:	3.4 gal/hour 12.9 l/hour
Gear 3 used for power test.
Max pull:	6,039 lbs 2739 kg
Gear 1 used for pull test.

FAQ

Is David Brown 990 Implematic a good tractor?

The David Brown 990 Implematic is one of the great tractors in the David Brown stable, and it has earned David Brown a fantastic reputation.

How much oil does a David Brown 990 Implematic take?

Check out the David Brown 990 Implematic oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year David Brown made the ?

The David Brown 990 Implematic was an agricultural tractor model made from 1961 – 1980