David Brown 990 Implematic

Last Updated: June 2024

Overview

The David Brown 990 Implematic, produced between 1961 to 1965, is a 2WD utility tractor designed for various agricultural tasks. The tractor has a 4-cylinder, naturally aspirated diesel engine which is liquid-cooled and has a power output of 52HP at 2200 RPM. This model comes with either a gear type or partially synchronized transmission, with the gear type featuring 6 forward and 2 reverse gears, and the partially synchronized one featuring 12 forward and 4 reverse gears. Complementing these features are the differential mechanical expanding shoe brakes and an optional live or transmission PTO, providing operators with versatility in different agricultural applications. All of these features, coupled with the model’s open operator station and robust build, make the David Brown 990 Implematic an efficient and reliable utility tractor.
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Key Specifications

Category: Utility

Power Output: 52 hp

Transmission: Gear / Partially Synchronized

Drive Type: 2WD

Operating Weight: 4272 lbs

Fuel Type: Diesel

David Brown 990 Implematic vs. Similar Tractors

Power Output
Average
Greater than 50% of similar tractors.
Operating Weight
Average
Greater than 39% of similar tractors.

Technical Specifications

Engine

Manufacturer
David Brown
Model
-
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Valve Configuration
-
Fuel Type
Diesel
Induction Type
Natural aspiration
Cylinders
4
Displacement (ci)
185.8 ci
Bore (in)
3.62 in
Stroke (in)
4.49 in
Rated RPM
2200 RPM
Power Output (hp)
52 hp

Transmission

Type
Gear / Partially Synchronized
Forward Gears
12-Jun
Reverse Gears
4-Feb
Total Gears
-

Dimensions

Length (in)
117.7
Width (in)
66.9
Height (in)
55.9
Operating Weight (lb)
4272 lbs

Power Take-Off (PTO)

PTO Type
Transmission or Live (Optional)
PTO Speed 1 (rpm)
540 rpm
PTO Speed 2 (rpm)
1000 rpm
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x2 2WD
Drive Type
2WD
Steering Type
Manual or Hydrostatic Power (Optional)
Coolant Capacity (qts)
14.4 qts
Front Tire Diameter (in)
-
Front Tire Width (in)
-
Rear Tire Diameter (in)
-
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Standard Ag
Manufacture - End Year
1965
Hitch Type
-
Hitch Category
II/I Category
Hitch Position
Rear
Hitch Capacity (lb)
-
Operator Station Type
Open Operator Station
Starter Type
Electric
Brake Type
Differential Mechanical Expanding Shoe
Hydraulic System Type
Open Center

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