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M-R-S A-90 Specs ( 1962-1963 )

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Overview

The M-R-S A-90 is a heavy-duty 4x4 farm tractor manufactured in Flora, Mississippi, featuring a 123 hp Cummins 6.6L 6-cylinder diesel engine. This robust 24,000 lb machine utilizes power four-wheel steering and a 10-speed transmission to deliver 90 claimed drawbar horsepower for demanding agricultural tasks.

Ideal Applications

Heavy-Duty Traction: With a massive 24,000 lb weight and 4x4 drive, this tractor is designed to provide maximum stability and traction for high-drawbar tasks.
Advanced Maneuverability: The power four-wheel steering system allows operators to more effectively control this large-scale machine across its 100-inch wheelbase.
Variable Speed Operations: A transmission offering 10 forward and 2 reverse gears enables precise speed selection to match the specific needs of various field applications.

Production

Description Built in Flora, Mississippi, USA
Drive type Four-wheel Drive (4WD) tractor
Manufacturer M-R-S

Engine

Engine type Cummins 6.6L 6-cyl diesel
Bore/Stroke 4.125x5.00 inches (105 x 127 mm)
Description Cummins JN-130-CI / diesel / 6-cylinder / liquid-cooled
Displacement 401 ci (6.6 L)
Power 123 hp (91.7 kW)
Rated RPM 2200
Starter type electric
Drawbar (claimed) 90 hp (67.1 kW)

Transmission

Gears 10 forward and 2 reverse
Transmission type 10-speed

Mechanical

Cab Open operator station.
Description Power four-wheel steering
Drive 4x4 4WD

Dimensions & Tires

Front tread 75 inches (190 cm)
Ground clearance 16 inches (40 cm)
Height 114 inches (289 cm)
Rear tread 75 inches (190 cm)
Weight 24000 lbs (10886 kg)
Wheelbase 100 inches (254 cm)
Front tire 18.4x26
Rear tire 18.4x26
Weight 24000 lbs (10886 kg)
Wheelbase 100 inches (254 cm)
Ag front 18.4x26
Ag rear 18.4x26