M-R-S A-80B

The M-R-S A-80B is a tractor produced by M R S. It is equipped with a 283.7 ci 4.6 L engine. The rated power output is 141 hp 105.1 kW. Transmission: 20 forward and 4 reverse. Drive type: 4x4 4WD. Operating weight: 17000 lbs 7711 kg.

Overview

	1967 - 1980 Four-wheel Drive (4WD) tractor
1967 - 1980
Four-wheel Drive (4WD) tractor

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

M-R-S A-80B Engine
Detroit Diesel 4.6L 4-cyl diesel
Engine details ...

M-R-S A-80B Transmission
20-speed
Transmission details ...

M-R-S A-80B Power
Engine	141 hp 105.1 kW
Drawbar (claimed)	123 hp 91.7 kW

Mechanical
Drive	4x4 4WD
Power four-wheel steering
Open operator station. Cab optional with available air-conditioning..

Hydraulics
Pump flow	20 gpm 75.7 lpm

Dimensions & Tires
Wheelbase	118 inches 299 cm
Front tire	18.4-26
Rear tire	18.4-26
Full dimensions and tires ...

References
Red Book 1969 published by Implement & Tractor

Engine

Engine Detail — 283.7 ci / 4.6 L Diesel

Manufacturer	Detroit Diesel 4-71
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	283.7 ci 4.6 L
Bore/Stroke	4.25x5.00 inches 108 x 127 mm
Power	141 hp 105.1 kW
Rated RPM	2100
Torque	366 lb-ft 496.3 Nm
Torque RPM	1600
Starter type	electric
Oil capacity	15 qts 14.2 L
Coolant capacity	42 qts 39.7 L

Transmission

Transmission — 20 forward and 4 reverse

Gears	20 forward and 4 reverse
Clutch	381mm dry disc

Dimensions

M-R-S A-80B Tires
Ag front	18.4-26
Ag rear	18.4-26
Ag front	18.00-26
	23.1-26
Ag rear	18.00-26
	23.1-26

Dimensions
Wheelbase	118 inches 299 cm
Length	195 inches 495 cm
Width	111 inches 281 cm
Height	117 inches 297 cm
Max weight	17000 lbs 7711 kg
Ground clearance	14 inches 35 cm
Front tread	80 inches 203 cm
Rear tread	80 inches 203 cm

Photos

M-R-S A-80B tractor photo