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M-R-S A-80B

M-R-S A-80B tractor
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The M-R-S A-80B is a four-wheel drive (4WD) tractor produced by M-R-S from 1967 to 1980. It features a Detroit Diesel 4.6L 4-cylinder liquid-cooled engine delivering 141 hp (105.1 kW) with a 20-speed transmission. The tractor has a wheelbase of 118 inches and is equipped with agricultural tires sized 18.4-26, 18.00-26, or 23.1-26. It offers power four-wheel steering and an open operator station with an optional cab featuring air-conditioning. Built in Flora, Mississippi, USA, the A-80B is designed for heavy-duty farm work with a maximum weight of 17,000 lbs.
M-R-S A-80BM-R-S tractors4WD tractorDetroit Diesel 4-71 enginefarm tractor specifications20-speed transmissionagricultural tires
Power141 hp
Founded1967 - 1980
ModelA-80B

Technical Specifications

Detailed specifications and technical data for M-R-S A-80B

Power

Engine:141 hp (105.1 kW)
Drawbar (claimed):123 hp (91.7 kW)

Tires

Ag rear:18.4-26, 18.00-26, 23.1-26
Ag front:18.4-26, 18.00-26, 23.1-26

Engine

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

Dimensions

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

Hydraulics

Pump flow:20 gpm (75.7 lpm)

Mechanical

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

Production

Type:Four-wheel Drive (4WD) tractor
Built in:Flora, Mississippi, USA
Manufacturer:M-R-S
Years produced:1967 - 1980

Transmission

Gears:20 forward and 4 reverse
Clutch:381mm dry disc