M-R-S
M-R-S A-80B
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.
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 |