M-R-S
A-80B
Farm tractor · 1967–1980 · 141 hp
M-R-SA-80B
The M-R-S A-80B is a farm tractor manufactured from 1967 to 1980. It features a Detroit Diesel 4-71 engine, and power four-wheel steering.
Engine
| Engine | Detroit Diesel 4-71 |
|---|---|
| Fuel Type | diesel |
| Cylinders | 4 |
| Cooling | liquid-cooled |
| Displacement | 283.7 ci (4.6 L) |
| Bore | 4.25 in (108 mm) |
| Stroke | 5 in (127 mm) |
| Power Gross | 141 hp (105.1 kW) |
| Power Rated | 141 hp (105.1 kW) |
| Power Drawbar | 123 hp (91.7 kW) |
| Torque Peak | 366 lb-ft (496.3 Nm) |
| Torque Peak | 1,600 RPM |
| Starter Type | electric |
| Oil Capacity | 15 qts (14.2 L) |
| Coolant Capacity | 42 qts (39.7 L) |
| Manufacturer | Detroit Diesel |
| Rated | 2,100 RPM |
Transmission
| Gears | 20 forward and 4 reverse |
|---|---|
| Clutch | 381mm dry disc |
| Available Options | 20-speed |
Hydraulics
| Pump Flow | 20 gpm (75.7 lpm) |
|---|
Dimensions
| Length | 195 in (495 cm) |
|---|---|
| Width | 111 in (281 cm) |
| Height | 117 in (297 cm) |
| Wheelbase | 118 in (299 cm) |
| Ground Clearance | 14 in (35 cm) |
| Front Tread | 80 in (203 cm) |
| Rear Tread | 80 in (203 cm) |
Tires & Tracks
| Front Ag | 18.4-26, 18.00-26 |
|---|---|
| Rear Ag | 18.4-26, 18.00-26, 23.1-26 |
Steering
| Type | power four-wheel |
|---|
Cab
| Cab | optional with available air-conditioning |
|---|