NorTrac 250AS
The NorTrac 250AS is a tractor produced by Nortrac. It is equipped with a 127 ci 2.1 L engine. The listed engine power is Diesel (listed): 31 hp / 23.1 kW. Transmission: sliding gear. Operating weight: 4300 to 6620 pounds.
Engine Power
Diesel (listed): 31 hp / 23.1 kW
Fuel & Capacities
14 gal
53.0 L
Transmission
sliding gear
Operating Weight
6,620 lbs
3002 kg
Overview
 | 1986 - 1990
Utility tractorBelarus built
Utility tractor
Belarus built |
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Note: the NorTrac model 250AS is the same as the Belarus 250AS. The following data is from the 250AS listing. |
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Production | |
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Distributor | NorTrac |
Manufacturer | Belarus |
Utility tractor | |
Built in Minsk, Belarus | |
Original price was $8,000 in 1987 | |
NorTrac 250AS Engine | |
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Belarus 2.1L 2-cyl diesel | |
Engine details ...  |
NorTrac 250AS Transmission | |
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8-speed | |
Transmission details ...  |
NorTrac 250AS Power | |
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Engine | 31 hp
23.1 kW |
Drawbar (claimed) | 22 hp
16.4 kW |
PTO (claimed) | 24 hp
17.9 kW |
Drawbar (tested) | 23.87 hp
17.8 kW |
PTO (tested) | 28.70 hp
21.4 kW |
Performance test details ...  | |
Mechanical | |
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Two-wheel drive | |
Steering | mechanical |
power OptOptional | |
Differential mechanical band brakes | |
Open operator station. ROPS available. | |
Capacity | |
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Fuel | 14 gal
53.0 L |
Hydraulic system | 2 gal
7.6 L |
Hydraulics | |
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Type | open center |
Capacity | 2 gal
7.6 L |
Pressure | 2060 psi
142.0 bar |
Valves | 1 |
Total flow | 4.2 gpm
15.9 lpm |
Tractor hitch | |
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Rear Type | II |
Rear lift (at ends) | 1322 lbs
599 kg |
Power Take-off (PTO) | |
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Rear PTO | live |
Rear PTO Type | 540 |
Dimensions & Tires | |
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Wheelbase | 69 inches
175 cm |
Weight | 4300 to 6620 pounds |
Front tire | 6.00-16 |
Rear tire | 10-28 |
Full dimensions and tires ...  | |
Electrical | |
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Ground | negative |
Charging system | alternator |
Charging amps | 50 |
Batteries | 2 |
Battery CCA | 900 |
Battery volts | 6 |
Engine
Note: the NorTrac model 250AS is the same as the Belarus 250AS. The following data is from the 250AS listing. |
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Engine Detail — 127 ci / 2.1 L Diesel
Manufacturer | Belarus D-120 |
Fuel Type | Diesel |
Configuration | 2-cylinder, air-cooled |
Displacement | 127 ci
2.1 L |
Bore/Stroke | 4.134x4.724 inches
105 x 120 mm |
Power | 31 hp
23.1 kW |
Air cleaner | oil bath |
Compression | 16.5:1 |
Rated RPM | 1800 |
Starter volts | 12 |
Intake valve clearance | 0.012 inches*Cold
0.305 mm |
Exhaust valve clearance | 0.012 inches*Cold
0.305 mm |
Oil capacity | 7.4 qts
7.0 L |
Transmission
Note: the NorTrac model 250AS is the same as the Belarus 250AS. The following data is from the 250AS listing. |
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Transmission — sliding gear
Transmission | sliding gear |
Gears | 8 forward and 6 reverse |
Oil capacity | 10.6 qts
10.0 L |
Transmission operated with clutch and two levers. The mode selection lever chooses between forward, reverse, or netural. The range selection lever chooses one of eight gears, although SL1 and SL2 are forward only. | |
With 10x28 rear tires. | |
 | |
Dimensions
Note: the NorTrac model 250AS is the same as the Belarus 250AS. The following data is from the 250AS listing. |
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NorTrac 250AS Tires | |
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Ag front | 6.00-16 |
Ag rear | 10-28 |
Dimensions | |
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Wheelbase | 69 inches
175 cm |
Length | 120 inches
304 cm |
128 inches (three-point)
325 cm | |
Width | 58 inches
147 cm |
Height (hood) | 47 inches
119 cm |
Shipping weight | 4,300 lbs
1950 kg |
Operating weight | 6,620 lbs
3002 kg |
Ground clearance | 17 inches
43 cm |
Front tread | 47 to 55 inches
119 to 139 cm |
Rear tread | 47.1 to 57.7 inches
119 to 146 cm |
Tests
Note: the NorTrac model 250AS is the same as the Belarus 250AS. The following data is from the 250AS listing. |
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Nebraska Tractor Test 1200 | |
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Diesel 6-speed 2WD
December 4 - 17, 1975
Link: Nebraska Tractor Test 1200 file | |
PTO performance | |
Power at rated engine speed | 28.70 hp
21.4 kW |
Fuel use | 2.0 gal/hour
7.6 l/hour |
Power at rated PTO speed | 28.15 hp
21.0 kW |
Fuel use | 2.0 gal/hour
7.6 l/hour |
Drawbar performance | |
Max power | 23.87 hp
17.8 kW |
Fuel use | 2.0 gal/hour
7.6 l/hour |
Gear 2 used for power test. | |
Max pull | 2570 lbs
1165 kg |
Gear 1 used for pull test. | |
Photos
NorTrac 250AS tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Nortrac 250AS based on its 31 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 5 ft (60 in)1.5 m | Medium Duty | Pasture maintenance and weeds up to 1.5" diameter. |
Rotary TillerSeedbed Prep | 54 to 60 in135 - 150 cm | Medium Duty | Thorough seedbed preparation in orchards and vegetable plots. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Nortrac 250AS.
Estimated Continuous Field Runtime: 8.7 hrs
Approximately 8.7 hours of continuous field operation at ~75% rated power on a full tank (14 gal / 53 L).
Estimated 75% Load Fuel Burn~1.6 gal/hr (6.1 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Nortrac 250AS Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Nortrac 250AS.
Converted Equivalents:
Horsepower (HP)31 hp
Kilowatts (kW)23.1 kW
Metric Horsepower (PS / CV)31.4 PS
Direct Competitor Comparison
Compare NorTrac 250AS against same-era industry alternatives in the same horsepower class.
Current Model
Nortrac
NorTrac 250AS
Engine Power:Diesel (listed): 31 hp / 23.1 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 140
Engine Power:28
Production Years:1958 - 1979
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