John Deere 2120
The John Deere 2120 is a tractor produced by John Deere. It is equipped with a 219 ci 3.6 L engine. The listed engine power is Diesel (listed): 68 hp / 50.7 kW. Transmission: Hi-Lo. Operating weight: 6615 lbs 3000 kg.
Engine Power
Diesel (listed): 68 hp / 50.7 kW
Fuel & Capacities
19.5 gal
73.8 L
Transmission
Hi-Lo
Operating Weight
6615 lbs
3000 kg
Overview
 | 1969 - 1972 |
|---|
Production | |
|---|---|
Manufacturer | John Deere |
Factories | Mannheim, Baden-Württemberg, Germany |
Mexico | |
John Deere 2120 Engine | |
|---|---|
John Deere 3.6L 4-cyl diesel | |
Fuel tank | 19.5 gal
73.8 L |
Engine details ...  | |
John Deere 2120 Power | |
|---|---|
Engine | 68 hp
50.7 kW |
PTO (claimed) | 60 hp
44.7 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Final drives | planetary |
Differential lock | mechanical rear |
Open operator station. Cab optional. | |
Hydraulics | |
|---|---|
Type | closed center |
Pump flow | 12.4 gpm
46.9 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Rear lift | 4498 lbs
2040 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 |
Dimensions & Tires | |
|---|---|
Wheelbase | 86 inches
218 cm |
Weight | 6615 lbs
3000 kg |
Front tire | 7.50-16 |
Rear tire | 15.5-38 |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
Operator's Manual 145 Loader (OMW21474) | |
New 2020 and 2120 Tractors published in 1969, by John Deere |
Engine
Engine Detail — 219 ci / 3.6 L Diesel
Manufacturer | John Deere |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 219 ci
3.6 L |
Bore/Stroke | 4.02x4.33 inches
102 x 110 mm |
Power | 68 hp
50.7 kW |
Fuel system | direct injection |
Rated RPM | 2500 |
Torque | 51.3 lb-ft
69.6 Nm |
Torque RPM | 1500 |
Transmission
Transmission options | |
|---|---|
8-speed gear | |
16-speed two-speed power shift |
Transmission — 8 forward and 4 reverse gear
Type | gear |
Gears | 8 forward and 4 reverse |
With 18.4x30 rear tires. | |
 | |
Transmission — Hi-Lo
Transmission | Hi-Lo |
Type | two-speed power shift |
Gears | 16 forward and 8 reverse |
With 18.4x30 rear tires. | |
 | |
Dimensions
John Deere 2120 Tires | |
|---|---|
Ag front | 7.50-16 |
Ag rear | 15.5-38 |
Dimensions | |
|---|---|
Wheelbase | 86 inches
218 cm |
Length | 142 inches
360 cm |
Height | 96.5 inches
245 cm |
Weight | 6615 lbs
3000 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for John Deere 2120 based on its 68 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 7 to 8 ft (84-96 in)2.1 - 2.4 m | Heavy Duty | Heavy-duty twin spindle cutter for overgrown acreage. |
Rotary TillerSeedbed Prep | 78 to 84 in200 - 215 cm | Heavy Duty | Heavy commercial tiller with multi-speed gearbox. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
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 John Deere 2120.
Estimated Continuous Field Runtime: 5.5 hrs
Approximately 5.5 hours of continuous field operation at ~75% rated power on a full tank (19.5 gal / 73.8 L).
Estimated 75% Load Fuel Burn~3.5 gal/hr (13.4 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
John Deere 2120 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 2120.
Converted Equivalents:
Horsepower (HP)68 hp
Kilowatts (kW)50.7 kW
Metric Horsepower (PS / CV)68.9 PS
Direct Competitor Comparison
Compare John Deere 2120 against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 2120
Engine Power:Diesel (listed): 68 hp / 50.7 kW
★ Baseline Reference
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