| Manufacturer |
John Deere |
| Price |
- |
| Model |
3120 |
| Equipment Type |
Compact Utility Tractors |
| Factory |
Augusta, Georgia, USA |
JOHN DEERE 3120 POWER
ENGINE DETAIL
The John Deere 3120 tractor, powered by a Yanmar 3TNV84 diesel engine, offers a robust 29.5 hp and torque of 66.7 lb-ft at 1560 RPM, making it suitable for various mid-sized agricultural tasks. Its Tier II emission rating, coupled with a high compression ratio of 18.5:1, ensures efficient fuel combustion, but may limit use in regions with stricter regulations. The direct injection fuel system contributes to improved performance and lower emissions, though maintenance of oil (5.1 quarts) and coolant (5.6 quarts) levels is essential for optimal engine longevity.
| Description |
Yanmar 3TNV84 diesel 3-cylinder liquid-cooled |
| Displacement |
91.5ci / 1.5L |
| Bore/Stroke |
3.3x3.54inches / 84x 90mm |
| Emissions |
Tier II |
| Power |
29.5hp / 22.0kW |
| Fuel system |
direct injection |
| Compression |
18.5:1 |
| Rated RPM |
2600 |
| Torque |
66.7lb-ft / 90.4Nm |
| Torque RPM |
1560 |
| Starter volts |
12 |
| Oil capacity |
5.1qts / 4.8L |
| Coolant capacity |
5.6qts / 5.3L |
JOHN DEERE 3120 ENGINE
The John Deere 3120, equipped with a Yanmar 1.5L 3-cylinder diesel engine, offers a compact yet powerful solution for small to medium agricultural tasks, delivering reliable torque and fuel efficiency. One advantage is its robust build, suited for versatile applications like mowing and tilling, while challenges may include limited power output for heavy-duty operations compared to larger models. Ideal for hobby farms or landscapers, the 3120 excels in maneuverability and efficiency in confined spaces.
| Description |
Yanmar 1.5L 3-cyl diesel |
TRANSMISSION
The John Deere 3120 features a hydrostatic transmission system by Sauer-Danfoss, offering infinite speed selection in three ranges for forward and reverse, enhancing precision during varied tasks. Key advantages include standard cruise control and customizable settings like SpeedMatch and LoadMatch, which optimize operational efficiency by adjusting speed and RPMs according to load requirements. The primary challenge is the requirement to stop the tractor before shifting ranges, which may limit quick operational changes in dynamic field conditions.
| Transmission |
Sauer-Danfoss eHydro |
| Type |
hydrostatic |
| Gears |
infinite (3-range) forward and reverse |
| Description |
Controlled by two foot pedals and range shift lever. Tractor must be stopped before shifting ranges. Cruise control standard. SpeedMatch allows maximum speed to be limited. MotionMatch allows acceleration rate to be set. LoadMatch allows engine RPMs to be set, tractor will adjust speed to maintain RPMs |
SPEEDS
| Description |
With 11.2-24 rear tires |
MECHANICAL
The John Deere 3120 features a 4x4 MFWD configuration, providing enhanced traction and stability on varied terrain, which is advantageous for both agricultural and landscaping tasks. Its hydrostatic transmission allows for seamless speed control, making it user-friendly for operators in diverse scenarios. However, the folding ROPS may limit overhead protection compared to a fully enclosed cab, presenting potential safety considerations in hazardous environments.
| Chassis |
4x4 MFWD 4WD |
| Steering |
power |
| Brakes |
wet disc |
| Cab |
Two-post folding ROPS |
| Transmission |
hydrostatic |
CAPACITY
| Fuel |
13.5gal / 51.1L |
| Hydraulic system |
6.8gal / 25.7L |
HYDRAULICS
| Type |
open center |
| Capacity |
6.8gal / 25.7L |
| Valves |
5 |
| Pump flow |
8.6gpm / 32.6lpm |
| Total flow |
13.9gpm / 52.6lpm |
TRACTOR HITCH
| Rear Type |
I |
| Rear lift (at ends) |
2530lbs / 1147kg |
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540 |
| Mid PTO |
optional |
| Mid RPM |
2100 |
JOHN DEERE 3120 TIRES
The John Deere 3120 tractor exhibits versatility through its various tire configurations suited for agricultural, lawn/turf, and industrial applications. The agricultural tires (7-14 front, 11.2-24 rear) provide excellent traction and stability on uneven terrain, ideal for fieldwork. In contrast, the lawn/turf and industrial options prioritize ground protection and maneuverability, making it suitable for landscaping and construction tasks.
| Ag front |
7-14 |
| Ag rear |
11.2-24 |
| Lawn/turf front |
25x10.5LL-15 |
| Lawn/turf rear |
41x18LL-16.1 |
| Industrial front |
27x8.5-15 |
| Industrial rear |
43x16-20 |
DIMENSIONS
| Wheelbase |
68inches / 172cm |
| Length |
120.2inches / 305cm |
| Width |
52.4inches / 133cm *Minimum |
| Height (hood) |
57inches / 144cm |
| Height (ROPS) |
93.3inches / 236cm |
| Weight |
3000lbs / 1360kg |
| Clearance (rear axle) |
12.2inches / 30cm |
| Rear tread |
40.6/45.3/48.9/53.1/56.6inches / 103/115/124/134 / 143cm |
DIMENSIONS & TIRES
The John Deere 3120 tractor features a compact 68-inch wheelbase, enhancing maneuverability in tight spaces, ideal for small to mid-sized farms or landscaping applications. Weighing 3000 lbs (1360 kg), this tractor strikes a balance between stability and portability, making it suitable for varying terrain but may struggle with heavier loads compared to larger models. The combination of front tires (7-14) and rear tires (11.2-24) suggests improved traction and flotation, suitable for diverse ground conditions, though tire selection could impact ground disturbance in sensitive environments.
| Wheelbase |
68inches / 172cm |
| Weight |
3000lbs / 1360kg |
| Front tire |
7-14 |
| Rear tire |
11.2-24 |
ATTACHMENT OVERVIEW
60
| Type |
mid-mount John Deere 3-blade |
| Cutting width |
60inches / 152cm |
JOHN DEERE 300X LOADER
| Height (to pin) |
90inches / 228cm |
| Clearance, dumped bucket |
68.6inches / 174cm |
| Dump reach |
30.4inches / 77cm |
| Dump angle |
40° |
| Reach at ground |
54.4inches / 138cm |
| Rollback at ground |
21° |
| Rollback, raised |
103° |
| Breakout force (at pin) |
2855lbs / 1295kg |
| Breakout force (at 500mm) |
2032lbs / 921kg |
| Lift to full height (at pin) |
1360lbs / 616kg |
| Lift to full height (at 500mm) |
999lbs / 453kg |
| Lift to 1.5m (at pin) |
1700lbs / 771kg |
| Lift to 1.5m (at 500mm) |
1312lbs / 595kg |
| Bucket width |
61inches / 154cm |
| Attachment style |
Deere quick-attach |
| Raise time to height |
2.8 s |
| Bucket dump time |
4.1 s |
| Lowering time |
1.7 s |
| Rollback time |
1.7 s |
JOHN DEERE 300CX LOADER
| Height (to pin) |
102inches / 259cm |
| Clearance, dumped bucket |
79.6inches / 202cm |
| Dump reach |
22inches / 55cm |
| Dump angle |
41.1° |
| Reach at ground |
58.6inches / 148cm |
| Rollback at ground |
31° |
| Rollback, raised |
119° |
| Breakout force (at pin) |
3327lbs / 1509kg |
| Breakout force (at 500mm) |
2416lbs / 1095kg |
| Lift to full height (at pin) |
1598lbs / 724kg |
| Lift to full height (at 500mm) |
1122lbs / 508kg |
| Lift to 1.5m (at pin) |
2125lbs / 963kg |
| Lift to 1.5m (at 500mm) |
1649lbs / 747kg |
| Bucket width |
61inches / 154cm |
| Attachment style |
Deere quick-attach skid steer (optional) |
| Raise time to height |
3.6 s |
| Bucket dump time |
4.2 s |
| Lowering time |
2.1 s |
| Rollback time |
1.8 s |
JOHN DEERE 47 BACKHOE
| Backhoe type |
John Deere 47 Backhoe |
| Weight |
1047lbs / 474kg |
| 2-Foot flat digging depth |
90inches / 228cm |
| Reach from pivot |
114inches / 289cm |
| Loading height |
70inches / 177cm |
| Bucket Rotation |
180 |
| Swing Arc |
180 |
| Bucket force |
2840lbs / 1288kg |
| Dipperstick force |
2005lbs / 909kg |
3120 SERIAL NUMBERS
| 2005 |
110001 |
| 2006 |
210001 |
| 2007 |
310001 |
| 2008 |
410001 |
ELECTRICAL
| Ground |
negative |
| Charging amps |
40 |
| Battery CCA |
500 |
| Battery volts |
12 |
