| Manufacturer | John Deere |
| Price | 36,000(USD) |
| Model | 6120 |
| Equipment Type | Utility Tractors |
| Factory | Mannheim, Baden-Württemberg, Germany |
OCED TRACTOR TEST 2028 2
| Description | Diesel 12-speed 4WD/February 2002 - May 2002, /Link: OCED Tractor Test 2028 file/PTO performance/Drawbar performance |
| Max power | 53.5 hp/39.9 kW |
| Fuel use | 4.4 gal/hour/16.7 l/hour |
| Power at rated engine speed | 66.9 hp/49.9 kW |
| Power at rated PTO speed | 69.3 hp/51.7 kW |
| Max pull | 7,395 lbs/3354 kg |
JOHN DEERE 6120 POWER
| Engine | 80 hp/59.7 kW |
| PTO (claimed) | 65 hp/48.5 kW |
| Drawbar (tested) | 53.5 hp/39.9 kW |
| PTO (tested) | 72.3 hp/53.9 kW |
ENGINE DETAIL 1
The John Deere 6120 features a robust PowerTech 4045TL070 turbocharged diesel engine, offering 80 hp and 195 lb-ft of torque, which peaks at 1500 RPM, making it suitable for agricultural applications requiring moderate power. The tractor has a compact displacement of 4.5 L with an effective bore/stroke ratio, conducive to efficient combustion and fuel economy, albeit with Tier I emissions compliance, posing potential regulatory challenges in stricter environments. The dry air cleaner and moderate coolant capacity (14.4 quarts) provide maintenance advantages but may require attention during extended operation under high loads to prevent overheating.
| Description | John Deere PowerTech 4045TL070/turbocharged diesel/4-cylinder/liquid-cooled |
| Displacement | 276 ci/4.5 L |
| Bore/Stroke | 4.19x5.00 inches/106 x 127 mm |
| Emissions | Tier I |
| Power | 80 hp/59.7 kW |
| Air cleaner | dry |
| Rated RPM | 2300 |
| Idle RPM | 875-2510 |
| Operating RPM | 1000-2300 |
| Torque | 195 lb-ft/264.4 Nm |
| Torque RPM | 1500 |
| Firing order | 1-3-4-2 |
| Starter volts | 12 |
| Starter power | 4 hp/3.0 kW |
| Coolant capacity | 14.4 qts/13.6 L |
| Intake valve clearance | 0.014 inches/0.356 mm |
| Exhaust valve clearance | 0.018 inches/0.457 mm |
ENGINE OIL 1
The John Deere 6120's oil capacity of 16.8 quarts (15.9 liters) allows for adequate lubrication and cooling of the engine under various operational conditions. A 500-hour oil change interval is optimal for maintaining engine performance and longevity, though it necessitates regular monitoring of oil quality, especially in demanding applications. Ensure to use the recommended oil type to maximize engine efficiency and reduce wear.
| Oil capacity | 16.8 qts/15.9 L |
| Oil change | 500 h/ |
ENGINE DETAIL 2
The John Deere 6120, equipped with a turbocharged PowerTech 4045TL271 diesel engine, delivers 80 hp and 256 lb-ft of torque at 1500 RPM, making it suitable for medium-duty tasks like tillage and planting. Its Tier II emissions compliance may be less desirable in strict regulatory environments, where newer models provide better emissions control. With a reliable coolant capacity of 14.4 quarts, maintenance of optimal operating temperatures is facilitated, although owners should monitor valve clearances at 0.014 inches for intake and 0.018 inches for exhaust to ensure efficient engine performance.
| Description | John Deere PowerTech 4045TL271/turbocharged diesel/4-cylinder/liquid-cooled |
| Displacement | 276 ci/4.5 L |
| Bore/Stroke | 4.19x5.00 inches/106 x 127 mm |
| Emissions | Tier II |
| Power | 80 hp/59.7 kW |
| Air cleaner | dry |
| Rated RPM | 2300 |
| Idle RPM | 845-2465 |
| Operating RPM | 1000-2300 |
| Torque | 256 lb-ft/347.1 Nm |
| Torque RPM | 1500 |
| Firing order | 1-3-4-2 |
| Coolant capacity | 14.4 qts/13.6 L |
| Intake valve clearance | 0.014 inches/0.356 mm |
| Exhaust valve clearance | 0.018 inches/0.457 mm |
ENGINE OIL 2
The John Deere 6120 has an oil capacity of 16.8 quarts (15.9 liters), which necessitates careful monitoring to prevent engine wear. Regular oil changes every 500 hours are crucial for maintaining optimal performance and extending engine life, though this could be a challenge for operators with high usage rates. In scenarios requiring prolonged operational periods, plan for scheduled maintenance to ensure consistent efficiency and reliability of the tractor.
| Oil capacity | 16.8 qts/15.9 L |
| Oil change | 500 h/ |
JOHN DEERE 6120 ENGINE
The John Deere 6120 is equipped with a 4.5L 4-cylinder diesel engine, providing efficient performance for various agricultural tasks. Its 30.1-gallon fuel tank ensures extended operation between refuels, making it ideal for larger fields or prolonged work periods. However, operators should consider the tractor's weight and size, which may affect maneuverability in tighter farming environments.
| Description | John Deere 4.5L 4-cyl diesel |
| Fuel tank | 30.1 gal/113.9 L |
TRANSMISSIONS OVERVIEW
The John Deere 6120 features a highly versatile transmission with options for 12-speed fully synchronized, 16-speed power shuttle, and 24-speed partial power shift configurations, allowing for smooth operation across various terrains and tasks. This adaptability enhances both productivity and maneuverability, making it ideal for field work and transport applications. However, the complexity of the transmission system may require more maintenance and operator training to optimize performance effectively.
| Description | 12-speed fully synchronized/16-speed power shuttle/16-speed partial power shift/24-speed partial power shift |
TRANSMISSION 1
The John Deere 6120 tractor features a fully synchronized SyncroPlus transmission, allowing for smooth gear shifts (12 forward, 4 reverse) even under load, which enhances operational efficiency. The wet disc clutch provides reliable performance and longevity, while an optional creeper gear extends the operational versatility with an additional nine forward and three reverse speeds, ideal for tasks requiring precise control, such as tilling or planting. Key considerations include ensuring proper maintenance of the hydraulic system for optimal clutch performance and selecting the appropriate gear for varying field conditions to maximize productivity.
| Transmission | John Deere SyncroPlus |
| Type | fully synchronized |
| Gears | 12 forward and 4 reverse |
| Clutch | wet disc |
| Oil capacity | 55 qts/52.1 L/JD HyGard |
| Description | Three gears (1-3) plus reverse (R) in four ranges (A-D). Directional, gear, and range changes are synchronized and may be shifting while moving by using the clutch. Optional creeper adds an additional nine forward and three reverse speeds for a total of 21-forward and 7-reverse. |
SPEEDS 1
| Description | With 18.4x30 R1 rear tires./ |
TRANSMISSION 2
The John Deere 6120 features a SyncroPlus Power Reverser transmission, providing efficient power shuttle shifting with 16 forward and reverse gears, which enhances maneuverability during field operation. The wet disc clutch allows for smooth engagement and prolongs lifespan under heavy usage, making it suitable for various agricultural tasks. However, the limitation to open-station (ROPS) setups may impact operator comfort in adverse weather conditions.
| Transmission | John Deere SyncroPlus Power Reverser |
| Type | power shuttle |
| Gears | 16 forward and reverse |
| Clutch | wet disc |
| Oil capacity | 55 qts/52.1 L/JD HyGard |
| Description | Four gears (1-4) in four ranges (A-D) with left-hand reverser. Gear and range shifts are synchronized. Power shuttle shifting between forward and reverse. Only available on open-station (ROPS) equipped tractors. |
SPEEDS 2
| Description | With 18.4x30 R1 rear tires./ |
TRANSMISSION 3
The John Deere 6120 features a PowrQuad partial power shift transmission with 16 forward and reverse speeds, enabling efficient adaptability to various field conditions. The wet disc clutch provides smooth engagement during power shifts, reducing operator fatigue and enhancing productivity, especially in demanding agricultural tasks. An optional creeper gear can extend operational versatility, allowing for a total of 28 speeds, which is advantageous for tasks requiring precise speed control, such as planting or tillage in tight spaces.
| Transmission | John Deere PowrQuad |
| Type | partial power shift |
| Gears | 16 forward and reverse |
| Clutch | wet disc |
| Oil capacity | 51.8 qts/49.0 L/JD HyGard |
| Description | Four gears (1-4) in four ranges (A-D) with reverser lever. Clutchless power shift between gears (1-4) and direction changes (power shuttle). Range shifts (A-D) are synchronized, and may be shifted while the tractor is moving by using the clutch. Optional creeper adds an additional twelve speeds for 28 forward and reverse. The PowrQuad uses a gear-shift lever while the PowrQuad Plus (cab tractors only) offers push-button gear shifting. |
SPEEDS 3
| Description | With 18.4x30 R1 rear tires./ |
TRANSMISSION 4
The John Deere 6120 features the PowrQuad Plus partial power shift transmission, providing 24 forward and reverse gears, which enhances versatility in various field operations. The wet disc clutch allows for smooth shifting and engagement, while the ability to shift ranges A-F on the move with the clutch facilitates uninterrupted workflow. However, operators should be mindful of the oil capacity of 52.8 quarts, as maintaining appropriate fluid levels is essential for transmission performance and longevity.
| Transmission | John Deere PowrQuad Plus |
| Type | partial power shift |
| Gears | 24 forward and reverse |
| Clutch | wet disc |
| Oil capacity | 52.8 qts/50.0 L/JD HyGard |
| Description | Four gears (1-4) in six ranges (A-F) with reverser lever. Push-button power shifting between gears (1-4) and power shuttle directional shifting using the reverser lever. Ranges (A-F) may be shifted on the move by using the clutch. |
SPEEDS 4
| Description | With 18.4x30 R1 rear tires./ |
MECHANICAL
The John Deere 6120 offers versatile drivetrain options with 2WD or 4WD configurations, making it suitable for diverse agricultural tasks. The choice of 12 to 24-speed transmission systems enhances operational efficiency, allowing for optimal power and speed adjustments across various terrains. However, the optional ConfortGard Cab, while improving operator comfort, adds to the cost; thus, budget considerations should be evaluated against productivity gains in extended fieldwork scenarios.
| Chassis | 4x2 2WD/4x4 MFWD 4WD (optional) |
| Steering | hydrostatic power |
| Brakes | hydraulic wet disc |
| Cab | Two-post ROPS. ConfortGard Cab optional. |
| Transmissions | 12-speed fully synchronized/16-speed power shuttle/16-speed partial power shift/24-speed partial power shift |
HYDRAULICS
| Type | pressue flow compensated |
| Valves | 4 |
| Pump flow | 25 gpm/94.6 lpm |
TRACTOR HITCH
| Rear Type | II |
| Rear lift | 4745 lbs/2152 kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540/540/1000 |
| Engine RPM | 1000@2185 |
| Front PTO | optional |
| Front RPM | 1000 |
JOHN DEERE 6120 TIRES
The John Deere 6120 offers versatile tire options, with standard agricultural tires designed to enhance traction and stability during field operations. The 2WD configuration with 10.00-16 front and 16.9-30 rear tires is advantageous for flat terrains, while the 4WD option provides better performance in uneven or wetter conditions due to the enhanced grip from 12.4-24 front tires. However, the choice of tires can influence fuel efficiency and compaction; 4WD may lead to increased fuel consumption compared to 2WD in less demanding conditions.
| Standard tires (ag) | Front: 10.00-16. Rear: 16.9-30 (2WD)/Front: 12.4-24. Rear: 16.9-30 (4WD) |
DIMENSIONS
| Wheelbase | 94.5 inches/240 cm |
| Length | 162.7 inches/413 cm |
| Min Width | 61.8 inches/156 cm |
| Height | 98.3 inches/249 cm |
| Operating weight | 9,350 lbs/4241 kg (4WD cab) |
| Clearance (front axle) | 23.1 inches/58 cm (2WD)/19.3 inches/49 cm (4WD) |
| Front tread | 59.7 to 79.4 inches/151 to 201 cm (4WD) |
| Rear tread | 63.1 to 95.1 inches/160 to 241 cm |
DIMENSIONS & TIRES
The John Deere 6120 features a wheelbase of 94.5 inches (240 cm), providing stability for field operations, particularly in row crop applications. Weighing 9,350 lbs (4,241 kg) enhances traction but may present challenges in soft ground conditions. Its 2WD configuration with front and rear tire sizes of 10.00-16 and 16.9-30, respectively, offers good power for moderate farm tasks, though it may limit maneuverability and performance in adverse terrain compared to 4WD counterparts.
| Wheelbase | 94.5 inches/240 cm |
| Weight | 9,350 lbs/4241 kg |
| Front tire | 10.00-16 |
| Rear tire | 16.9-30 (2WD) |
6120 SERIAL NUMBERS
| Location | Serial number plate on the right side of the tractor's main frame. |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging volts | 14 |
| Battery volts | 12 |