| Manufacturer | John Deere |
| Price | - |
| Model | 7930 |
| Equipment Type | Row-Crop Tractors |
| Factory | Waterloo, Iowa, USA |
OCED TRACTOR TEST 563 2
| Description | Diesel AutoQuad-Plus 4WD March 28 - April 9, 2007 Link: OCED Tractor Test 563 file PTO performance Drawbar performance |
| Max power | 165.51hp / 123.4kW |
| Fuel use | 10.5gal/hour / 39.7l/hour |
| Power at rated engine speed | 183.10hp / 136.5kW |
| Power at rated PTO speed | 200.73hp / 149.7kW |
OCED TRACTOR TEST 564 2
| Description | Diesel IVT 4WD March 29 - April 17, 2007 Link: OCED Tractor Test 564 file PTO performance Drawbar performance |
| Max power | 159.10hp / 118.6kW |
| Fuel use | 10.5gal/hour / 39.7l/hour |
| Power at rated engine speed | 182.94hp / 136.4kW |
| Power at rated PTO speed | 198.72hp / 148.2kW |
JOHN DEERE 7930 POWER
| Engine | 220hp / 164.1kW |
| PTO (claimed) | 180hp / 134.2kW |
| Drawbar (tested) | 165.51hp / 123.4kW |
| PTO (tested) | 203.38hp / 151.7kW |
ENGINE DETAIL
The John Deere 7930 features a robust intercooled turbocharged diesel engine with significant torque delivery (645 lb-ft at 1602 RPM), making it ideal for high-load applications such as plowing or heavy towing. Its high-pressure common rail fuel system enhances fuel efficiency and power delivery, though users should be aware that servicing the dual paper air cleaner is crucial for maintaining optimal engine performance. With a compression ratio of 17:1, this tractor is well-suited for demanding farming tasks but may require careful monitoring of cooling systems, especially in prolonged operations.
| Description | John Deere intercooled turbocharged diesel 6-cylinder liquid-cooled |
| Displacement | 414ci / 6.8L |
| Bore/Stroke | 4.19x5.00inches / 106x 127mm |
| Power | 220hp / 164.1kW |
| Fuel system | high-pressure common rail |
| Cooling system | viscous fan |
| Air cleaner | dual paper elements |
| Compression | 17:1 |
| Rated RPM | 2100 |
| Torque | 645lb-ft / 874.6Nm |
| Torque RPM | 1602 |
| Firing order | 1-5-3-6-2-4 |
| Starter volts | 12 |
| Oil capacity | 27.5qts / 26.0L |
JOHN DEERE 7930 ENGINE
The John Deere 7930 is equipped with a powerful 6.8L 6-cylinder diesel engine, providing robust torque for demanding agricultural tasks. Its strong hydraulic system facilitates efficient operation of implements, while the CommandView cab enhances operator comfort and visibility. However, potential buyers should consider the tractor's fuel efficiency and maintenance requirements in relation to their workload demands.
| Description | John Deere 6.8L 6-cyl diesel |
TRANSMISSIONS OVERVIEW
The John Deere 7930 features an advanced powertrain with options for 16-speed or 20-speed transmission systems, providing enhanced efficiency and torque management for various agricultural applications. The 20-speed variant allows for finer speed control, beneficial during tasks requiring precision, such as plowing or planting. However, the complexity of a 20-speed system may lead to increased maintenance requirements and operator training needs.
| Description | 16-speed 20-speed |
TRANSMISSION 1
The John Deere 7930 features a PowrQuad PLUS transmission, providing 16 forward and reverse gears that enhance operational versatility and efficiency during varied tasks. The four push-button power shift gears in synchronized ranges (A-D) allow for seamless gear transitions, reducing operator fatigue and maintaining consistent power delivery. However, mastering the left-hand power shuttle may require training for optimal use, particularly in tight maneuvering scenarios.
| Transmission | PowrQuad PLUS |
| Gears | 16 forward and reverse |
| Description | Four push-button power shift gears (1-4) in four synchronized ranges (A-D) with left-hand power shuttle |
SPEEDS 1
| Description | With group 47 rear tires. Reverse speeds are 4% faster than forward |
TRANSMISSION 2
The John Deere 7930 features the AutoQuad PLUS transmission, which offers 20 forward and reverse gears, enhancing operational efficiency and versatility. Its four push-button power shift gears across five synchronized ranges ensure smooth transitions and optimal power management, making it suitable for various farming applications. The availability of 40 kph and 50 kph versions allows for tailored speed options, although higher speeds may sacrifice torque performance in demanding field conditions.
| Transmission | AutoQuad PLUS |
| Gears | 20 forward and reverse |
| Description | Four push-button power shift gears (1-4) in five synchronized ranges (A-D) with left-hand power shuttle. Available in 40 kph and 50 kph versions |
SPEEDS 2
| Description | With group 47 rear tires. Reverse speeds are 4% faster than forward |
TRANSMISSION 3
The John Deere 7930 features an Infinitely Variable Transmission (IVT), providing seamless gear shifting without predefined steps, thus enhancing operator comfort and driving efficiency. This design allows for infinite forward and reverse speeds, making it suitable for varied applications like tilling, plowing, or transport, enabling precise control over power and speed. However, the complexity of IVT systems can lead to higher maintenance costs compared to traditional gear transmissions.
| Transmission | Infinitely Variable Transmission (IVT) |
| Gears | infinite forward and reverse |
MECHANICAL
The John Deere 7930 features a 4x4 MFWD (Motor Front Wheel Drive) chassis, enhancing traction and stability on varying terrains, making it particularly advantageous for heavy tillage and row crop operations. Its hydraulic wet disc braking system provides superior stopping power and minimizes wear, which is beneficial for prolonged operational tasks. With options for 16-speed or 20-speed transmissions, operators can benefit from improved control over power delivery and efficiency during different field activities.
| Chassis | 4x4 MFWD 4WD |
| Steering | power |
| Brakes | hydraulic wet disc |
| Cab | Cab standard with air-conditioning |
| Transmissions | 16-speed 20-speed |
CAPACITY
| Fuel | 103gal / 389.9L 94gal / 355.8L *Capacity with right-hand steps |
| Hydraulic system | 28.5gal / 107.9L |
HYDRAULICS
| Type | closed center load-sensing |
| Capacity | 28.5gal / 107.9L |
| Pressure | 2900psi / 200.0bar |
| Valves | 2 to 7 |
| SCV flow | 30gpm / 113.6lpm |
| Total flow | 32gpm / 121.1lpm 45gpm / 170.3lpm |
TRACTOR HITCH
| Rear Type | III |
| Rear lift | 10,050lbs / 4558kg 14,000lbs / 6350kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | hydraulic wet disc |
| Rear RPM | 1000 (1.75)/540/1000 (1.375) |
| Engine RPM | 540@1950 / 1000@1950 |
JOHN DEERE 7930 TIRES
The John Deere 7930, equipped with standard agricultural tires (Front: 420/90R30, Rear: 480/80R46), offers a robust footprint for enhanced traction and stability across various terrains. The larger rear tire helps distribute weight effectively, reducing soil compaction, while the front tire's narrower profile aids in steering and maneuverability. However, these tire sizes may limit performance on extremely soft ground, necessitating careful consideration of soil conditions when operating.
| Standard tires (ag) | Front: 420/90R30. Rear: 480/80R46 |
DIMENSIONS
| Wheelbase | 112.6inches / 286cm |
| Length | 225inches / 571cm |
| Width | 96inches / 243cm |
| Height (cab) | 122.4inches / 310cm |
| Shipping weight | 17731lbs / 8042kg |
| Clearance (front axle) | 27.4inches / 69cm |
| Clearance (rear axle) | 32.5inches / 82cm |
| Clearance (drawbar) | 18.25inches / 46cm |
| Rear axle | Bar: 3.94 by 118.5inches / 100by 3009mm |
DIMENSIONS & TIRES
The John Deere 7930 has a substantial wheelbase of 112.6 inches, providing excellent stability for heavy-duty tasks. With a weight of 17,731 lbs and robust tire sizes (front: 420/90R30; rear: 480/80R46), it excels in traction and maneuverability, making it ideal for fieldwork like plowing and tillage. However, the tractor’s size may limit its agility in tighter spaces, necessitating consideration for operations in confined areas.
| Wheelbase | 112.6inches / 286cm |
| Weight | 17731lbs / 8042kg |
| Front tire | 420/90R30 |
| Rear tire | 480/80R46 |
7930 SERIAL NUMBERS
| Location | Serial number plate on the right side of the tractor frame, above the front axle |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 200 |
| Batteries | 2 |
| Battery CCA | 925 |
| Battery volts | 12 |