John Deere 9420
Power
425 hp
Production
2002-2007
Engine
6-cylinder
Transmission
John Deere PowerSync
Drive
4WD
From the same series:
Introduction
John Deere 9420 Four-Wheel Drive Tractor
The John Deere 9420 is a high-horsepower four-wheel drive tractor produced between 2002 and 2007 in Waterloo, Iowa, USA. Designed for large-scale agricultural operations, this machine focuses on heavy-duty traction and high-capacity implement management.
Engine and Performance
The tractor is powered by a 12.5-liter, 6-cylinder liquid-cooled engine delivering 425 horsepower. It operates at a rated speed of 2100 RPM. The engine features a 17:1 compression ratio and utilizes a dry-type air cleaner. With an oil capacity of 41.6 liters and a cooling system capacity of 60.6 liters, the powertrain is engineered for sustained heavy-duty performance.
Transmission and Drive
The 9420 offers two transmission options: a 24-speed partial power shift or an 18-speed full power shift. The partial power shift system features four ranges and three gears with high-low power shift, including synchronized shifting between specific ranges and gears. The tractor is equipped with a four-wheel drive system, hydrostatic articulated steering, and hydraulic wet disc brakes to manage its significant mass and power.
Hydraulics and PTO
The hydraulic system is a closed-center, pressure and flow-compensated design. It provides a total flow capacity of 166.5 lpm, with high-flow options reaching up to 295.2 lpm. The system supports four or five valves and operates at a pressure of 200 bar. The independent rear PTO operates at a standard 1000 RPM, providing consistent power for heavy implements.
Hitch and Dimensions
The tractor is equipped with a Category III rear hitch, with Category IV/IVN options available. The rear lift capacity is rated at 6,291 kg, with optional lift capabilities up to 6,552 kg. The machine sits on a 350 cm wheelbase and has a total length of 695 cm, providing the stability required for its size class.
Conclusion
The John Deere 9420 serves as a reliable workhorse for large farming operations requiring high drawbar pull and significant hydraulic capacity. Its combination of robust engine output, articulated steering, and flexible transmission options makes it well-suited for heavy tillage and large-scale implement operation.
Production Information of John Deere, 9420
- Four-wheel Drive (4WD) tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 9420
| Wheelbase | 137.8 inches [350 cm] |
|---|---|
| Clearance (front axle) | 28.8 inches [73 cm] |
| Width | 115.5 inches [293 cm] |
| Length | 274 inches [695 cm] |
| Clearance (drawbar) | 17 inches [43 cm] |
| Clearance (drawbar)(optional) | 289 inches (with hitch) [734 cm] |
| Ag front | 710/70R42 |
|---|---|
| Ag rear | 710/70R42 |
Engine Specifications of John Deere, 9420
- Liquid-cooled
- 6-cylinder
| Operating RPM | 1500-2100 |
|---|---|
| Displacement | 765 ci [12.5 L] |
| Oil capacity | 44 qts [41.6 L] |
| Air cleaner | Dry |
| Bore/Stroke | 5.00x6.50 inches [127 x 165 mm] |
| Coolant capacity | 64 qts [60.6 L] |
| Starter volts | 12 |
| Rated RPM | 2100 |
| Compression | 17:1 |
| Power | 425 hp [316.9 kW] |
Transmission Information of John Deere, 9420
Transmission variants 1
- Four ranges (A-D) and three gears (1-3) with high-low power shift. Synchronized shifting between ranges A-B, B-C, and C-D. Gear shifts are synchronized between 1-R, 1-2, and 2-3. Reverse gear does not operate in D range.
| Transmission | John Deere PowerSync |
|---|---|
| Transmission(optional) | 140 qts (with PTO) [132.5 L] |
| Oil capacity | 136 qts [128.7 L] |
| Type | Partial power shift |
| Gears | 24 forward and 6 reverse |
Transmission variants 2
| Transmission | John Deere Powershift |
|---|---|
| Transmission(optional) | 145.6 qts (with PTO) [137.8 L] |
| Oil capacity | 141.6 qts [134.0 L] |
| Type | Full power shift |
| Gears | 18 forward and 6 reverse |
- 24-speed partial power shift
- 18-speed full power shift
Mechanical Specs of John Deere, 9420
- Four-wheel drive
- CommandView cab standard with air-conditioning.
- Hydraulic wet disc brakes
| Steering | Hydrostatic articulated |
|---|
Power Information of John Deere, 9420
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 |
Hydraulics Specifications of John Deere, 9420
| Type | Closed center pressure/flow compensated |
|---|---|
| Type(optional) | 31 gal (hi-flow/3pt) [117.3 L] |
| Type(optional) | 30 gal (hi-flow) [113.6 L] |
| Capacity | 27 gal [102.2 L] |
| Pump flow | 30 gpm [113.6 lpm] |
| Pressure | 2900 psi [200.0 bar] |
| Pressure(optional) | 28 gal (with 3pt) [106.0 L] |
| Pressure(optional) | 48 gpm (Powershift) [181.7 lpm] |
| Total flow | 44 gpm [166.5 lpm] |
| Valves | 4 or 5 |
Three-Point Hitch of John Deere, 9420
| Rear Type | III |
|---|---|
| Rear Type(optional) | 14,445 lbs (optional) [6552 kg] |
| Rear Type(optional) | IV/IVN |
| Rear lift | 13,871 lbs [6291 kg] |
Electrical System of John Deere, 9420
| Ground | Negative |
|---|---|
| Battery CCA | 925 |
| Batteries | 3 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 140 |
Where it sits
With 425 HP, the John Deere 9420 sits between 9320 (375 HP) and 9520 (450 HP) in John Deere's range. Its power puts it in the 98th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the John Deere 9420 have?
The John Deere 9420 delivers 425 HP.
What years was the John Deere 9420 produced?
The John Deere 9420 was produced in 2002-2007.
What engine does the John Deere 9420 have?
The John Deere 9420 is powered by a 6-cylinder engine.
What transmission does the John Deere 9420 use?
The John Deere 9420 uses a John Deere PowerSync transmission.
Is the John Deere 9420 4WD?
The John Deere 9420 is available in 4WD.