John Deere 6403
Power
102 hp
Production
2002-2008
Engine
Turbocharged diesel, 4-cylinder
Transmission
Top Shaft Synchronized (TSS)
Drive
2WD/4WD
From the same series:
Introduction
John Deere 6403 Utility Tractor
The John Deere 6403 is a utility tractor produced between 2002 and 2008 in Saltillo, Mexico. Designed for versatile agricultural operations, this model was offered in both two-wheel drive and four-wheel drive configurations.
Engine and Performance
The tractor is powered by a 4.5-liter, 4-cylinder turbocharged diesel engine. It generates 102 horsepower (76.1 kW) at a rated speed of 2100 RPM. The engine cooling system has a capacity of 13.5 liters, and the unit features a dry-type cylinder liner construction with a compression ratio of 17:1.
Transmission and Drivetrain
The 6403 utilizes a Top Shaft Synchronized (TSS) partially synchronized transmission, providing 9 forward and 3 reverse gears. This system requires the tractor to be stationary to change ranges. It is equipped with a 305mm cerametallic dry disc clutch to manage power delivery to the drivetrain.
Hydraulics and PTO
The hydraulic system is an open-center design with a total flow capacity of 15 gpm (56.8 lpm) and a system pressure of 2750 psi. It supports 2 or 3 rear valves. The independent rear PTO offers dual speeds of 540 and 1000 RPM, both achieved at an engine speed of 2100 RPM.
Dimensions and Hitch
The tractor features a Category II rear hitch with mechanical lower-link draft sensing, capable of lifting 4828 lbs (2189 kg) at 24 inches behind the lift point. The wheelbase measures 91.3 inches for the 2WD model and 90.9 inches for the 4WD version, providing a stable footprint for various field implements.
Conclusion
The John Deere 6403 serves as a reliable utility platform suited for general farm work, combining a robust mechanical drivetrain with standard hydraulic features necessary for a wide range of mounted and trailed implements.
Production Information of John Deere, 6403
- Original price was $30,942 in 2004 with 2WD
- Utility tractor
- Built in Saltillo, Mexico
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 6403
| 2WD Front tread | 58.7 to 80.4 inches [149 to 204 cm] |
|---|---|
| 2WD Wheelbase | 91.3 inches [231 cm] |
| Width | 73 inches (rear fenders) [185 cm] |
| 4WD Length | 163.1 inches [414 cm] |
| 4WD Wheelbase | 90.9 inches [230 cm] |
| 4WD Front tread | 59.7 to 79.4 inches [151 to 201 cm] |
| Flanged rear axle | 65.8 inch length [1671 mm] |
| 2WD Length | 162.4 inches [412 cm] |
| Rear tread | 59.5 to 79.4 inches [151 to 201 cm] |
| Standard tires (ag) | Front: 10.00-16. Rear: 18.4-34 |
|---|---|
| Standard tires (ag)(optional) | Front: 13.6-24. Rear: 18.4-34 |
Engine Specifications of John Deere, 6403
- John Deere
- Liquid-cooled
- Turbocharged diesel
- 4-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 276 ci [4.5 L] |
| Compression | 17:1 |
| Bore/Stroke | 4.19x5.00 inches [106 x 127 mm] |
| Coolant capacity | 14.3 qts [13.5 L] |
| Oil capacity | 13 qts [12.3 L] |
| Firing order | 1-3-4-2 |
| Rated RPM | 2100 |
| Power | 102 hp [76.1 kW] |
Transmission Information of John Deere, 6403
Transmission variants 1
- Three gears (1-3), plus reverse, (R) in three ranges (A-C). Gear shifts are synchronized. Tractor must be stopped to shift range.
| Transmission | Top Shaft Synchronized (TSS) |
|---|---|
| Clutch | 305mm cerametalic dry disc |
| Type | Partially synchronized |
| Gears | 9 forward and 3 reverse |
Mechanical Specs of John Deere, 6403
- Two- or four-wheel drive
- Mechanical wet disc brakes
- Power steering
- Two-post folding ROPS. ComfortVantage Cab optional.
| Final drives | Inboard planetary |
|---|---|
| Differential lock | Mechanical rear |
Power Information of John Deere, 6403
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1000@2100 |
| Engine RPM | 540@2100 |
| Clutch | Dry disc |
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of John Deere, 6403
| Type | Open center |
|---|---|
| Total flow | 15 gpm [56.8 lpm] |
| Pump flow | 12.1 gpm [45.8 lpm] |
| Pressure | 2750 psi [189.6 bar] |
| Rear valves | 2 or 3 |
Three-Point Hitch of John Deere, 6403
| Rear Type | II |
|---|---|
| Control | Mechanical lower-link draft sensing |
| Rear lift (at 24"/610mm) | 4828 lbs [2189 kg] |
Electrical System of John Deere, 6403
| Ground | Negatve |
|---|---|
| Battery volts | 12 |
| Battery CCA | 925 |
| Charging system | Alternator |
| Charging amps | 65 |
Where it sits
With 102 HP, the John Deere 6403 sits between 6100D (98 HP) and 6603 (112 HP) in John Deere's range. Its power puts it in the 66th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the John Deere 6403 have?
The John Deere 6403 delivers 102 HP.
What years was the John Deere 6403 produced?
The John Deere 6403 was produced in 2002-2008.
What engine does the John Deere 6403 have?
The John Deere 6403 is powered by a Turbocharged diesel, 4-cylinder engine.
What transmission does the John Deere 6403 use?
The John Deere 6403 uses a Top Shaft Synchronized (TSS) transmission.
Is the John Deere 6403 4WD?
The John Deere 6403 is available in 2WD/4WD.