John Deere 6403

John Deere 6403The John Deere 6403 is a 2WD/4WD utility tractor from the 6003 series. This tractor was manufactured by John Deere in Saltillo, Mexico from 2002 to 2008. The John Deere 6403 is equipped with a 4.5 L (276.0 cu·in) four-cylinder diesel engine and a partially synchronized transmission with 9 forward and 3 reverse gears.

The JD 6403 utility tractor used the John Deere engine. It is a 4.5 L, 4,523 cm2, (276.0 cu·in) four-cylinder turbocharged diesel engine with 106.0 mm (4.17 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. The compression ratio rating is 17.0:1. This engine produced 103.5 PS (76.1 kW; 102.1 HP) at 2,100 rpm of output power.

The John Deere 6403 is equipped with power steering, mechanical wet disc brakes, Two-post folding ROPS or ComfortVantage Cab (optional) and 157.8 liters (41.7 US gal.; 34.7 Imp. gal) fuel tank.

John Deere 6403 Specifications

General Specifications
ModelJohn Deere 6403
Length 2WD: 4,120 mm (162.2 in)
4WD: 4,140 mm (163 in)
Width1,850 mm (72.8 in)
Height (ROPS)2,760 mm (108.7 in)
Wheel base 2WD: 2,310 mm (90.9 in)
4WD: 2,300 mm (90.6 in)
Weight (shipping) 2WD ROPS: 3,490 kg (7,695 lbs)
4WD ROPS: 3,690 kg (8,130 lbs)
2WD Cab: 3,890 kg (8,580 lbs)
4WD Cab: 4,080 kg (8,990 lbs)
Fuel tank capacity157.8 liters (41.7 US gal.; 34.7 Imp. gal)
Battery12V, CCA 925A
Cabin typeTwo-post folding ROPS or ComfortVantage Cab (optional)
Engine modelJohn Deere
Engine typeFour-stroke, liquid-cooled, inline
Fuel typeDiesel
Displacement4.5 L, 4,523 cm2, (276.0 cu·in)
Bore and stroke106.0 mm X 127.0 mm (4.17 in X 5 in)
Compression ratio17.0:1
Horsepower103.5 PS (76.1 kW; 102.1 HP) at 2,100 rpm
Oil capacity:12.3 L (13 US. qt, 10.8 Imp. qt.)
Coolant capacity:13.5 L (14.3 US. qt, 11.9 Imp. qt.)
Transmission and chassis
Chassis4×2 2WD or 4×4 MFWD 4WD
Steering typePower
BrakesMechanical wet disc
Final driveInboard planetary
Differential lockMechanical rear
Transmission modelTop Shaft Synchronized (TSS)
Transmission typePartially synchronized with cerametalic dry disc clutch
Gears9 forward and 3 reverse
Speed Forward: 29.4 kmh (18.3 mph) Reverse: 27.8 kmh (17.3 mph)
Front tires Ag: 10.00-16, 13.6-24
Rear tires Ag: 18.4-34
Three-Point Hitch
Control typeMechanical lower-link draft sensing
Lift capacity (at 610 mm/24 in)2,190 kg (4,830 lbs)
PTO (Power take-off shaft)
Rear PTO typeIndependent with dry disc clutch
Rear PTO speed540/1000 rpm
Hydraulic system
Hydraulic typeOpen center
Pressure2750 psi (189.6 bar)
Valves2 or 3
Pump flow12.1 gpm (45.8 lpm)
Total flow15.0 gpm (56.8 lpm)
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