Specifications, Service, and Repair of Farm and Lawn Tractors

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John Deere 6403 Technical Data

John Deere 6403 Engine Specifications

Engine Model ................ John Deere 4045T PowerTech
Engine Type ................ 4-Stroke, 4-cylinder turbocharged diesel
Number of Cylinders ................ 4, in-line
Displacement, cu in (L) ................ 275.0 (4.50)
Engine Bore, in (mm) ................ 4.15 (105.0)
Engine Stroke, in (mm) ................ 5.00 (127.0)
Aspiration ................ Turbocharged
Rated Engine Power, hp (kW) ................ 98.0 (73.1)
Rated Engine Speed, rpm ................ 2100
Operating Speed Range, rpm ................ 850-2275
Maximum Torque, Nm (lb-ft) ................ 331 (244)
Torque Speed, rpm ................ 1500
Compression ................ 17.0:1
Firing Order ................ 1-3-4-2
Fuel System ................ Injection pump
Valve Clearance (Intake), in (mm) ................ 0.012-0.015 (0.31-0.38)
Valve Clearance (Exhaust), in (mm) ................ 0.016-0.019 (0.41-0.48)
Fuel Tank Capacity, gal (L) ................ 40.0 (152.0)
Oil Capacity, qts (L) ................ 13.0 (12.0)
Coolant Capacity, qts (L) ................ 14.3 (13.5)
Electrical System Rating, Volts ................ 12
Charging System ................ Alternator
Alternator Rating, Amps ................ 65

JD 6403 Power Take-Off

PTO Operational Type ................ Independent
PTO Horsepower, hp (kW) ................ 85.0 (63.0)
PTO Shaft Size, in (mm) ................ 1.4 (35.0)
PTO Speed, rpm ................ 540/1000
PTO / Engine Speed, rpm ................ 540/2100
PTO / Engine Speed, rpm ................ 1000/2100

Transmission Configuration

Transmission Type ................ Top Shaft Synchronizer
Gearbox Type ................ 9F/3R
Number of Forward Gears ................ 9
Number of Reverse Gears ................ 3
Oil Capacity, qts (L) ................ 63.6 (60.0)
Maximum Forward Speed, mph (kph) ................ 18.3 (29.5)
Maximum Reverse Speed, mph (kph) ................ 17.3 (27.8)

John Deere 6403 Wheels and Tires

Drive Wheels ................ 2WD/4WD
Steering Configuration ................ Front Steer
Steering System ................ Hydrostatic power
Brakes Type ................ Differential wet disc
Front Tire Size (2WD) ................ 10.0-16
Rear Tire Size (2WD) ................ 16.9-34
Front Tire Size (4WD) ................ 12.4-24
Rear Tire Size (4WD) ................ 18.4-34
Front Tread, in (mm) ................ 58.7-80.6 (1490-2040)
RearTread, in (mm) ................ 60.1-79.8 (1520-2020)

JD 6403 Hydraulics and Hitch

Hydraulic System Type ................ Open Center
Implement Pump Type ................ Dual Gear
Implement Pump Flow, gpm (Lpm) ................ 12.0 (45.4)
Hydraulic Pressure, bar (psi) ................ 190 (2755)
Hydraulic Capacity, qts (L) ................ 15.8 (60.0)
Number of Standard Remote Valves ................ 2/3
3-Point Hitch Category ................ 2
Fixed Draft Links ................ Standard
Standard Lift Capacity at lift pin, lb (kg) ................ 4830 (2190)
Standard Lift Capacity 24" (0.6m) behind pin, lb (kg) ................ 3150 (6945)

John Deere 6403 Dimensions and Weight

Wheelbase (2WD), in (mm) ................ 91.3 (2120)
Wheelbase (4WD), in (mm) ................ 91 (2310)
Length (2WD), in (mm) ................ 149.2 (3860)
Length (4WD), in (mm) ................ 157.9 (4010)
Overall Width, in (mm) ................ 65 (1650)
Height, in (mm) ................ 113 (2880)
Ground Clearance (2WD), in (mm) ................ 23.5 (600)
Ground Clearance (4WD), in (mm) ................ 17 (430)
Weight (ROPS, 2WD), lb (kg) ................ 7915 (3590)
Weight (Cab, 2WD), lb (kg) ................ 8220 (3730)
Weight (ROPS, 4WD), lb (kg) ................ 8540 (3875)
Weight (Cab, 4WD), lb (kg) ................ 8850 (4015)

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JOHN DEERE TRACTORS SPECIFICATIONS

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JOHN DEERE TRACTORS ATTACHMENTS
1023E 2025R 2210 2520 3032E
3046R 3520 4066R 4105 4200
4320 4400 4520 4600 4720
430 420 455 X300 X350
X485 X500 X590 X700 X738

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JOHN DEERE FRONT END LOADERS

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JOHN DEERE TRACTORS MAINTENANCE

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JOHN DEERE TRACTORS TROUBLESHOOTING
2640 3040 3310 3650 4100
5050D 5090R 5410 6105R 7200R
E130 L111 LA110 LT155 X300R

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