John Deere

John Deere 6603

The John Deere 6603 is a utility tractor from the 6003 Series produced from 2002 to 2008. It was built in Saltillo, Mexico and originally priced at $34,870 in 2004 for the 2WD model. It features a 6.8L 6-cylinder turbocharged diesel engine producing 112 hp, with a 9-speed partially synchronized transmission. The tractor offers two- or four-wheel drive options, mechanical wet disc brakes, and a two-post folding ROPS with an optional ComfortVantage Cab. Hydraulics are open center type with 2750 psi pressure and 15 gpm pump flow. The rear hitch is category II with mechanical lower-link draft sensing and a rear lift capacity of up to 5292 lbs. The PTO is independent with 540/1000 rpm options. Dimensions vary slightly between 2WD and 4WD models, with weights ranging from 8776 to 10252 lbs depending on configuration. Electrical system features a 12-volt battery with 65 amp alternator charging.

Power112 hp

Founded2002 - 2008

Model6603

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Technical Specifications

Detailed specifications and technical data for John Deere 6603

Power

Engine power	112 hp (83.5 kW)
PTO (claimed)	95 hp (70.8 kW)

Engine

Type	turbocharged diesel
Model	John Deere 6068T
Power	112 hp (83.5 kW)
Cooling	liquid-cooled
Cylinders	6-cylinder
Fuel tank	41.7 gal (157.8 L)
Rated RPM	2100
Bore/Stroke	4.19x5.00 inches (106 x 127 mm)
Compression	17:1
Displacement	414 ci (6.8 L)
Firing order	1-5-3-6-2-4
Oil capacity	20 qts (18.9 L)
Starter power	4.2 hp (3.1 kW)
Starter volts	12
Coolant capacity	19.5 qts (18.5 L)
Intake valve clearance	0.013 inches (0.330 mm)
Exhaust valve clearance	0.017 inches (0.432 mm)

Height

Cab	78 inches (198 cm)
Hood	70 inches (177 cm)
ROPS	110.7 inches (281 cm)
Exhaust	118 inches (299 cm)
Steering wheel	82.3 inches (209 cm)
Height (Folded ROPS)	83.4 inches (211 cm)

Weight

2WD Cab Shipping	9658 lbs (4380 kg)
4WD Cab Shipping	10252 lbs (4650 kg)
2WD ROPS Shipping	8776 lbs (3980 kg)
4WD ROPS Shipping	9361 lbs (4246 kg)

Electrical

Ground	negative
Battery CCA	925
Battery volts	12
Charging amps	65
Charging system	alternator

Hydraulics

Type	open center
Pressure	2750 psi (189.6 bar)
Pump flow	15 gpm (56.8 lpm)
Total flow	15 gpm (56.8 lpm)
Rear valves	2 or 3

Mechanical

ROPS	Two-post folding ROPS. ComfortVantage Cab optional.
Drive	Two- or four-wheel drive
Brakes	Mechanical wet disc brakes
Final drives	inboard planetary
Power steering	Yes
Differential lock	mechanical rear

Production

Series	6003 Series
Built in	Saltillo, Mexico
Category	Utility tractor
Original price	$34,870 in 2004 with 2WD
Years produced	2002 - 2008

Transmission

Type	Top Shaft Synchronized (TSS), partially synchronized
Gears	9 forward and 3 reverse
Notes	Three gears (1-3), plus reverse, (R) in three ranges (A-C). Gear shifts are synchronized. Tractor must be stopped to shift range.
Clutch	305mm cerametalic dry disc
Oil capacity	61.2 qts (57.9 L)

Tractor hitch

Control	mechanical lower-link draft sensing
Rear Type	II
Rear lift (at ends)	5,292 lbs (2400 kg)
Rear lift (at 24"/610mm)	4828 lbs (2189 kg)

Dimensions & Tires

Width	73 inches (rear fenders) (185 cm)
2WD Length	175 inches (444 cm)
4WD Length	171.6 inches (435 cm)
Rear tread	59.5 to 79.4 inches (151 to 201 cm)
2WD Wheelbase	104.1 inches (264 cm)
4WD Wheelbase	103.8 inches (263 cm)
2WD Front tread	58.7 to 80.4 inches (149 to 204 cm)
4WD Front tread	63.6 to 79.4 inches (161 to 201 cm)
Alternate tires	Front: 14.9-24. Rear: 18.4-38
Ground clearance	18 inches (45 cm)
Flanged rear axle	65.8 inch length (1671 mm)
Standard tires (ag)	Front: 10.00-16. Rear: 18.4-38