Case IH STX425QT Quadtrac

Production: 2002 - 2006  

Production
Manufacturer:	Case IH
Type:	Articulated Crawler tractor
Factory:	Fargo, North Dakota, USA

Variants

wheeled tractor

crawler tractor

Case IH STX425QT Power
Engine:	425 hp 316.9 kW
PTO (claimed):	370 hp 275.9 kW

Mechanical
Chassis:	articulated crawler
Final drives:	inboard planetary
Steering:	hydrostatic power
Brakes:	integrated hydraulic wet disc
Cab:	Surveyor Cab standard.
Transmission:	16-speed full power shift

Hydraulics
Type:	pressure flow compensated (PFC)
Rear valves:	4 to 7
Pump flow:	40 gpm 151.4 lpm
55 gpm 208.2 lpm *Optional

Tractor hitch
Rear Type:	IVN/III
Rear lift (at 24"/610mm):	19500 lbs 8845 kg

Power Take-off (PTO)
Rear PTO:	independent*Optional
Rear RPM:	1000 (1.75)

Electrical
Ground:	negative
Charging system:	alternator
Battery volts:	12

Engine Detail
Cummins QSX15
turbocharged aftercooled diesel
6-cylinder
liquid-cooled
Displacement:	915 ci 15.0 L
Bore/Stroke:	5.39x6.65 inches 137 x 169 mm
Power:	425 hp 316.9 kW
Air cleaner:	dual paper elements
Rated RPM:	2000
Torque:	1594 lb-ft 2161.5 Nm
Torque RPM:	1400
Starter volts:	12

Transmission
Type:	full power shift
Gears:	16 forward and 2 reverse
Clutch:	electro-hydraulic wet disc

Dimensions
Wheelbase:	154 inches 391 cm
Width:	44 inches 111 cm (frame)
Front axle:	4.5 inch diameter 114 mm
Rear axle:	4.5 inch diameter 114 mm