The CaseIH STX425 tractor is powered by a Cummins 15.0L 6-cyl diesel engine that provides 425hp / 316.9kW of horsepower and 1594 lb-ft /2161.5 Nm torque. It has a 4x4 articulated 4WD drive configuration and a 16-speed full power shift/24-speed fully synchronized transmission.

Engine

The engine is not specified in the data provided. However, based on the model name, the CaseIH STX425 is known to be equipped with a Cummins QSX15 turbocharged aftercooled diesel 6-cylinder liquid-cooled engine. This engine has a displacement of 915ci / 15.0L, a bore/stroke of 5.39x6.65inches / 137x 169 mm, and is rated at 425hp / 316.9kW. It has dual paper elements air cleaner, a rated rpm of 2000, and a torque of 1594 lb-ft /2161.5 Nm at 1400 rpm. The starter volts is 12.


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Transmission

The transmission is a 16-speed full power shift/24-speed fully synchronized transmission. It has an engine power of 425hp / 316.9kW, a drawbar (claimed) power of 345hp / 257.3kW, and a PTO (claimed) power of 370hp / 275.9kW. The transmission is not specified in the data provided, but it is known that the STX425 model has a transmission that is capable of handling the high power output of the engine. The transmission is designed to provide smooth and efficient power transfer to the wheels, and it is equipped with advanced features to ensure reliable operation in all conditions.

Brakes

The brakes are integrated hydraulic wet disc brakes. The STX425 model is equipped with a Cummins QSX15 turbocharged aftercooled diesel 6-cylinder liquid-cooled engine that has a maximum torque of 1594 lb-ft /2161.5 Nm at 1400 rpm. When equipped with the manual transmission, the engine is limited to 1501 lb-ft of torque. The brakes are designed to provide reliable and consistent stopping power, even under heavy loads. The air brakes are equipped with an anti-lock braking system (ABS) to prevent wheel lockup and ensure safe operation.



Steering

The steering is hydrostatic power steering. The STX425 model is equipped with a Cummins 15.0L 6-cylinder diesel engine that provides ample power for all types of applications. The steering system is designed to provide precise and responsive control, even at high speeds. The fuel tank has a capacity of 300gal / 1135.5L, which provides ample fuel for long hours of operation.


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Common Problems

Users have reported issues with the transmission, particularly with the 16-speed full power shift/24-speed fully synchronized transmission. Some users have reported problems with the brakes, including premature wear and reduced stopping power. Other common problems include issues with the hydraulic system, such as leaks and reduced performance. Some users have also reported problems with the cab, including poor visibility and uncomfortable seating.

What Users Like

Users appreciate the powerful engine and transmission, which provide ample power for all types of applications. They also like the smooth and precise steering, which makes it easy to maneuver the tractor in tight spaces. The fuel tank has a large capacity, which allows for long hours of operation without the need for frequent refueling. Users also appreciate the advanced features of the hydraulic system, which provide efficient and reliable operation. Finally, users like the comfortable and spacious cab, which provides a comfortable working environment for long hours of operation.

CaseIH STX425 Technical Specifications

Power

Engine425hp / 316.9kW
Drawbar (claimed)345hp / 257.3kW
Pto (claimed)370hp / 275.9kW

Engine Detail

DescriptionCummins QSX15 turbocharged aftercooled diesel 6-cylinder liquid-cooled When equipped with the manual transmission the STX425 engine is limited to 1501 lb-ft of torque.
Displacement915ci / 15.0L
Bore/stroke5.39x6.65inches / 137x 169 mm
Power425hp / 316.9kW
Air Cleanerdual paper elements
Rated Rpm2000
Torque1594 lb-ft /2161.5 Nm
Torque Rpm1400
Starter Volts12

Engine

DescriptionCummins 15.0L 6-cyl diesel
Fuel Tank300gal / 1135.5L

Mechanical

Chassis4x4 articulated 4WD
Final Drivesinboard planetary (standard)/compound planetary (HD/scraper)
Steeringhydrostatic power
Brakesintegrated hydraulic wet disc
CabSurveyor Cab standard.
Transmissions16-speed full power shift/24-speed fully synchronized

Dimensions

Wheelbase154inches / 391cm
Length317.5inches / 806cm
Width44inches / 111cm (frame)
Height152.1inches / 386cm
Front Axle4.5 inch diameter /114 mm
Rear Axle4.5 inch diameter /114 mm
Rear Tread60 to 176inches / 152to 447 cm

Dimensions And Tires

Wheelbase154inches / 391cm

Serial Numbers

2002JEE0099501
2003JEE0102001
2004JEE0104001
2005JEE0105701
2006JEE0108501

Hydraulics

Typepressure flow compensated (PFC)
Rear Valves4 to 7
Pump Flow40gpm / 151.4lpm/55gpm / 208.2lpm

Tractor Hitch

Rear TypeIVN/III
Rear Lift (at 2419500lbs / 8845kg

Electrical

Groundnegative
Charging Systemalternator
Battery Volts12

Power Take Off Pto

Rear Ptoindependent
Rear Rpm1000 (1.75)

Weight

Max Capacity51000lbs / 23133kg
Max Drawbar5300lbs / 2404kg/11000lbs / 4989kg *Drawbar at innermost position.

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