Challenger MT755

Last Updated: July 2024

Overview

The Challenger MT755 is a powerful agricultural tractor equipped with a Caterpillar six-cylinder vertical turbocharged and air-to-air aftercooled diesel engine with 537 cubic inches displacement. Based on independent testing, it delivers a maximum power output of 270.23 hp at rated 2100 rpm. The transmission features selective gear fixed ratios with full-range operator-controlled power shift, offering 30 forward and 8 reverse gears. Key specifications include electro-hydraulic differential steering, a category 3 rear hitch, and hydraulic wet disc brakes. With an unladen weight of 29,365 lbs, it exhibits strong drawbar performance and hydraulic capabilities ideal for demanding agricultural operations.

Key Specifications

Power Output: 270.23

Transmission: Selective gear fixed ratio with full range operator controlled power shift

Operating Weight: 29,365

Fuel Type: Diesel

Technical Specifications

Engine

Manufacturer: Caterpillar
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: Six-cylinder vertical
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Turbocharged with air to air aftercooler
Cylinders: 6
Displacement (ci): 537
Bore (in): 4.409
Stroke (in): 5.866
Rated RPM: 2100
Power Output (hp): 270.23

Transmission

Type: Selective gear fixed ratio with full range operator controlled power shift
Forward Gears: 30
Reverse Gears: 8
Total Gears: -

Dimensions

Length (in): -
Width (in): Gauge: 60 to 88 / 80 to 120 / 120 to 160
Height (in): -
Operating Weight (lb): 29,365

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: Electro-hydraulic differential steering controlled by steering wheel
Coolant Capacity (qts): -
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: -
Hitch Type: Rear Type: III
Hitch Category: Category 3
Hitch Position: Rear
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric Starter (12 volts)
Brake Type: Hydraulic wet disc
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: October 3 to November 20, 2002

Maximum Power and Fuel Consumption

Maximum Power at PTO Speed (1000 rpm): 270.23 HP (201.51 kW) at 1801 rpm
Fuel Consumption at Maximum Power: 14.27 Gal/hr (54.00 l/h) with a fuel efficiency of 0.371 lb/hp.hr (0.225 kg/kW.h)
Fuel Efficiency at Standard PTO Speed: 18.28 Hp.hr/gal (3.60 kW.h/l)

Drawbar Performance

Power at Rated Engine Speed (6th Gear): 202.94 HP (151.33 kW) with a drawbar pull of 17,332 lbs (77.09 kN) and a speed of 4.39 mph (7.07 km/h)
Fuel Consumption at Rated Speed: 0.466 lb/hp.hr (0.284 kg/kW.h) with a fuel efficiency of 15.06 Hp.hr/gal (2.97 kW.h/l)

Torque and Engine Performance

Maximum Torque: 921 lb-ft (1248 Nm) at 1400 rpm
Torque Rise: 55.4% with a power increase at 1699 rpm of 41%

Hydraulic Performance

Maximum Force Exerted: 17,263 lbs (76.8 kN)
Pump Delivery Rate: 43.5 GPM (164.7 l/min) at minimum pressure and rated engine speed
Hydraulic Power: 67.8 HP (50.6 kW) at delivery pressure of 2756 psi (190 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 18.28 Hp.hr/gal (3.60 kW.h/l)
Fuel Consumption: 14.07 Gal/hr (53.28 l/h) at 1980 rpm

Nebraska Tractor Test Lab.(2002).Test 1812: Challenger MT755 Diesel. Lincoln, NE: University of Nebraska-Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/343