Challenger MT645C

Last Updated: July 2024

Key Specifications

Power Output: 242.3

Transmission: Continuously variable transmission

Operating Weight: 25795

Fuel Type: Diesel

Lift Capacity: 26459.9 lbs @ 24 inches

Technical Specifications

Engine

Manufacturer: AGCO
Model: Sisu Diesel (Serial No. T00767)
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Turbocharged intercooled
Cylinders: 6
Displacement (ci): 513
Bore (in): 4.37
Stroke (in): 5.71
Rated RPM: 2200
Power Output (hp): 242.3

Transmission

Type: Continuously variable transmission
Forward Gears: Infinite
Reverse Gears: Infinite
Total Gears: -

Dimensions

Length (in): 223.2
Width (in): -
Height (in): 133.1
Operating Weight (lb): 25795

Power Take-Off (PTO)

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

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
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: III
Hitch Category: -
Hitch Position: Rear
Hitch Capacity (lb): 26459.9 lbs @ 24 inches
Operator Station Type: -
Starter Type: Electric Starter
Brake Type: -
Hydraulic System Type: Closed center load sensing

Test Results

Nebraska Tractor Test Laboratory - Test Date: October 2008 to February 2009

Maximum Power and Fuel Consumption

Maximum Power: 242.3 HP (180.7 kW) at 1850 rpm
Fuel Consumption at Maximum Power: 12.15 Gal/hr (45.99 l/h) with a fuel efficiency of 0.350 lb/hp.hr (0.213 kg/kW.h)
Fuel Efficiency: 19.95 Hp.hr/gal (3.93 kW.h/l)

Drawbar Performance

Maximum Power (Unballasted, Front Drive Engaged): 180.1 HP (134.3 kW) with a drawbar pull of 14,275 lbs (63.50 kN) at 4.73 mph (7.61 km/h)
Fuel Consumption at Maximum Power: 0.449 lb/hp.hr (0.273 kg/kW.h) with a fuel efficiency of 15.53 Hp.hr/gal (3.06 kW.h/l)

Torque and Engine Performance

Maximum Torque: 811 lb.-ft. (1100 Nm) at 1400 rpm
Torque Rise: 59.9% with a power increase at 1850 rpm of 13.9%

Hydraulic Performance

Maximum Force Exerted: 24,590 lbs (109.4 kN) at hitch points
Pump Delivery Rate: 51.0 GPM (193.2 l/min) at minimum pressure and rated engine speed
Hydraulic Power: 75.6 HP (56.4 kW) at delivery pressure of 3190 psi (220 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 19.17 Hp.hr/gal (3.78 kW.h/l)
Fuel Consumption: 12.15 Gal/hr (45.99 l/h) at 2035 rpm

Nebraska Tractor Test Lab, "Nebraska Summary: S656 Challenger MT645C SCR" (2008). Nebraska Tractor Tests. 3153. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/3153