Challenger MT645B

Last Updated: June 2024

Overview

The Challenger MT645B features a robust 235 horsepower engine from Sisu, model 74ETA. The engine is a liquid-cooled, vertical inline, turbocharged diesel with a displacement of 449 cubic inches. It runs at a rated RPM of 2200. The tractor uses a continuously variable transmission (CVT), allowing for infinite gears in both forward and reverse. The tractor operates at a weight of 19,595 lbs. with a length, width, and height of 206 inches, 118 inches, and 123.6 inches respectively. The MT645B is equipped with a pressure flow compensated (PFC) hydraulic system.

Key Specifications

Power Output: 235

Transmission: continuously variable transmission (CVT)

Operating Weight: 19595

Fuel Type: Diesel

Technical Specifications

Engine

Manufacturer: Sisu
Model: 74ETA
Cooling Type: Liquid-cooled
Cylinder Orientation: Vertical Inline
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Turbocharged
Cylinders: 6
Displacement (ci): 449
Bore (in): 4.251
Stroke (in): 5.278
Rated RPM: 2200
Power Output (hp): 235

Transmission

Type: continuously variable transmission (CVT)
Forward Gears: infinite
Reverse Gears: infinite
Total Gears: -

Dimensions

Length (in): 206
Width (in): 118
Height (in): 123.6 (cab height)
Operating Weight (lb): 19595

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): 35.6
Front Tire Diameter (in): 34
Front Tire Width (in): 14.96
Rear Tire Diameter (in): 46
Rear Tire Width (in): 18.9
Front/Rear Rim Diameter (in): -
Tire Type: Ag
Manufacture - End Year: -
Hitch Type: III
Hitch Category: -
Hitch Position: Rear
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric
Brake Type: -
Hydraulic System Type: Pressure Flow Compensated (PFC)