Challenger MT685E

Last Updated: July 2024

Overview

The Challenger MT685E is a powerful tractor with a 6-cylinder, 24-valve, turbocharged engine producing 304.8 hp at 2097 rpm. It features a CVT transmission with two speed ranges for both forward and reverse. The engine displacement is 513 cubic inches, and it operates at a rated RPM of 2100. The tractor's operating weight is 24835 lbs. It has front-wheel assist and uses DEF technology. The hydraulic system can exert a maximum force of 20390 lbs at the hitch point, with a pump delivery rate of 53.1 GPM.

Key Specifications

Power Output: 304.8

Transmission: Continuously Variable Transmission (CVT)

Operating Weight: 24835

Fuel Type: Diesel

Technical Specifications

Engine

Manufacturer: AGCO POWER
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: 24-valve
Fuel Type: Diesel
Induction Type: Turbocharged with Air-to-air Intercooler
Cylinders: 6
Displacement (ci): 513
Bore (in): 4.37
Stroke (in): 5.71
Rated RPM: 2100
Power Output (hp): 304.8

Transmission

Type: Continuously Variable Transmission (CVT)
Forward Gears: 2 ranges: Low 0-20 mph (0-32 km/h), High 0-25 mph (0-40 km/h)
Reverse Gears: 2 ranges: Low 0-12 mph (0-20 km/h), High 0-18 mph (0-30 km/h)
Total Gears: -

Dimensions

Length (in): 218.6
Width (in): -
Height (in): 141
Operating Weight (lb): 24835

Power Take-Off (PTO)

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

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: Hydrostatic Power
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/IVN
Hitch Category: Category 3/4N
Hitch Position: Rear
Hitch Capacity (lb): -
Operator Station Type: Cab
Starter Type: Electric
Brake Type: -
Hydraulic System Type: Closed Center Load Sensing (CCLS)

Test Results

Nebraska Tractor Test Laboratory - Test Dates: January to April, 2015

Maximum Power and Fuel Consumption

Maximum Power: 304.8 HP (227.3 kW) at 2097 rpm
Fuel Consumption at Maximum Power: 17.11 Gal/hr (66.02 l/h) with a fuel efficiency of 0.399 lb/hp.hr (0.243 kg/kW.h)
DEF Consumption: 0.82 Gal/hr (3.1 l/h)

Drawbar Performance

Power at Rated Engine Speed: 189.6 HP (141.4 kW) with a drawbar pull of 11285 lbs (50.2 kN), and a speed of 5.00 mph (8.05 km/h)
Fuel Consumption at Rated Speed: 0.512 lb/hp.hr (0.312 kg/kW.h) with a fuel efficiency of 13.49 Hp.hr/gal (2.66 kW.h/l) in Rabbit II gear.

Torque and Engine Performance

Maximum Torque: 1050 lb.-ft. (1424 Nm) at 1304 rpm
Torque Rise: 37.7%, with a torque rise at 1690 engine rpm of 28% and a power increase at 1952 engine rpm of 7.1%

Hydraulic Performance

Maximum Force Exerted: 20390 lbs (90.7 kN) at hitch point (24" behind Quick Attach ends)
Pump Delivery Rate: 53.1 GPM (201.1 l/min) at minimum pressure
Hydraulic Power: 67.3 HP (50.2 kW) at delivery pressure of 2435 psi (168 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 17.94 Hp.hr/gal (3.53 kW.h/l)
Fuel Consumption: 7.95 Gal/hr (30.1 l/h) at 1952 rpm

Nebraska Tractor Test Lab. (2015). Nebraska Summary: S998 Challenger MT685E. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/3298