Home
Tractors
AGCO S.A.
MT655C SCR

AGCO S.A. MT655C SCR

Last Updated: July 2024

Overview

The AGCO S.A. MT655C SCR tractor is powered by a Sisu Diesel 84CTA turbocharged intercooled 6-cylinder diesel engine with 513 cubic inch displacement. It produces 234 hp at the rated 2200 RPM, with a maximum power output of 266.3 hp at 1850 RPM. The tractor uses selective catalytic reduction (SCR) with diesel exhaust fluid injection for emission control. It has a continuously variable transmission with infinite forward and reverse gears. Key features include a closed-center hydraulic system, front-wheel assist with dual tires, and hydrostatic steering. Detailed tire specifications, hydraulic performance metrics, fuel efficiency data, and weight information for ballasted/unballasted configurations are available from the independent test results.

Key Specifications

Power Output: 234

Transmission: continuously variable transmission (CVT)

Operating Weight: 25795

Fuel Type: diesel

Technical Specifications

Engine

Manufacturer: Sisu Diesel
Model: 84CTA
Cooling Type: liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: diesel
Induction Type: turbocharged intercooled
Cylinders: 6
Displacement (ci): 513.0
Bore (in): 4.37
Stroke (in): 5.71
Rated RPM: 2200
Power Output (hp): 234

Transmission

Type: continuously variable transmission (CVT)
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): 34
Front Tire Width (in): 18.9
Rear Tire Diameter (in): 46
Rear Tire Width (in): 20.47
Front/Rear Rim Diameter (in): -
Tire Type: Ag
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric Starter
Brake Type: -
Hydraulic System Type: Closed Center

Test Results

Nebraska Tractor Test Laboratory - Test Date: October - November 2008

Maximum Power and Fuel Consumption

Maximum Power: 266.3 HP (198.6 kW) at 1850 rpm
Fuel Consumption at Maximum Power: 13.23 Gal/hr (50.07 l/h) with a fuel efficiency of 0.346 lb/hp.hr (0.211 kg/kW.h)
Standard Power Take-off Speed: 256.9 HP (191.6 kW) at 2035 rpm with fuel consumption of 13.28 Gal/hr (50.27 l/h)

Drawbar Performance

Maximum Power (Unballasted, Front Drive Engaged, Turtle 9 Gear): 194.9 HP (145.3 kW) with a drawbar pull of 13,490 lbs (60.00 kN) and a speed of 5.42 mph (8.72 km/h)
Fuel Consumption at Maximum Power: 0.442 lb/hp.hr (0.269 kg/kW.h) with a fuel efficiency of 15.79 Hp.hr/gal (3.11 kW.h/l)

Torque and Engine Performance

Maximum Torque: 901 lb.-ft. (1222 Nm) at 1400 rpm
Torque Rise: 61.4% with a power increase at 1850 rpm of 13.8%

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 2770 psi (191 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 19.34 Hp.hr/gal (3.81 kW.h/l)
Fuel Consumption at Rated Engine Speed: 12.58 Gal/hr (47.63 l/h) at 2200 rpm

NTTL. (2008). Nebraska Summary: S657 Challenger MT655C SCR. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/3152