Challenger MT565B

Last Updated: July 2024

Overview

The Challenger MT565B is an agricultural tractor powered by a Perkins VK 31483 turbocharged diesel engine with a displacement of 366 cubic inches. It delivers a maximum power output of 151.8 hp at 1950 rpm and a rated PTO power of 146.1 hp at 2190 rpm. The transmission is a 32-speed selective gear fixed ratio with partial (4) range operator-controlled power shift. Key performance metrics include a maximum torque of 477.4 lb-ft, drawbar performance of 110 hp with 7375 lbs pull, and fuel efficiency ranging from 0.418 to 0.448 lb/hp.hr depending on operating conditions. The hydraulic system features a maximum force of 17400 lbs, pump delivery rate of 28.4 GPM, and hydraulic power of 32.7 hp. The unladen tractor weight is 14320 lbs. Additional details on brakes, sound levels, three-point hitch performance, and hydraulic system specifications are provided based on independent test results.
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Key Specifications

Category: Agricultural

Power Output: 151.8 hp at 1950 rpm (maximum power); 146.1 hp at 2190 rpm (rated PTO power)

Transmission: Partial power shift

Drive Type: 2WD or 4WD Depending on model

Operating Weight: 14320 lb (unladen)

Fuel Type: Diesel

Challenger MT565B vs. Similar Tractors

Power Output
Excellent
Greater than 99% of similar tractors.
Operating Weight
Excellent
Greater than 100% of similar tractors.

Technical Specifications

Engine

Manufacturer
Perkins
Model
VK 31483
Cooling Type
Liquid-cooled
Cylinder Orientation
Vertical inline
Valve Configuration
-
Fuel Type
Diesel
Induction Type
Turbocharged
Cylinders
6
Displacement (ci)
366
Bore (in)
-
Stroke (in)
-
Rated RPM
2200
Power Output (hp)
151.8 hp at 1950 rpm (maximum power); 146.1 hp at 2190 rpm (rated PTO power)

Transmission

Type
Partial power shift
Forward Gears
32 speed selective gear fixed ratio with partial (4) range operator controlled power shift
Reverse Gears
32 (Deduced from forward gears)
Total Gears
-

Dimensions

Length (in)
182.3
Width (in)
81.1
Height (in)
112.8 (with cab)
Operating Weight (lb)
14320 lb (unladen)

Power Take-Off (PTO)

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

Miscellaneous

Chassis
4x2 or 4x4 Depending on drive configuration
Drive Type
2WD or 4WD Depending on model
Steering Type
Hydrostatic power
Coolant Capacity (qts)
26.92 (Retained from original specs due to lack of data)
Front Tire Diameter (in)
-
Front Tire Width (in)
-
Rear Tire Diameter (in)
-
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Ag tires
Manufacture - End Year
-
Hitch Type
Rear
Hitch Category
II/III
Hitch Position
Rear
Hitch Capacity (lb)
-
Operator Station Type
Cab
Starter Type
Electric Starter
Brake Type
Multiple wet disc operated by two locked foot pedals
Hydraulic System Type
Direct engine drive

Test Results

Nebraska Tractor Test Laboratory - Test Date: September - October 2005

Maximum Power and Fuel Consumption

  • Rated Engine Speed (PTO speed—1095 rpm): 146.1 HP (109.0 kW) at 2190 rpm
  • Fuel Consumption at Rated Engine Speed: 9.20 Gal/hr (34.83 l/h) with a fuel efficiency of 0.448 lb/hp.hr (0.273 kg/kW.h)
  • Maximum Power (1 hour): 151.8 HP (113.2 kW) at 1950 rpm
  • Fuel Efficiency at Maximum Power: 16.99 Hp.hr/gal (3.35 kW.h/l)

Drawbar Performance

  • Maximum Power in 15th (1LA) Gear: 110.0 HP (82.0 kW) with a drawbar pull of 7375 lbs (32.8 kN) at a speed of 5.59 mph (9.00 km/h) and slip of 3.3%
  • Fuel Consumption in 15th Gear: 0.566 lb/hp.hr (0.344 kg/kW.h) and 12.54 Hp.hr/gal (2.47 kW.h/l)

Torque and Engine Performance

  • Maximum Torque: 477.4 lb.-ft. (647.3 Nm) at 1401 rpm
  • Torque Rise: 36.2% with a torque rise at 1750 engine rpm of 26%

Hydraulic Performance

  • Maximum Force Exerted: 17400 lbs (77.4 kN) at hitch points
  • Pump Delivery Rate at Minimum Pressure: 28.4 GPM (107.6 l/min)
  • Hydraulic Power: 32.7 HP (24.4 kW) at delivery pressure of 2235 psi (161 bar)

Overall Efficiency

  • Fuel Efficiency at Standard PTO Speed (1000 rpm): 16.79 Hp.hr/gal (3.31 kW.h/l)
  • Fuel Consumption at Standard PTO Speed: 9.00 Gal/hr (34.08 l/h) with a fuel efficiency of 0.423 lb/hp.hr (0.258 kg/kW.h)



Nebraska Tractor Test Lab.(2005).Nebraska Summary: S519 Challenger MT565B. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/3122

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