Challenger MT645C

The Challenger MT645C is a tractor produced by Challenger. It is equipped with a 512.6 ci 8.4 L engine. The listed engine power is Diesel (gross): 240 hp / 179.0 kW. Transmission: Techstar CVT. Operating weight: 24250 to 25795 pounds.

Engine Power

Diesel (gross): 240 hp / 179.0 kW

Fuel & Capacities

155.9 gal 590.1 L

Transmission

Techstar CVT

Operating Weight

24250 to 25795 pounds

Overview

	2009 - 2010 MT600C SeriesRow-Crop tractor MT600C Series Row-Crop tractor

Production
Manufacturer	Challenger (a part of AGCO)
Row-Crop tractor
Built in Beauvais, France
Original price was $206,331 in 2009

Variants
8650	similar Massey Ferguson model

Challenger MT645C Engine
AGCO SISU POWER 8.4L 6-cyl diesel
Fuel tank	155.9 gal 590.1 L
	182.3 gal (without SCR) 690.0 L
Exhaust fluid (DEF)	7.9 gal 29.9 L
Engine details ...

Challenger MT645C Transmission
continuously variable transmission
Transmission details ...

Challenger MT645C Power
Engine (gross)	240 hp 179.0 kW
PTO (claimed)	205 hp 152.9 kW
Drawbar (tested)	180.1 hp 134.3 kW
PTO (tested)	250.0 hp 186.4 kW
Performance test details ...

Mechanical
Four-wheel drive
Final drives	planetary
Differential lock	electro-hydraulic front and rear
Power steering
Hydraulic wet disc brakes
Cab standard with heat and air-conditioning. Optional heated seat, power adjustable mirrors, and automatic temperature control.

Hydraulics
Type	closed center load sensing
Pressure	2,901 psi 200.0 bar
Valves	4 to 6
Pump flow	26.4 gpm 99.9 lpm
Total flow	46.2 gpm 174.9 lpm

Tractor hitch
Rear Type	III
Control	electronic lower-link draft sensing
Rear lift (at ends)	26,460 lbs 12002 kg
Rear lift (at 24"/610mm)	21,336 lbs 9678 kg
Front Hitch	III
Front lift (at ends)	11,020 lbs 4998 kg

Power Take-off (PTO)
Rear PTO	independent
Clutch	electro-hydraulic
Rear PTO Type	1000E/1000 (1.75)
	540E/1000 (1.375)OptOptional
Front PTO	independent OptOptional
Front PTO Type	1000 (1.375)

Dimensions & Tires
Wheelbase	122.2 inches 310 cm
Weight	24250 to 25795 pounds
Front tire	480/70R34
Rear tire	520/85R46
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	240 *Two 120A alternators.
Batteries	2
Battery CCA	775
Battery volts	12

References

Challenger - The New MT600C Series published in 2009, by AGCO

Engine

Engine Detail — 512.6 ci / 8.4 L Diesel

Manufacturer	AGCO SISU POWER 84CTA
Configuration	turbocharged intercooled diesel, 6-cylinder, liquid-cooled
The engine uses AGCO's e3 selective catalytic reduction (SCR) system to reduce nitrogen oxides (NOx). An exhaust-gas recirculation (IEGR) version of the engine was optionally available.
Displacement	512.6 ci 8.4 L
Bore/Stroke	4.37x5.71 inches 111 x 145 mm
Emissions	Interim Tier 4
Emission control	selective catalytic reduction (SCR)
	integrated exhaust gas recirculation optional (IECR)
Power (gross)	240 hp 179.0 kW
Maximum Power	270 hp 201.3 kW
Fuel system	electronic high-pressure common rail
Compression	16.7:1
Rated RPM	2200
Torque	874 lb-ft 1185.1 Nm
Torque RPM	1500
Starter	electric
Starter volts	12

Challenger MT645C Engine

Transmission

Transmission — Techstar CVT

Transmission	Techstar CVT
Type	continuously variable transmission
Gears	infinite forward and reverse

Dimensions

Challenger MT645C Tires
Standard tires (ag)	Front: 480/70R34. Rear: 520/85R46

Dimensions
Wheelbase	122.2 inches 310 cm
Length	223.2 inches 566 cm
Height (cab)	133.1 inches 338 cm
Bar rear axle	4.33 by 118 inches 109 by 2997 mm
Front tread	73.1/76.9 inches 185/195 cm
Front tread	60.9 to 88.8 inches 154 to 225 cm
Rear tread	58.5 to 119.5 inches 148 to 303 cm

Challenger MT645C Weight
Shipping	24,250 lbs 10999 kg
Operating	25,795 lbs 11700 kg
Max capacity	38,890 lbs 17640 kg

Tests

Tractor Tests
OECD 2496: SCR diesel Techstar CVT 4WD
OECD 2557: IEGR diesel Techstar CVT 4WD

OCED Tractor Test 2496
SCR diesel Techstar CVT 4WD October 2008 - November 2009, Link: OCED Tractor Test 2496 file
PTO performance
Max power	242.3 hp 180.7 kW
Fuel use	12.1 gal/hour 45.8 l/hour
Power at rated engine speed	212.7 hp 158.6 kW
Fuel use	11.6 gal/hour 43.9 l/hour
Power at rated PTO speed	232.9 hp 173.7 kW
Fuel use	12.1 gal/hour 45.8 l/hour
Drawbar performance
Max power	180.1 hp 134.3 kW
Fuel use	11.6 gal/hour 43.9 l/hour
Pull at 7.6 KPH
Max pull	26,505 lbs 12022 kg
Pull at 3.9 KPH

OCED Tractor Test 2557
IEGR diesel Techstar CVT 4WD October 2009 - March 2010, Link: OCED Tractor Test 2557 file
PTO performance
Max power	250.0 hp 186.4 kW
Fuel use	14.0 gal/hour 53.0 l/hour
Power at rated engine speed	216.2 hp 161.2 kW
Fuel use	13.5 gal/hour 51.1 l/hour
Power at rated PTO speed	239.0 hp 178.2 kW
Fuel use	13.8 gal/hour 52.2 l/hour
Drawbar performance
Max power	175.1 hp 130.6 kW
Fuel use	13.5 gal/hour 51.1 l/hour
Pull at 7.50 KPH
Max pull	26770 lbs 12142 kg
Pull at 4.02 KPH

Photos

Challenger MT645C tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Challenger MT645C based on its 240 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁	Commercial / Field Scale	High horsepower articulated/4WD field plowing.
Rotary Cutter / MowerMowing & Clearing	15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼	Commercial / Field Scale	Large commercial field and roadside mowing operations.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙	Commercial / Field Scale	Broad-acre grain tillage for high-drawbar tractors.
Hay BalerHay & Forage	Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m)	Commercial / Field Scale	High-capacity commercial forage harvesting (1000 RPM PTO).

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Challenger MT645C.

Estimated Continuous Field Runtime: 12.5 hrs

Approximately 12.5 hours of continuous field operation at ~75% rated power on a full tank (155.9 gal / 590.1 L).

Estimated 75% Load Fuel Burn~12.5 gal/hr (47.2 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours