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Challenger MT645B

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Challenger MT645B
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Farm Tractors
Production
Model Year 2005  
Production Manufacturer
AGCO 
5.8% Farm Tractors have AGCO
Factory Beauvais, France 
Capacity
Capacity Fuel
159 gal
70.35 gal
Hydraulic system
26.4 gal
19.42 gal
Power Take-off (PTO)
Rear RPMs
540 
608.25
Rear PTO Independent  78.6% Farm Tractors have independent
Mechanical
Mechanical Steering Hydrostatic Power  81.1% Farm Tractors have hydrostatic power
Chassis 4x4 Mfwd 4wd  52.8% Farm Tractors have 4x4 MFWD 4WD
Brakes Hydraulic Wet Disc  24.3% Farm Tractors have hydraulic wet disc
Cab Cab Standard With Heat And A/c. Optional Pneumatic Cab Suspension And Automatic Climate Control. 
Differential lock Electrohydraulic Front And Rear 
Trailer brakes Hydraulic Optional 
Engine
Engine Fuel Diesel  87.6% Farm Tractors have diesel
Engine Type Sisu 74eta Vertical Inline  0.2% Farm Tractors have Sisu 74ETA vertical inline
Engine Aspiration Turbocharged  36% Farm Tractors have turbocharged
Engine Cylinders
4.46
Engine Bore/Stroke 4.251x5.278 Inches [108 X 134 Mm] 
Engine Displacement
449 ci
306.10 ci
Engine Cooling Liquid  86% Farm Tractors have Liquid
Engine Compression 17.5:1  
Engine Rated RPMs
2200 
2,340
Engine Starter volts
12 
12.58
Engine Air cleaner Dual Paper Elements 
Engine Valves
24 
21.13
Engine Oil capacity
20 qts
16.93 qts
Engine Coolant
35.6 qts
23.79 qts
Pre-heating 1000w Coolant Heater (optional) 
Transmission
Transmission Type Continuously Variable Transmission (cvt)  1.5% Farm Tractors have continuously variable transmission (CVT)
Transmission Oil capacity
70.8 qts
58.78 qts
Transmission Transmission Techstar 
Transmission Gears Infinite (2-range) Forward And Reverse 
Transmission Speeds   
Dimensions
Dimensions Width
118 inches
72.18 inches
Wheelbase
121.1 inches
94.33 inches
Weight (operating)
19595 lbs
18,724 lbs
Length
206 inches
161.96 inches
Height (cab)
123.6 inches
109.54 inches
Rear tread 60 To 88 Inches [152 To 223 Cm] 
Hydraulics
Hydraulics Type Pressure Flow Compensated (pfc) 
Hydraulics Valves
4 to
2.64 to
Pressure
2900 psi
2,737 psi
Capacity (cu. ft.)
26.4 gal
19.42 gal
Total flow
39 gpm
24.65 gpm
3-Point Hitch
Rear Type
III 
4.7% Farm Tractors have III
Rear lift (at 24"/610mm)
15600 lbs
6,099 lbs
Front Hitch Ii (optional) 
Front lift 7, 700 Lbs [3492 Kg] 12, 100 Lbs [5488 Kg] (optional) 
Power
PTO (claimed)
200 hp
112.68 hp
PTO (tested)
222.9 hp
177.25 hp
Drawbar (tested)
172.3 hp
163.95 hp
Electrical
Ground Negative 
Charging system Alternator 
Charging amps
150 
111.12
Tires
Ag front 380/85R34  
Ag rear 480/80R46  
Battery
Volts
12 
12.00
Number
1.65
Cold-cranking amps
775 
838.52

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