Challenger MT645
The Challenger MT645 is a tractor produced by Challenger. It is equipped with a 449 ci 7.4 L engine. The rated power output is 181.26 hp 135.2 kW. Transmission: 18 forward and 6 reverse. Operating weight: 19000 lbs 8618 kg.
Engine Power
184.49 hp
137.6 kW
Fuel & Capacities
120 gal
454.2 L
Transmission
18 forward and 6 reverse
Operating Weight
19000 lbs
8618 kg
Challenger MT645 Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
 | 2002 - 2003
MT600 SeriesRow-Crop tractor |
|---|---|
2002 - 2003 | |
MT600 Series | |
Row-Crop tractor | |
Production | |
|---|---|
Manufacturer | Challenger (a part of AGCO) |
Row-Crop tractor | |
Built in Beauvais, France | |
The Challenger MT645 is similar to the Massey Ferguson 8260. | |
Challenger MT645 Engine | |
|---|---|
Sisu 7.4L 6-cyl diesel | |
Fuel tank | 120 gal
454.2 L |
Engine details ...  | |
Challenger MT645 Transmission | |
|---|---|
18-speed power shift | |
Transmission details ...  |
Challenger MT645 Power | |
|---|---|
PTO (claimed) | 180 hp
134.2 kW |
PTO (tested) | 184.49 hp
137.6 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Power steering | |
Hydraulic wet disc brakes | |
Cab standard with air-conditioning. |
Hydraulics | |
|---|---|
Type | closed center pressure flow compensated (PFC) |
Pressure | 2900 psi
200.0 bar |
Valves | 4 |
Total flow | 29 gpm
109.8 lpm |
39 gpmOptOptional
147.6 lpm | |
Tractor hitch | |
|---|---|
Rear Type | III |
Rear lift (at 24"/610mm) | 18400 lbs
8346 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 |
Engine RPM | 1000@2091 |
Dimensions & Tires | |
|---|---|
Wheelbase | 121 inches
307 cm |
Weight | 19000 lbs
8618 kg |
Front tire | 14.9R30 |
Rear tire | 18.4R42 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Battery volts | 12 |
References | |
|---|---|
 | |
Challenger MT500/MT600 published in 2002, by AGCO |
Engine
Engine Detail — 449 ci / 7.4 L Diesel
Manufacturer | Sisu |
Configuration | turbocharged aftercooled diesel, 6-cylinder, liquid-cooled vertical |
Displacement | 449 ci
7.4 L |
Bore/Stroke | 4.251x5.278 inches
108 x 134 mm |
Air cleaner | dual paper elements |
Compression | 16.5:1 |
Rated RPM | 2200 |
Starter volts | 12 |
Transmission
Transmission — 18 forward and 6 reverse power shift
Type | power shift |
Gears | 18 forward and 6 reverse |
Clutch | electro-hydraulic wet disc |
 | |
Dimensions
Challenger MT645 Tires | |
|---|---|
Ag front | 14.9R30 |
Ag rear | 18.4R42 |
Dimensions | |
|---|---|
Wheelbase | 121 inches
307 cm |
Length | 203 inches
515 cm |
Width | 98.2 inches*Minimum width
249 cm |
Height (cab) | 121 inches
307 cm |
Shipping weight | 19000 lbs
8618 kg |
Tests
Nebraska Tractor Test 1782C | |
|---|---|
Diesel 18-speed 4WD
September 19 - 26, 2000
Link: Nebraska Tractor Test 1782C file | |
PTO performance | |
Max power | 184.49 hp
137.6 kW |
Fuel use | 10.6 gal/hour
40.1 l/hour |
Power at rated engine speed | 181.26 hp
135.2 kW |
Fuel use | 11.3 gal/hour
42.8 l/hour |
Power at rated PTO speed | 183.87 hp
137.1 kW |
Fuel use | 10.9 gal/hour
41.3 l/hour |
Photos
Challenger MT645 tractor photo
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