Challenger MT645 Specs ( 2002-2003 )
Overview
The Challenger MT645 is a 180 hp row-crop farm tractor manufactured by AGCO in Beauvais, France, between 2002 and 2003. It is equipped with a Sisu 7.4L six-cylinder turbocharged aftercooled diesel engine and an 18-speed power shift transmission.
Ideal Applications
Tested PTO Performance:
During Nebraska Tractor Test 1782C, the MT645 recorded a maximum power of 184.49 hp and a fuel consumption rate of 11.3 gallons per hour at rated engine speed.
Hydraulic and Hitch Specifications:
The tractor features a closed center pressure flow compensated hydraulic system with a 29 gpm flow rate and a Type III rear hitch capable of lifting 18,400 lbs.
Chassis and Drive Dimensions:
This four-wheel drive model is built on a 121-inch wheelbase with a shipping weight of 19,000 lbs and standard 18.4R42 rear ag tires.
Production
| Description | Row-Crop tractor / Built in Beauvais, France / The Challenger MT645 is similar to the Massey Ferguson 8260. |
|---|---|
| Manufacturer | Challenger (a part of AGCO) |
Engine
| Engine type | Sisu 7.4L 6-cyl diesel |
|---|---|
| Fuel tank | 120 gal (454.2 L) |
| Air cleaner | dual paper elements |
| Bore/Stroke | 4.251x5.278 inches (108 x 134 mm) |
| Compression | 16.5:1 |
| Description | Sisu / turbocharged aftercooled diesel / 6-cylinder / liquid-cooled vertical |
| Displacement | 449 ci (7.4 L) |
| Rated RPM | 2200 |
| Starter volts | 12 |
| PTO (claimed) | 180 hp (134.2 kW) |
| PTO (tested) | 184.49 hp (137.6 kW) |
Transmission
| Clutch | electro-hydraulic wet disc |
|---|---|
| Gears | 18 forward and 6 reverse |
| Transmission type | 18-speed power shift |
| Type | power shift |
Mechanical
| Cab | Cab standard with air-conditioning. |
|---|---|
| Description | Power steering / Hydraulic wet disc brakes |
| Drive type | Four-wheel drive |
Hydraulics
| Pressure | 2900 psi (200.0 bar) |
|---|---|
| Total flow | 29 gpm (109.8 lpm) |
| Type | closed center pressure flow compensated (PFC) |
| Valves | 4 |
Hitch
| Rear lift (at 24"/610mm) | 18400 lbs (8346 kg) |
|---|---|
| Rear Type | III |
PTO
| Engine RPM | 1000@2091 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 1000 |
Electrical
| Battery volts | 12 |
|---|---|
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Ag front | 14.9R30 |
|---|---|
| Ag rear | 18.4R42 |
| Height (cab) | 121 inches (307 cm) |
| Length | 203 inches (515 cm) |
| Shipping weight | 19000 lbs (8618 kg) |
| Wheelbase | 121 inches (307 cm) |
| Width | 98.2 inches*Minimum width (249 cm) |
| Front tire | 14.9R30 |
| Rear tire | 18.4R42 |
| Weight | 19000 lbs (8618 kg) |
| Wheelbase | 121 inches (307 cm) |
Nebraska Tractor Test 1782C
| Description | Diesel 18-speed 4WDSeptember 19 - 26, 2000Link: Nebraska Tractor Test 1782C file / PTO performance |
|---|---|
| Fuel use | 10.6 gal/hour (40.1 l/hour) / 11.3 gal/hour (42.8 l/hour) / 10.9 gal/hour (41.3 l/hour) |
| Max power | 184.49 hp (137.6 kW) |
| Power at rated engine speed | 181.26 hp (135.2 kW) |
| Power at rated PTO speed | 183.87 hp (137.1 kW) |
References
| Description | Challenger MT500/MT600 published in 2002, by AGCO |
|---|