Challenger MT845B

The Challenger MT845B is a tractor produced by Challenger. It is equipped with a 928 ci 15.2 L engine. The rated power output is 400 hp 298.3 kW. Transmission: Cat Powershift. Drive type: crawler. Operating weight: 41000 to 43075 pounds.

Overview

	2005 - 2008 MT800B SeriesAgricultural Crawler tractor
2005 - 2008
MT800B Series
Agricultural Crawler tractor

Production
Manufacturer	Challenger (a part of AGCO)
Agricultural Crawler tractor
Built in Jackson, Minnesota, USA

Challenger MT845B Engine
Caterpillar 15.2L 6-cyl diesel
Fuel tank	305 gal 1154.4 L
	330 galOptOptional 1249.0 L
Engine details ...

Challenger MT845B Transmission
16-speed full power shift
Transmission details ...

Challenger MT845B Power
Engine (gross)	400 hp 298.3 kW
PTO (claimed)	335 hp 249.8 kW
Drawbar (tested)	313.27 hp 233.6 kW
PTO (tested)	402.32 hp 300.0 kW
Performance test details ...

Mechanical
Drive	crawler
Hydraulic wet disc brakes
Cab standard with air-conditioning.

Hydraulics
Type	closed center PFC
Pressure	2900 psi 200.0 bar
Rear valves	4 to 6
Total flow	43.5 gpm 164.6 lpm
	59 gpmOptOptional 223.3 lpm

Tractor hitch
Rear Type	III/IVN
Rear lift	19500 lbs 8845 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	1000 (1.75)

Dimensions & Tracks
Wheelbase	118 inches 299 cm
Weight	41000 to 43075 pounds
27.5-inch tracks
Full dimensions and tracks ...

Electrical
Ground	negative
Charging amps	185
Batteries	4
Battery CCA	1000
Battery volts	12

References
Challenger MT800B Series published in 2005, by AGCO

Engine

Engine Detail — 928 ci / 15.2 L Diesel

Manufacturer	Caterpillar C15
Configuration	turbocharged diesel, 6-cylinder 24-valve, liquid-cooled inline
Displacement	928 ci 15.2 L
Bore/Stroke	5.402x6.752 inches 137 x 172 mm
Emissions	Tier III
Power (gross)	400 hp 298.3 kW
Air cleaner	dual paper elements
Compression	16.5:1
Rated RPM	2100
Torque	1423 lb-ft 1929.6 Nm
Torque RPM	1300
Starter volts	12

Transmission

Transmission — Cat Powershift

Transmission	Cat Powershift
Type	full power shift
Gears	16 forward and 4 reverse
Clutch	hydraulic wet disc

Dimensions

Challenger MT845B Tracks
Width	27.5 inches 69 cm
Width	30 inches 76 cm
Width	36 inches 91 cm

Dimensions
Wheelbase	118 inches 299 cm
Length	265.9 inches 675 cm
Width	140.9 inches 357 cm
Height	138.1 inches 350 cm
Ground clearance	14.4 inches 36 cm

Challenger MT845B Weight
Shipping	41000 lbs 18597 kg
Operating	43075 lbs 19538 kg
Max capacity	50000 lbs 22680 kg

Tests

OCED Tractor Test 1861
Diesel 16-speed crawler October 4 - 26, 2005 Link: OCED Tractor Test 1861 file
PTO performance
Max power	402.32 hp 300.0 kW
Fuel use	23.5 gal/hour 88.9 l/hour
Power at rated engine speed	359.53 hp 268.1 kW
Fuel use	23.3 gal/hour 88.2 l/hour
Power at rated PTO speed	387.05 hp 288.6 kW
Fuel use	23.8 gal/hour 90.1 l/hour
Drawbar performance
Max power	313.27 hp 233.6 kW
Fuel use	23.6 gal/hour 89.3 l/hour
Gear 6 used for power test.
Max pull	42532 lbs 19292 kg
Gear 3 used for pull test.

Photos

Challenger MT845B tractor photo