Challenger MT855B

The Challenger MT855B is a tractor produced by Challenger. It is equipped with a 928 ci 15.2 L engine. The rated power output is 460 hp 343.0 kW. Transmission: Cat Powershift. Drive type: crawler. Operating weight: 41000 lbs 18597 kg.

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 MT855B Engine
Caterpillar 15.2L 6-cyl diesel
Fuel tank	305 gal 1154.4 L
	330 galOptOptional 1249.0 L
Engine details ...

Challenger MT855B Transmission
16-speed full power shift
Transmission details ...

Challenger MT855B Power
Engine (gross)	460 hp 343.0 kW
PTO (claimed)	385 hp 287.1 kW
Drawbar (tested)	358.14 hp 267.1 kW
PTO (tested)	465.26 hp 346.9 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	19,500 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 lbs 18597 kg
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)	460 hp 343.0 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

Dimensions

Challenger MT855B 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
Shipping weight	41000 lbs 18597 kg
Max weight	50000 lbs 22680 kg
Ground clearance	14.4 inches 36 cm

Tests

OCED Tractor Test 1862
Diesel 16-speed crawler October 6 - 21, 2005 Link: OCED Tractor Test 1862 file
PTO performance
Max power	465.26 hp 346.9 kW
Fuel use	25.3 gal/hour 95.8 l/hour
Power at rated engine speed	412.25 hp 307.4 kW
Fuel use	24.5 gal/hour 92.7 l/hour
Power at rated PTO speed	444.14 hp 331.2 kW
Fuel use	25.6 gal/hour 96.9 l/hour
Drawbar performance
Max power	358.14 hp 267.1 kW
Fuel use	23.9 gal/hour 90.5 l/hour
Gear 6 used for power test.
Max pull	41964 lbs 19034 kg
Gear 3 used for pull test.

Photos

Challenger MT855B tractor photo