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Challenger MT655 Specs ( 2002-2003 )

Name: Challenger MT655
Brand: Challenger

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Nebraska Test #OECD 1770

Challenger MT 655

Max Drawbar HP 175.7 hp

Max Pull 20,765 lbs

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Overview

The Challenger MT655 is a farm-type row-crop tractor manufactured by AGCO in Beauvais, France, during the 2002-2003 production period. It features a Sisu 8.4L 6-cylinder turbocharged aftercooled diesel engine paired with an 18-speed power shift transmission and a closed-center pressure flow compensated hydraulic system.

Ideal Applications

High-Capacity Rear Lift and Towing: Equipped with a Category III rear hitch rated for 19,700 lbs of lift and a tested maximum drawbar pull of 20,765 lbs.

Tested PTO and Engine Performance: In official OCED testing, the Sisu 8.4L engine reached a maximum PTO output of 216.7 hp and a power rating of 205.4 hp at the rated engine speed of 2200 RPM.

Mechanical and Transmission Configuration: This four-wheel drive model utilizes an 18 forward and 6 reverse gear power shift transmission with an electro-hydraulic wet disc clutch and hydraulic wet disc brakes.

Production

Description	Row-Crop tractor / Built in Beauvais, France / The Challenger MT655 is similar to the Massey Ferguson 8270.
Manufacturer	Challenger (a part of AGCO)

Engine

Engine type	Sisu 8.4L 6-cyl diesel
Fuel tank	120 gal (454.2 L)
Air cleaner	dual paper elements
Bore/Stroke	4.370x5.709 inches (111 x 145 mm)
Compression	16.5:1
Description	Sisu / turbocharged aftercooled diesel / 6-cylinder / liquid-cooled vertical
Displacement	513 ci (8.4 L)
Rated RPM	2200
Starter volts	12
Drawbar (tested)	165.1 hp (123.1 kW)
PTO (claimed)	200 hp (149.1 kW)
PTO (tested)	216.7 hp (161.6 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)	19700 lbs (8935 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	600/70R28
Ag rear	650/85R38
Height (cab)	121 inches (307 cm)
Length	203 inches (515 cm)
Shipping weight	21500 lbs (9752 kg)
Wheelbase	121 inches (307 cm)
Width	98.2 inches*Minimum width (249 cm)
Front tire	600/70R28
Rear tire	650/85R38
Weight	21500 lbs (9752 kg)
Wheelbase	121 inches (307 cm)

OCED Tractor Test 1770

Description	Diesel 18-speed 4WDApril 1998 - May 1998, Link: OCED Tractor Test 1770 file / PTO performance / Drawbar performance / Gear 10 used for power test. / Gear 6 used for pull test.
Fuel use	12.4 gal/hour (46.9 l/hour) / 13.1 gal/hour (49.6 l/hour) / 12.9 gal/hour (48.8 l/hour) / 13.2 gal/hour (50.0 l/hour)
Max power	216.7 hp (161.6 kW) / 165.1 hp (123.1 kW)
Max pull	20765 lbs (9419 kg)
Power at rated engine speed	205.4 hp (153.2 kW)
Power at rated PTO speed	212.3 hp (158.3 kW)

References

Description	Challenger MT500/MT600 published in 2002, by AGCO

Nebraska Tractor Test Results

Test #OECD 1770

Download PDF

Test Date: April - May, 1998

Location: DLG Testing station for Agricultural Equipment, Max - Eyth - Weg 1, D-64823 Gros-Umstadt, Germany

This section is compiled from original Nebraska Tractor Test PDFs using AI-assisted extraction and human review. For full verification, download the source PDF above. Differences between reports, incomplete source data, and occasional extraction or data entry mistakes can occur.

PTO Drawbar Hydraulics Technical Sound Tires & Weight

Maximum Power & Fuel Consumption

Rated Engine Speed

205.40 hp

N/A lb/hp·hr

Standard PTO Speed

212.30 hp

@ 1001 rpm PTO

Torque Statistics

Maximum Torque	710 lb-ft (963 Nm)
Torque Rise	45.0%
At Engine RPM	1400 rpm

PTO Power Curve

Maximum Power & Fuel Consumption Details

Condition	HP	kW	RPM	PTO RPM	Fuel gal/hr	Fuel L/hr
Rated Engine Speed	205.40	153.20	2200		13.09	49.56
Standard PTO Speed (1000 rpm)	212.30	158.30	2093	1001	12.89	48.78

Varying Power & Fuel Consumption

Click column headers to sort

Power	RPM	gal/hr	lb/hp·hr	hp·hr/gal	DEF gal/hr
205.40	2200	13.09	0.44	15.68	N/A
177.60	2237	11.74	0.46	15.13	N/A
134.80	2264	9.66	0.50	13.96	N/A
90.80	2285	7.51	0.57	12.09	N/A
45.90	2310	5.44	0.82	8.44	N/A
N/A	2337	3.54	N/A	N/A	N/A

Fuel Consumption Characteristics

Click column headers to sort

Condition	Power	Pull (lbs)	Speed	Slip
Maximum Power - 10th Gear	165.10	10,500	5.90	3.10
75% of Pull at Maximum Power - 10th Gear	127.90	7,895	6.08	2.10
50% of Pull at Maximum Power - 10th Gear	86.80	5,255	6.20	1.50
75% of Pull at Reduced Engine Speed - 11...	127.70	7,860	6.09	2.40
50% of Pull at Reduced Engine Speed - 11...	87.40	5,250	6.24	1.60

Maximum Power In Selected Gears

Click column headers to sort

Gear	Power	Pull (lbs)	Speed	Slip	Barometer Inch Hg	Engine RPM	Fuel Hp Hr Gal	Fuel Lb Hp Hr	Temp Air F	Temp Coolant F
6th	159.30	20,765	2.88	11.30	28.60	1954	12.69	0.55	70	183
7th	167.90	18,980	3.32	7.70	28.60	1902	13.60	0.51	72	187
8th	168.20	16,320	3.86	5.50	28.60	1902	13.55	0.51	68	180
9th	173.80	14,790	4.41	4.90	28.60	1903	13.96	0.50	77	176
10th	175.70	13,055	5.05	4.10	28.60	1901	14.11	0.49	82	174
11th	170.70	11,105	5.76	3.50	29.60	1897	13.81	0.50	81	183
12th	173.80	9,845	6.62	3.00	29.60	1900	14.06	0.49	75	181
13th	173.10	8,655	7.50	2.40	29.60	1896	13.96	0.50	81	174
14th	168.30	7,345	8.59	2.40	29.60	1903	13.62	0.51	81	180

Engine

Make	Sisu/Valmet Diesel
Type	six cylinder vertical with turbocharger and intercooler
Displacement	513 cu in (8419 ml)
Compression Ratio	16.5 to 1
Rated Engine Speed	2200 rpm
Air Cleaner	two paper elements and aspirator
Crankshaft	lengthwise

Chassis

Type	front wheel assist
Steering	hydrostatic
Transmission	selective gear fixed ratio with full range operator controlled powershift
Speeds	18 forward (24.71 mph max)
Wheelbase	121.10 in (3075 mm)
Front Tread Width	66.4 to 81.1 in
Rear Tread Width	62.5 to 77.2 in
Brakes	multiple wet disc hydraulically operated by two foot pedals that can be locked together
Hydraulic Control	direct engine drive
Unladen Tractor Mass	9,795 kg

Sound Levels

At No Load In 8th Gear	76.00 dB(A)

Tires & Tracks

Rear Tires	**, 650/85R38
Front Tires	**, 600/70R28
Height of Drawbar	23.60 in (600 mm)

Static Weight

Rear	12,875 lbs
Front	8,885 lbs
Total	21,760 lbs

Challenger MT655 Specs ( 2002-2003 )

Overview

Ideal Applications

Production

Engine

Transmission

Mechanical

Hydraulics

Hitch

PTO

Electrical

Dimensions & Tires

OCED Tractor Test 1770

References

Nebraska Tractor Test Results

PTO Performance

Maximum Power & Fuel Consumption

Torque Statistics

PTO Power Curve

Maximum Power & Fuel Consumption Details

Varying Power & Fuel Consumption

Drawbar Performance

Fuel Consumption Characteristics

Maximum Power In Selected Gears

Hydraulic Performance

Technical Specifications

Engine

Chassis

Sound Levels

Sound Levels

Tires & Weight

Tires & Tracks

Static Weight

Test Remarks