Fiat-Hesston 55-66 tractor specifications

1985 - 1989

1985 - 1989 66 SeriesUtility tractor

Series:

Series:55-66 → 60-66

1985 - 1991

66 Series

Utility tractor

Fiat built

Series:

55-66 ←

60-66

→ 70-66

Production

Production
Distributor:	Hesston
Manufacturer:	Fiat
Type:	Utility tractor

Variants

Variants
60-66:	utility 2WD
60-66DT:	utility 4WD
60-66OR:	orchard 2WD
60-66ORDT:	orchard 4WD

Hesston 60-66 Power

Hesston 60-66 Power
Engine:	60 hp 44.7 kW
Drawbar (claimed):	45 hp 33.6 kW
PTO (claimed):	51 hp 38.0 kW
Drawbar (tested):	44.89 hp 33.5 kW
PTO (tested):	51.49 hp 38.4 kW
power test details ...

Hesston 60-66 Engine

Hesston 60-66 Engine
Fiat 2.9L 3-cyl diesel
Fuel tank:	19.2 gal 72.7 L
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
	4x4 MFWD 4WD
Steering:	power
Brakes:	differential mechanical wet disc
Cab:	Four-post ROPS. Canopy optional.
Transmissions:	12-speed partially synchronized
	12-speed mechanical shuttle
	20-speed creeper
Transmission details ...

Hydraulics

Hydraulics
Type:	open center
Pressure:	2700 psi 186.2 bar
Valves:	1 to 3
Total flow:	11 gpm 41.6 lpm

Tractor hitch

Tractor hitch
Rear Type:	I/II
Control:	position and lower-link draft control
Rear lift:	3920 lbs 1778 kg

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	independent
Rear RPM:	540/ground

Dimensions & Tires

Dimensions & Tires
2WD Wheelbase:	85.6 inches 217 cm
4WD Wheelbase:	83.4 inches 211 cm
Weight:	4901 to 5700 pounds
Front tire:	7.50-16
2WD Rear tire:	14.9-28
Full dimensions and tires ...

Hesston 60-66 attachments

Hesston 60-66 attachments
front-end loader
Attachment details ...

Electrical

Electrical
Charging system:	alternator
Charging amps:	33
Battery volts:	12

Production

Production Manufacturer:Hesston (a part of Fiat)
Type:Utility tractor
Original price:$17,400 (1990 )

Variants

Variants 55-66:utility 2WD
55-66DT:utility 4WD

Hesston 55-66 Power

Hesston 55-66 Power Engine:55 hp
41.0 kW
Drawbar (claimed):38 hp
28.3 kW
PTO (claimed):45.8 hp
34.2 kW
Drawbar (tested):38.39 hp
28.6 kW
PTO (tested):45.78 hp
34.1 kW
power test details ...

1985 - 1989

66 Series

Utility tractor

Series:

55-66

→ 60-66

Nebraska Tractor Test 1560

Nebraska Tractor Test 1560
Diesel 12-speed 2WD April 15 - 29, 1985 Link: Nebraska Tractor Test 1560 file
PTO performance
Power at rated engine speed:	45.78 hp 34.1 kW
Fuel use:	3.0 gal/hour 11.4 l/hour
Power at rated PTO speed:	44.84 hp 33.4 kW
Fuel use:	2.7 gal/hour 10.2 l/hour
Drawbar performance
Max power:	38.39 hp 28.6 kW
Fuel use:	3.0 gal/hour 11.4 l/hour

Hesston 55-66 Engine

Hesston 55-66 Engine Fiat 2.7L 3-cyl diesel Fuel tank:19.2 gal
72.7 L
Engine details ...

1985 - 1989

66 Series

Utility tractor

Series:

55-66

→ 60-66

Engine Detail

Engine Detail
Fiat 8035.06
diesel
3-cylinder
liquid-cooled
Displacement:	165 ci 2.7 L
Bore/Stroke:	3.937x4.528 inches 100 x 115 mm
Power:	55 hp 41.0 kW
Compression:	17:1
Rated RPM:	2500
Starter:	electric
Starter volts:	12

Mechanical

Mechanical Chassis:4x2 2WD
4x4 MFWD 4WD
Steering:power
Brakes:mechanical wet disc
Cab:Four-post ROPS. Canopy optional.
Transmissions:12-speed partially synchronized
12-speed mechanical shuttle
20-speed creeper
Transmission details ...

1985 - 1989

66 Series

Utility tractor

Series:

55-66

→ 60-66

Transmissions overview

Transmissions overview
12-speed partially synchronized
12-speed mechanical shuttle
20-speed creeper

Transmission

Transmission
Type:	partially synchronized
Gears:	12 forward and 4 reverse
Four gears (1-4) in three ranges (I-III). Shifts between gears are synchronized.

Speeds

Speeds
With 16.9-28 rear tires.

Transmission

Transmission
Type:	mechanical shuttle
Gears:	12 forward and reverse
Four gears (1-4) in three ranges (I-III) with shuttle.

Speeds

Speeds
With 16.9-28 rear tires.

Transmission

Transmission
Type:	creeper
Gears:	20 forward and 8 reverse
Four gears (1-4) in three ranges (I-III) with normal and creeper ranges.

Speeds

Speeds

Hydraulics

Hydraulics Type:open center
Pressure:2700 psi
186.2 bar
Valves:0 to 3
Total flow:11 gpm
41.6 lpm

Tractor hitch

Tractor hitch Rear Type:I/II
Control:position and lower-link draft control
Rear lift:3920 lbs
1778 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:independent
Rear RPM:540/ground

Dimensions & Tires

Dimensions & Tires 2WD Wheelbase:85.6 inches
217 cm
4WD Wheelbase:83.4 inches
211 cm
Weight:4851 to 5402 pounds
Front tire:6.50-16
2WD Rear tire:13.6-28
Full dimensions and tires ...

1985 - 1989

66 Series

Utility tractor

Series:

55-66

→ 60-66

Hesston 55-66 Tires

Hesston 55-66 Tires
2WD Standard tires (ag):	Front: 6.50-16. Rear: 13.6-28
4WD Standard tires (ag):	Front: 9.5-24. Rear: 16.9-28

Dimensions

Dimensions
2WD Wheelbase:	85.6 inches 217 cm
4WD Wheelbase:	83.4 inches 211 cm
2WD Length:	130 inches 330 cm
4WD Length:	133 inches 337 cm
2WD Clearance (front axle):	18.5 inches 46 cm
4WD Clearance (front axle):	14.5 inches 36 cm
2WD Front tread:	55.1 to 74.75 inches 139 to 189 cm
4WD Front tread:	56.9 to 73.75 inches 144 to 187 cm
Rear tread:	52.1 to 75.75 inches 132 to 192 cm