Fiat 55-46 Tractor

Manufacturer Fiat
Price -
Model 55-46
Equipment Type Utility Tractors
Factory

VARIANTS

55-46DT 4WD

FIAT 55-46 POWER

Engine 54.2hp / 40.4kW

ENGINE DETAIL

The Fiat 55-46 features a compact 2.7L 3-cylinder diesel engine with a relatively high compression ratio of 17:1, delivering 54.2 hp at 2500 RPM, ideal for efficient fuel consumption and moderate power output for agricultural tasks. Its bore and stroke configuration (100x115 mm) suggests a focus on torque production, making it suitable for plowing and heavy-duty fieldwork; however, the limited power may challenge performance in demanding applications. The 12V electric starter enhances reliability for quick ignition, crucial in varying operational conditions.

Description Fiat 8035.06 diesel 3-cylinder liquid-cooled
Displacement 165ci / 2.7L
Bore/Stroke 3.937x4.528inches / 100 x 115mm
Power 54.2hp / 40.4kW
Compression 17:1
Rated RPM 2500
Firing order 1-2-3
Starter electric
Starter volts 12

FIAT 55-46 ENGINE

The Fiat 55-46 tractor features a 2.7L, 3-cylinder diesel engine which provides a good balance of power and fuel efficiency, making it suitable for small to medium agricultural tasks. Key advantages include compact size for maneuverability and lower operating costs due to its efficient engine design. However, its smaller displacement may limit performance in heavy-duty applications, making it less ideal for larger farms requiring high horsepower tractors.

Description Fiat 2.7L 3-cyl diesel

TRANSMISSIONS OVERVIEW

The Fiat 55-46 tractor features an 8-speed partially synchronized transmission, allowing for smoother shifting during operation, which can enhance operator comfort in various field conditions. The inclusion of a 12-speed creeper gear offers precise speed control for applications that require low-speed operation, such as plowing or tilling in tight spaces. However, the complexity of the transmission could pose a challenge in maintenance; thus, regular servicing is essential for optimal performance.

Description 8-speed partially synchronized / 12-speed creeper

TRANSMISSION 1

The Fiat 55-46 tractor features a partially synchronized transmission with 8 forward and 2 reverse gears, enhancing versatility in various field conditions. The 279.4mm dry disc clutch offers reliable engagement but may require frequent adjustment under heavy use. This setup is ideal for applications needing precise speed management, although the synchronization limitation may affect smoother gear transitions in certain scenarios.

Type partially synchronized
Gears 8 forward and 2 reverse
Clutch 279.4mm dry disc
Description Four gears with high and low ranges provide eight forward speeds Gears 3/4 are synchronized in both ranges

SPEEDS 1

Description With 14.9/13-28 rear tires

TRANSMISSION 2

The Fiat 55-46 tractor, equipped with a creeper transmission, offers enhanced low-speed control, making it ideal for tasks requiring precision such as tillage or planting. With 12 forward and 3 reverse gears, it provides versatility across various terrains and speeds, although the relatively limited reverse gears may affect maneuverability in tight spaces. The combination of these features makes it particularly advantageous for specialized agricultural operations, but operators should be mindful of potential challenges in navigating confined areas.

Type creeper
Gears 12 forward and 3 reverse

SPEEDS 2

Description With 14.9/13-28 rear tires

MECHANICAL

The Fiat 55-46 tractor features a robust chassis available in either 2WD or MFWD configurations, providing flexibility for various terrain conditions; the 4x4 system enhances traction in challenging environments. The power steering improves maneuverability, while the mechanical band brakes might require more maintenance and can lead to less responsive braking compared to hydraulic options. With an 8-speed partially synchronized or a 12-speed creeper transmission, operators can optimize speed for diverse agricultural tasks, though the latter may result in reduced operational speed range in standard conditions.

Chassis 4x2 2WD/4x4 MFWD 4WD
Steering power
Brakes mechanical band
Cab Four-post ROPS. Cab available with heater
Transmissions 8-speed partially synchronized / 12-speed creeper

HYDRAULICS

Type open center
Pressure 2756psi / 190.0bar
Valves 0 to 2
Pump flow 7gpm / 26.5lpm

TRACTOR HITCH

Rear Type II/I
Rear lift (at ends) 4233lbs / 1920kg
Rear lift (at 24 3483lbs / 1579kg

POWER TAKE-OFF (PTO)

Rear PTO independent
Rear RPM 540 (1.375)
Engine RPM 540@2160

FIAT 55-46 TIRES

The Fiat 55-46 tractor offers versatile tire sizing for both 2WD and 4WD configurations, allowing adaptation to various agricultural conditions. The standard 4WD tires (11.2/10-20 front and 14.9/13-28 rear) enhance traction, while the optional 4WD tire size (12.4/11-32 rear) may improve stability on diverse terrain. However, the heavier rear tires could challenge maneuverability in tighter spaces, making the choice of tire configuration crucial based on specific operational scenarios.

2WD Standard tires (ag) Front: 6.00-16. Rear: 14.9/13-28
4WD Standard tires (ag) Front: 11.2/10-20. Rear: 14.9/13-28
2WD Optional tires (ag) Front: 7.50-16. Rear: 12.4/11-32
4WD Optional tires (ag) Front: 11.2/10-20. Rear: 12.4/11-32

DIMENSIONS

2WD Wheelbase 80.8inches / 205cm
4WD Wheelbase 79.2inches / 201cm
2WD Length 126inches / 320cm
4WD Length 128.9inches / 327cm
2WD Ground clearance 19.5inches / 49cm
4WD Ground clearance 12.6inches / 32cm

FIAT 55-46 WEIGHT

2WD 4431lbs / 2009kg
4WD 4894lbs / 2219kg
2WD Ballasted 6063lbs / 2750kg
4WD Ballasted 6526lbs / 2960kg

FIAT 55-46 HEIGHT

2WD Hood 56.1inches / 142cm
4WD Hood 55.9inches / 141cm
ROPS 90.2inches / 229cm
Exhaust 92.7inches / 235cm

DIMENSIONS & TIRES

The Fiat 55-46 tractor, available in both 2WD and 4WD configurations, features a substantial wheelbase that enhances stability for various field applications, with 2WD at 80.8 inches and 4WD at 79.2 inches. Weighing between 4,431 and 4,894 pounds, it benefits from a balanced center of gravity, improving traction, especially with rear tire dimensions of 14.9/13-28. However, the 2WD version may present challenges in slippery conditions compared to the 4WD, making the choice between configurations critical based on terrain type.

2WD Wheelbase 80.8inches / 205cm
4WD Wheelbase 79.2inches / 201cm
Weight 4431 to 4894 pounds
Front tire 6.00-16
2WD Rear tire 14.9/13-28

55-46 SERIAL NUMBERS

Location Serial number on the left side of the 55-46, behind the rear axle

ELECTRICAL

Ground negative
Charging system alternator
Charging amps 33
Battery volts 12


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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