| Manufacturer |
Fiat-Hesston |
| Price |
31,100(USD) |
| Model |
70-90 |
| Equipment Type |
- |
| Factory |
Fiat |
VARIANTS
NEBRASKA TRACTOR TEST 1562 2
| Description |
Diesel 12-speed 2WD April 22 - May 9, 1985 Link: Nebraska Tractor Test 1562 file PTO performance Drawbar performance |
| Power at rated engine speed |
62.25hp / 46.4kW |
| Fuel use |
3.8gal/hour / 14.4l/hour |
| Power at rated PTO speed |
61.94hp / 46.2kW |
| Max power |
53.92hp / 40.2kW |
| Max pull |
6238lbs / 2829kg |
HESSTON 70-90 POWER
| Engine |
70hp / 52.2kW |
| PTO (claimed) |
62hp / 46.2kW |
| Drawbar (tested) |
53.92hp / 40.2kW |
| PTO (tested) |
62.25hp / 46.4kW |
ENGINE DETAIL
The Fiat-Hesston 70-90 tractor is powered by a robust 3.6L four-cylinder diesel engine with direct injection and a 17:1 compression ratio, delivering 70hp at a rated RPM of 2500, which ensures efficient torque and power availability for heavy-duty tasks. Its ether pre-heating system enhances cold starting performance, particularly in low-temperature conditions, making it suitable for various agricultural environments. However, the relatively high displacement might lead to increased fuel consumption, which could be a consideration depending on operational costs and efficiency needs.
| Description |
Fiat 8045.06 diesel 4-cylinder liquid-cooled |
| Displacement |
220.5ci / 3.6L |
| Bore/Stroke |
3.937x4.527inches / 100 x 115mm |
| Power |
70hp / 52.2kW |
| Fuel system |
direct injection |
| Pre-heating |
ether injection |
| Compression |
17:1 |
| Rated RPM |
2500 |
| Starter |
electric |
| Starter volts |
12 |
HESSTON 70-90 ENGINE
The Fiat-Hesston 70-90 tractor features a robust 3.6L 4-cylinder diesel engine that provides adequate power for various agricultural tasks. With a fuel tank capacity of 21.1 gallons, it offers extended operational time between refueling, though users should consider the tractor's fuel efficiency and power distribution for optimal performance. This model is well-suited for mid-sized farming operations, but its weight and dimensions may pose challenges in more compact workspaces or maneuvering tight fields.
| Description |
Fiat 3.6L 4-cyl diesel |
| Fuel tank |
21.1gal / 79.9L |
TRANSMISSIONS OVERVIEW
The Fiat-Hesston 70-90 features a 12-speed synchromesh transmission, allowing smooth gear shifts under load, alongside a 12-speed mechanical shuttle for optimal control in direction changes, ideal for operations like tilling and hauling. The addition of a 20-speed creeper option enables precise low-speed maneuvering, beneficial for tasks requiring high accuracy, such as planting or cultivating in tight spaces. Potential challenges include maintenance complexities of the multi-speed systems and the learning curve for operators to efficiently utilize the full range of speeds.
| Description |
12-speed synchromesh / 12-speed mechanical shuttle / 20-speed creeper |
TRANSMISSION 1
The Fiat-Hesston 70-90 features a synchromesh transmission with 12 forward and 4 reverse gears, enhancing operational versatility and efficiency for varying field conditions. The 279.4mm dry disc clutch ensures reliable power transfer, though it may require careful maintenance to prevent wear under heavy loads. This tractor is well-suited for tasks requiring multiple speed adjustments, such as tilling or plowing, but may pose a challenge for novice operators in mastering gear selection.
| Type |
synchromesh |
| Gears |
12 forward and 4 reverse |
| Clutch |
279.4mm dry disc |
| Description |
Four gears (1-4) in three ranges (I-III) plus reverse range |
TRANSMISSION 2
The Fiat-Hesston 70-90 tractor features a mechanical shuttle transmission, providing seamless forward and reverse shifting for enhanced maneuverability, particularly in tight spaces such as barns or fields with obstacles. With 12 forward and reverse gears, it allows for precise speed control and adaptability in various tasks, from tilling to hauling. However, operators may face a learning curve with the mechanical shuttle compared to hydraulic options, and maintenance of the mechanical system is crucial for optimal performance.
| Type |
mechanical shuttle |
| Gears |
12 forward and reverse |
SPEEDS 2
| Description |
With 18.4-30 rear tires |
TRANSMISSION 3
The Fiat-Hesston 70-90 tractor features a creeper gear type, allowing for precision low-speed operations, ideal for tasks such as tilling or planting in tight spaces. With 20 forward and 8 reverse gears, it offers versatile speed control, enabling efficient maneuverability in various field conditions. However, this complexity may introduce a steeper learning curve for operators unfamiliar with multi-speed gear systems.
| Type |
creeper |
| Gears |
20 forward and 8 reverse |
SPEEDS 3
| Description |
With 18.4-30 rear tires |
MECHANICAL
The Fiat-Hesston 70-90 tractor features a versatile transmission system with options for 12-speed synchromesh, mechanical shuttle, and 20-speed creeper, enhancing both speed control and versatility for various tasks. Its robust 4x2 or 4x4 MFWD chassis provides enhanced traction and stability, particularly in challenging field conditions, while the planetary final drives ensure improved torque efficiency. However, the optional cab may limit usability in certain environments, and the mechanical rear differential lock is advantageous in slippery conditions but may require operator familiarity for effective engagement.
| Chassis |
4x2 2WD/4x4 MFWD 4WD |
| Final drives |
planetary |
| Differential lock |
mechanical rear |
| Steering |
power |
| Brakes |
differential hydraulic wet disc |
| Cab |
Four-post ROPS. Cab optional |
| Transmissions |
12-speed synchromesh / 12-speed mechanical shuttle / 20-speed creeper |
HYDRAULICS
| Type |
open center |
| Pressure |
2702psi / 186.3bar |
| Rear valves |
2 or 3 |
| Pump flow |
11gpm / 41.6lpm |
TRACTOR HITCH
| Rear Type |
II |
| Rear lift |
5212lbs / 2364kg |
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540 (1.375) |
| Engine RPM |
540@2198 |
HESSTON 70-90 TIRES
The Fiat-Hesston 70-90 tractor features a versatile tire configuration allowing for optimal traction and load distribution with options for both 2WD and 4WD systems. The 4WD setup, especially with 12.4-24 Ag front tires, offers enhanced stability and improved performance in uneven terrains compared to the 2WD variant. However, the larger Ag rear tires may increase soil compaction, necessitating careful management in crop-sensitive applications.
| 2WD Ag front |
9.5L-15 |
| 4WD Ag front |
12.4-24 |
| Ag rear |
18.4-30/13.6-38/16.9-30 |
DIMENSIONS
| 2WD Wheelbase |
89.25inches / 226cm |
| 4WD Wheelbase |
89.5inches / 227cm |
| 2WD Length |
135.25inches / 343cm |
| 4WD Length |
140.5inches / 356cm |
| 2WD Front tread |
55.5 to 75.25inches / 140 to 191cm |
| 4WD Front tread |
64.1 to 77inches / 162 to 195cm |
| Rear tread |
55.1 to 78.75inches / 139 to 200cm |
HESSTON 70-90 WEIGHT
| 2WD |
6798lbs/3083 kg |
| 4WD |
7436lbs / 3372kg |
| Operating |
7,100lbs / 3220kg (2WD) |
| Ballasted |
7,775lbs / 3526kg |
HESSTON 70-90 HEIGHT
| 2WD Hood |
58.25inches / 147cm |
| 4WD Hood |
64.5inches / 163cm |
| ROPS |
101.25inches / 257cm |
| Cab |
99.5inches / 252cm |
DIMENSIONS & TIRES
The Fiat-Hesston 70-90 tractor offers a compact wheelbase of 89.25 inches for 2WD and 89.5 inches for 4WD, enhancing maneuverability in tight spaces typical of smaller farms. With a weight range of 6,798 to 7,436 pounds, it provides substantial traction, especially beneficial for plowing and tilling operations in varying soil conditions. Its tire sizes (front: 7.50-16; rear: 16.9-30) support stability and load distribution, although the 2WD configuration may limit performance on steep terrain compared to its 4WD counterpart.
| 2WD Wheelbase |
89.25inches / 226cm |
| 4WD Wheelbase |
89.5inches / 227cm |
| Weight |
6798 to 7436 pounds |
| Front tire |
7.50-16 |
| Rear tire |
16.9-30 |
ELECTRICAL
| Ground |
negative |
| Charging system |
alternator |
| Charging amps |
65 |
| Battery volts |
12 |
