| Manufacturer |
Hesston |
| Price |
31,100(USD) |
| Model |
70-90 |
| Equipment Type |
Utility Tractors |
| Factory |
|
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 |
62.25 hp/46.4 kW |
| Fuel use |
3.8 gal/hour/14.4 l/hour |
| Power at rated PTO speed |
61.94 hp/46.2 kW |
| Max power |
53.92 hp/40.2 kW |
| Max pull |
6238 lbs/2829 kg |
HESSTON 70-90 POWER
| Engine |
70 hp/52.2 kW |
| PTO (claimed) |
62 hp/46.2 kW |
| Drawbar (tested) |
53.92 hp/40.2 kW |
| PTO (tested) |
62.25 hp/46.4 kW |
ENGINE DETAIL
The Hesston 70-90 tractor features a robust Fiat 8045.06 diesel engine with a displacement of 3.6 L, producing 70 hp at a rated 2500 RPM, making it suitable for moderate agricultural tasks. Its direct injection fuel system and ether pre-heating enhance cold-start performance, especially in low-temperature conditions, while the 17:1 compression ratio provides efficient combustion and torque. However, the electric starter operating at 12 volts may pose challenges in extreme cold without adequate battery maintenance, making power management essential in demanding environments.
| Description |
Fiat 8045.06/diesel/4-cylinder/liquid-cooled |
| Displacement |
220.5 ci/3.6 L |
| Bore/Stroke |
3.937x4.527 inches/100 x 115 mm |
| Power |
70 hp/52.2 kW |
| Fuel system |
direct injection |
| Pre-heating |
ether injection |
| Compression |
17:1 |
| Rated RPM |
2500 |
| Starter |
electric |
| Starter volts |
12 |
HESSTON 70-90 ENGINE
The Hesston 70-90 features a Fiat 3.6L 4-cylinder diesel engine, known for its efficiency and moderate power output, making it suitable for agricultural tasks requiring reliability and fuel economy. With a 21.1-gallon (79.9 L) fuel tank, it provides reasonable operational range for extensive field work, although fuel management may become crucial for prolonged uses or remote operations. Potential challenges include engine maintenance compatibility, given Fiat's unique specifications, which could affect parts availability depending on location.
| Description |
Fiat 3.6L 4-cyl diesel |
| Fuel tank |
21.1 gal/79.9 L |
TRANSMISSIONS OVERVIEW
The Hesston 70-90 tractor features a versatile 12-speed synchromesh transmission, offering smooth shifting for variable field applications, alongside a 12-speed mechanical shuttle for efficient direction changes. The additional 20-speed creeper gear enhances low-speed control, making it ideal for precision tasks such as planting or tilling in tight spaces. However, operators may need to adapt to its complexity compared to simpler transmission systems.
| Description |
12-speed synchromesh/12-speed mechanical shuttle/20-speed creeper |
TRANSMISSION 1
The Hesston 70-90 tractor features a synchromesh transmission, providing smooth gear shifts across 12 forward and 4 reverse gears, which enhances operational efficiency and ease of use in varied terrain. The 279.4mm dry disc clutch improves reliability and requires less maintenance compared to wet clutches, although it may present challenges in very wet conditions. This transmission setup is ideal for applications requiring precise control, such as tillage or mowing, but operators may need to adapt to the multi-range shifting for optimal performance.
| 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 Hesston 70-90 tractor features a mechanical shuttle transmission with 12 forward and reverse gears, providing versatility for various field applications and easy direction changes. This configuration enhances operator control, especially in tight spaces or during implements engagement. However, mechanical shuttles may require more physical effort compared to hydraulic systems, potentially impacting operator fatigue during extended use.
| Type |
mechanical shuttle |
| Gears |
12 forward and reverse |
SPEEDS 2
| Description |
With 18.4-30 rear tires./ |
TRANSMISSION 3
The Hesston 70-90 tractor features a creeper transmission, allowing for precise control at low speeds, ideal for tasks such as tilling or row crop work. With 20 forward and 8 reverse gears, it offers exceptional versatility in navigating varied terrain and executing detailed operations. However, operators should be aware of the potential for increased complexity in gear shifts, which may require more operator skill and attention during fieldwork.
| Type |
creeper |
| Gears |
20 forward and 8 reverse |
SPEEDS 3
| Description |
With 18.4-30 rear tires./ |
MECHANICAL
The Hesston 70-90 tractor features versatile 2WD or 4WD configurations, enhancing traction and maneuverability for various agricultural tasks. Its planetary final drives ensure durability and efficient power transfer, while the mechanical rear differential lock enhances traction in challenging terrains. The availability of multiple transmission options, including a 20-speed creeper, allows for precise speed control in both fieldwork and transport scenarios, making it suitable for diverse farming operations.
| 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 |
2702 psi/186.3 bar |
| Rear valves |
2 or 3 |
| Pump flow |
11 gpm/41.6 lpm |
TRACTOR HITCH
| Rear Type |
II |
| Rear lift |
5212 lbs/2364 kg |
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540 (1.375) |
| Engine RPM |
540@2198 |
HESSTON 70-90 TIRES
The Hesston 70-90 tractor can be equipped with either 2WD or 4WD configurations, beneficial for varied traction needs; the 2WD option with Ag front tires (9.5L-15) suits lighter operations, while the 4WD (12.4-24) excels in challenging terrains. With multiple rear tire options (18.4-30, 13.6-38, 16.9-30), it allows for customization based on load capacity and soil conditions, enhancing operational versatility. However, the 4WD setup may increase maintenance complexity and upfront costs, which should be considered against the potential for improved stability and traction in adverse conditions.
| 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 |
89.25 inches/226 cm |
| 4WD Wheelbase |
89.5 inches/227 cm |
| 2WD Length |
135.25 inches/343 cm |
| 4WD Length |
140.5 inches/356 cm |
| 2WD Front tread |
55.5 to 75.25 inches/140 to 191 cm |
| 4WD Front tread |
64.1 to 77 inches/162 to 195 cm |
| Rear tread |
55.1 to 78.75 inches/139 to 200 cm |
HESSTON 70-90 WEIGHT
| 2WD |
6798 lbs/3083 kg |
| 4WD |
7436 lbs/3372 kg |
| Operating |
7,100 lbs/3220 kg (2WD) |
| Ballasted |
7,775 lbs/3526 kg |
HESSTON 70-90 HEIGHT
| 2WD Hood |
58.25 inches/147 cm |
| 4WD Hood |
64.5 inches/163 cm |
| ROPS |
101.25 inches/257 cm |
| Cab |
99.5 inches/252 cm |
DIMENSIONS & TIRES
The Hesston 70-90 tractor features a compact wheelbase, with a slight difference between 2WD (89.25 inches) and 4WD (89.5 inches), enhancing maneuverability in tight spaces. Weighing between 6,798 to 7,436 pounds, this tractor provides substantial stability, although the weight may impact transportability. The front tire size of 7.50-16 paired with rear tires of 16.9-30 offers a good balance for traction and load-carrying capacity, making it suitable for specific agricultural applications, but requiring careful selection for ground conditions to prevent soil compaction.
| 2WD Wheelbase |
89.25 inches/226 cm |
| 4WD Wheelbase |
89.5 inches/227 cm |
| 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 |
