| Manufacturer | Zetor |
| Price | 20,500(USD) |
| Model | 7745 |
| Equipment Type | - |
| Factory | Brno, Czechoslovakia |
NEBRASKA TRACTOR TEST 1602 2
| Description | Diesel 10-speed 4WD September 11 - 30, 1986 Link: Nebraska Tractor Test 1602 file PTO performance Drawbar performance |
| Power at rated engine speed | 65.74hp / 49.0kW |
| Fuel use | 3.7gal/hour / 14.0l/hour |
| Power at rated PTO speed | 62.17hp / 46.4kW |
| Max power | 55.87hp / 41.7kW |
| Max pull | 7,484lbs / 3394kg |
ZETOR 7745 POWER
| Engine | 81hp / 60.4kW |
| Drawbar (claimed) | 58hp / 43.3kW |
| PTO (claimed) | 66hp / 49.2kW 75hp / 55.9kW (turbo) |
| Drawbar (tested) | 55.87hp / 41.7kW |
| PTO (tested) | 65.74hp / 49.0kW |
ENGINE DETAIL 1
The Zetor 7745 tractor features a robust 4-cylinder, 3.9L diesel engine with a compression ratio of 17:1 that provides a peak power output of 73hp at a rated RPM of 2200, optimizing performance in agricultural tasks. With an oil bath air cleaner and a coolant capacity of 14.5 quarts, it maintains efficiently cleaner intake air and effective engine cooling, which contributes to longevity and reduced maintenance. However, potential challenges may arise due to its narrow idle RPM range of 600-2400, necessitating careful consideration of operational conditions to prevent stalling in variable load scenarios.
| Description | Zetor 7701 diesel 4-cylinder liquid-cooled |
| Displacement | 239.3ci / 3.9L |
| Bore/Stroke | 4.02x4.72inches / 102x 120mm |
| Power | 73hp / 54.4kW |
| Air cleaner | oil bath with pre-cleaner |
| Compression | 17:1 |
| Rated RPM | 2200 |
| Idle RPM | 600-2400 |
| Starter | electric |
| Starter volts | 12 |
| Coolant capacity | 14.5qts / 13.7L |
ENGINE DETAIL 2
The Zetor 7745 features a turbocharged 4-cylinder diesel engine with a displacement of 3.9L, delivering 81hp at a rated 2200 RPM. Its oil bath air cleaner with pre-cleaner enhances engine longevity by filtering dirt and debris, making it suitable for rugged agricultural applications. However, the engine's lower RPM rating may result in less torque curve compared to competitors, potentially limiting its performance in high-demand tasks such as plowing or heavy towing.
| Description | Zetor 7701 turbocharged diesel 4-cylinder liquid-cooled |
| Displacement | 239.3ci / 3.9L |
| Bore/Stroke | 4.02x4.72inches / 102x 120mm |
| Power | 81hp / 60.4kW |
| Air cleaner | oil bath with pre-cleaner |
| Rated RPM | 2200 |
ZETOR 7745 ENGINE
The Zetor 7745 is powered by a robust 3.9L 4-cylinder diesel engine, providing reliable torque for various agricultural applications. With an 18.5-gallon (70.0L) fuel tank, it offers extended operational range, making it suitable for longer tasks without frequent refueling. However, operators should consider fuel efficiency and engine load, as heavier attachments may reduce overall performance and increase fuel consumption.
| Description | Zetor 3.9L 4-cyl diesel |
| Fuel tank | 18.5gal / 70.0L |
TRANSMISSION
The Zetor 7745 features a partially synchronized transmission with 10 forward and 2 reverse gears, ensuring smoother shifting in higher speeds. The presence of synchronized fourth and fifth gears enhances operational efficiency, particularly in tasks requiring rapid speed changes. However, the limitation of gear options may challenge adaptability in varied terrain, making it essential to select appropriate gear ranges for optimal performance.
| Type | partially synchronized |
| Gears | 10 forward and 2 reverse |
| Description | Five gears, plus reverse, in high and low ranges. Fourth and fifth gears are synchronized |
MECHANICAL
The Zetor 7745 tractor features a robust 4x4 MFWD system, offering enhanced traction and stability on varying terrains, making it suitable for demanding agricultural tasks. Its power-assisted steering improves maneuverability under load, while the 10-speed partially synchronized transmission allows for efficient speed adjustments, which can optimize performance during fieldwork. However, challenges may arise with the hydraulic dry disc brakes in wet conditions, as they may reduce stopping efficiency, necessitating careful operation in slippery environments.
| Chassis | 4x4 MFWD 4WD |
| Steering | power assist |
| Brakes | differential hydraulic dry disc |
| Transmission | 10-speed partially synchronized |
HYDRAULICS
| Type | open center |
| Pressure | 2,321psi / 160.0bar |
| Valves | 2 |
| Total flow | 7.9gpm / 29.9lpm |
TRACTOR HITCH
| Rear Type | II/I |
| Rear lift | 5300lbs / 2404kg |
| Front Hitch | II |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540/1000 |
| Front RPM | 1000 |
ZETOR 7745 TIRES
The Zetor 7745 features standard agricultural tires that provide a balance between traction and flotation, with front tires measuring 11.2-24 and rear tires at 16.9-28, optimizing performance for various field conditions. Optional tire sizes, including the larger 16.9-30 and wider configurations like 12.4-36, allow for customizations to enhance stability, load capacity, and soil impact depending on specific agricultural tasks. The choice of tire size should consider terrain type and operational requirements to ensure optimal power transfer and minimize soil compaction.
| Standard tires (ag) | Front: 11.2-24. Rear: 16.9-28 |
| Optional tires (ag) | Front: 11.2-24. Rear: 16.9-30 Front: 11.2-24. Rear: 12.4-36 Front: 12.4-24. Rear: 13.6-36 Front: 12.4-24. Rear: 16.9-34 |
DIMENSIONS
| Wheelbase | 87.5inches / 222cm |
| Length | 149.6inches / 379cm |
| Width | 78inches / 198cm |
| Height (cab) | 104.3inches / 264cm |
| Height (exhaust) | 107.9inches / 274cm |
| Weight | 7900lbs / 3583kg |
| Ground clearance | 15inches / 38cm |
DIMENSIONS & TIRES
The Zetor 7745 tractor features a relatively compact wheelbase of 87.5 inches (222 cm), enhancing maneuverability in tight spaces, making it suitable for diverse agricultural tasks. Weighing 7900 lbs (3583 kg) with front tires sized at 11.2-24 and rear tires at 16.9-28, it offers good stability and traction on various terrains, although weight distribution may affect performance in very soft ground conditions. Optimal for tasks like plowing and hauling, the Zetor 7745 excels in mid-sized farming operations, but operators should be cautious of potential rutting in wet fields due to its weight.
| Wheelbase | 87.5inches / 222cm |
| Weight | 7900lbs / 3583kg |
| Front tire | 11.2-24 |
| Rear tire | 16.9-28 |
7745 SERIAL NUMBERS
| Location | Serial number plate on the right side of the dashboard |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 55 |
| Battery volts | 12 |