T-74 (tractor)
| ХТЗ | |
|---|---|
A T-74 in a Russian museum, radiator emblem and side panel not original (2008) |
|
| T-74 | |
| Manufacturer: | Kharkovsky Traktorny Zavod |
| Sales designation: | Т-74 |
| Production period: | 1962-1984 |
| Engines: | Four cylinder diesel engine |
| Traction: | about 30 kN |
| Length: | up to 4225 mm |
| Width: | 1845 mm |
| Height: | 2325 mm |
| Wheelbase: | 1622 mm |
| Gauge: | 1435 mm |
| Ground clearance: | 280 mm |
| Standard tires: | Caterpillars |
| Top speed: | 11.60 km / h |
| Empty weight: | 5400-5860 kg |
| Previous model: | DT-54 |
| Successor: | T-150 |
The T-74 ( Russian Т-74 ) is a Soviet chain tractor that was manufactured in the Charkowski Traktorny Sawod (short ХТЗ or ChTS) from 1962 . In just under 22 years of construction, around 880,000 copies of the vehicle were produced, which replaced the very similar predecessor DT-54 .
Vehicle history
As early as 1959, the Charkow tractor factory began manufacturing a new chain tractor . Outwardly, the vehicle with the designation T-75 hardly differed from the previously manufactured DT-54. However, a different engine with an output of 75 hp (55 kW) was installed. By 1962 45,800 T-75 chain tractors rolled off the assembly line in Kharkov , after which production was discontinued.
Production of the T-74 then began in April 1962. This tractor also has a diesel engine with 75 HP, but a different make was probably installed. The water-cooled four-cylinder diesel engine has a displacement of 6330 cm³ and is started by means of a single-cylinder Otto engine . An electric starter was installed to start it. A manual six-speed gearbox with reverse and crawler gears served as the gearbox, although gearboxes with nine forward gears and three reverse gears were possibly also used.
In November 1983, serial production of the T-150 , the track version of the well-known T-150K wheeled tractor, began in Kharkov . Accordingly, production of the T-74 was discontinued in 1984. By then, 880,700 tractors of this type had left the factory, not including the almost 46,000 T-75s from 1959 to 1962.
In the course of the production history, different model variants of the tractor were built, which mainly differed in the hydraulic system . The numbering was done according to the scheme T-74-S1 to -S4, there was also a version -S9. The T-74-S3 was delivered without any hydraulics, the four other versions differed in the number and use of the working cylinders.
Technical specifications
The following data refer to the T-74 model.
engine
- Engine: four-cylinder four-stroke diesel engine
- Motor type: SM-14A
- Cooling system: water cooling
- Power: 75 HP (55 kW) at 1700 min -1
- Displacement: 6.33 l
- Bore: 120 mm
- Stroke: 140 mm
- specific fuel consumption : 195 g / PSh
- Tank capacity: 218 l
- Permissible oil consumption: maximum 3% of fuel consumption
- Firing order: 1-3-2-4
- Compression: 17: 1
- Direction of rotation of the crankshaft, viewed from the front: right
- Idle speed: maximum 600 min −1
- maximum speed: 1830 min −1
- Starter: Single cylinder gasoline engine of type PD-10M-2 with electric starter
- Engine weight: 675 kg
transmission
- Transmission type: manual transmission with six forward and one reverse gears as well as crawler gear (other types also installed)
- Maximum speeds:
- Creep speed: 2.53 km / h
- 1st gear: 4.51 km / h
- 2nd gear: 5.32 km / h
- 3rd gear: 6.53 km / h
- 4th gear: 8.01 km / h
- 5th gear: 9.46 km / h
- 6th gear: 11.60 km / h
- Reverse gear: 5.65 km / h
- Tensile force : maximum 29.4 kN
- equipped with hydraulic system (some models)
Dimensions and weights
- Length: 3825-4225 mm
- Width: 1845 mm
- Height: 2325 mm
- Ground clearance: 280 mm
- Track width: 1435 mm
- Wheelbase between the sprockets: 1622 mm
- Weight: depending on the modification, 5400-5860 kg
- specific ground pressure : 0.42 kg / cm²
Individual evidence
- ↑ a b c d For the T-75 and T-74 including manufacturer information and production figures (Russian)
- ↑ a b History of ChTS on their website (Russian)
- ↑ a b c Comprehensive collection of technical data on all areas of the vehicle as well as listing of different model variants (Russian)
