T-74 tractor: features and characteristics

T-74 - caterpillar tractor of the Soviet period, relating to the traction class (three tons). Produced in 1962 - 1983 in Kharkov at the tractor plant. It was created in the process of modernization of tractors T-54 and T-75.

Spheres of use and basic parameters

Spheres of use of a tractor:

• Agricultural activities;
• Transport works (transportation of various cargoes in a trailer, load-carrying capacity - no more than two tons);
• Communal services;
• Industrial production;
• under construction.

Regions of use - exclusively with a temperate climate.

The main dimensions of the T-74 model:

• Length - 4225 mm;
• Width - 1845 mm;
• Height - 2325 mm.

Total weight (in tons) - 5.91. The cab is located at the rear of the tractor, and the engine is in the front.

T-74 tractor: specifications

• The engine in the tractor is SMD-14A.
• Power (kW) is 75 horsepower.
• Gearbox - mechanical.
• Side brakes.
• Hydraulic equipment of the tractor: hydraulic cylinder (rear hitch), hydraulic pump, distributors.
• Electrical equipment: generator and headlights.

Tractor T-74 was produced from April 1962 to November 1983. And for this period 880,792 pieces were produced. The next model is T-150.

Tractor T-74 in appearance and design was similar to the units of the brands DT-54 and T-75. In this case, the frame is a channel frame, on which, as was said above, there is an engine in front and a cab at the rear. The power transmission included: clutch, propeller shaft, box, swing mechanism, final speeds.

Internal elements

The brand of the engine SMD-14A: four cylinders, diesel in-line, with a vortex combustion chamber. Air cleaner of cyclone type. The suction pipe goes into the exhaust area of the engine in the process of dilution, which is created by exhaust gases in the suction structure. Dust, which is collected in a bunker, passes through a special process, and it carries away gas. The lubrication system includes an oil cooler, which is disconnected from the common system in winter during cold time due to resetting the switch.

The engine starts at a reduced temperature on the suction-type manifold due to the pre-heater operation. Starting mechanism - petrol PD-10M-2 - single-stage reducer. The clutch element is a two-disk clutch. Foot operated shutdown drive. The engine is equipped with a mechanical six-speed gearbox, the control is carried out using two levers. The first group: working, high, neutral. Second lever: 3 forward speeds, reverse. There is also a neutral regime here.

Device Features

Before disconnecting the clutch, you first need to turn on the gear, and then - their group. The mechanism of the blocking mechanism does not allow the transfer of the gears of the gearbox to operate until the moment when the clutch is fully disengaged and the primary shaft stops.

The T-74 tractor has the following frame construction: two longitudinal channels are connected to each other by a front bar, in the middle - by two transverse bars, and there is an axis in the rear. Suspension balanced. Working equipment: separate hydraulic aggregate system, rear attachment, power take-off shaft. Distributor (hydraulic system) - three-zolotnik.

The cabin is completely closed and well heated. Seat on two seats with a soft back. The right windshield has a manual windshield wiper. The movement of warm air passes through a special device - the casing, and in its interior there is an adjustable damper. There is an increased level of visibility. The safety precautions are observed. There is ventilation.

Control mechanisms on the tractor

Diesel rpm is regulated by a special lever. Turning the tractor T-74 performs using one of the two levers and thanks to the existing pedal braking caterpillar mechanism. The gear shift is possible only when the clutch is completely turned off. The main working transmissions: the second - the fourth. The fifth and sixth are used for work with a special machine and during the process of cargo transportation.

The first transmission can be used in the only case: when overcoming the short-term increased resistance. The entire mechanism of electrical equipment operates with a constant current flow (the nominal voltage must be 12 V at the same time). The electrical equipment includes: a generator (power - 180 W), a relay regulator, a battery, a starter for starting the engine, a sound signal, an ammeter, lights (four pieces), a dashboard illumination lamp (two units), a dome light in the cockpit Fan motor. During operation with various hanging elements, when the speed is switched on, it is necessary to give an audible signal, then start the movement without jerks, smoothly. Moving through the mounds, ditches and other obstacles, you should use a low speed, not allowing the roll and swing.

So we described the tractor T-74, the photo of which is presented in the article.