Spare parts for trucks
Full model range: GAZ-3307, 53, GAZ-3309, GAZ-66, 3308, 33081, 33086, GAZ-33104
System for regulating air pressure in tires of GAZ-3308, 33081 cars
The air pressure system in the tires of GAZ-3308, 33081 vehicles when driving on soft ground reduces the specific pressure on the ground and increases cross-country ability.
The system for regulating the air pressure in the tires of GAZ-3308, 33081 vehicles (Fig. 1) ensures that the tire pressure changes from the driver’s seat, both when parked and while driving, depending on the nature of the road surface and driving speed, as well as monitoring the air pressure in tires.
Fig.1. Diagram of the tire pressure regulation system for GAZ-3308, 33081 cars
1-compressor; 2-control valve; 3-pressure gauge; 4-control valve handle; 5-pressure regulator; 9-air cylinder; 7-control valve; 8-condensate drain valve
In case of minor damage to the inner tube, the tire pressure regulation system allows the vehicle to continue driving without having to immediately change the wheel, since the compressor replenishes the air leakage from the inner tube.
Operation of the tire pressure regulation system for GAZ-3308, 33081 vehicles
Correct tire pressure
Therefore, the pressure must be correct, but one parameter is most often indicated on the tire and in the tables, although there are at least three of them:
- optimal pressure;
- maximum;
- pressure recommended by the vehicle manufacturer.
The maximum pressure is usually indicated on the sidewall of the tire according to the standards of the country in which the tire was manufactured. This limit must not be exceeded under any circumstances, otherwise the tire may simply collapse while driving. Optimal pressure means the ideal proportion of load and pressure in the wheel, but it is practically impossible to achieve its value. On each trip, the truck is loaded differently; it is not possible to control the parameters on the move on every vehicle.
The car's passport offers its own version of the tire pressure and it fully corresponds to the axle load, not in general, but for a specific truck. Deviation from this parameter greatly affects the final mileage of the tire, which ultimately affects the profitability of operating the equipment.
Device
The GAZ-3307, unlike its predecessor, received a sprung driver's seat with the ability to adjust the back angle and in the horizontal plane. The instrument panel turned out to be very informative and was made of plastic. The holes for the instruments were completely molded. The front panel was made of metal.
The truck cabin was designed in accordance with the trends of the Soviet period and had angular shapes. At the same time, compared to older versions, there is significantly more space in the cabin. The false door panels received additional side pockets, which could be used as a place to store various small items. Good thermal insulation made it comfortable to stay in the cabin while driving. The cabin of the model was borrowed from the experimental development of the GAZ-4301, presented in 1984. It was distinguished by its increased size and was designed for two people. Getting to the main controls was not difficult, since they were rationally located. Other features include seat belts, a modern dashboard, and soft upholstery on interior panels and doors.
Additionally, the car was equipped with an autonomous pre-heater, allowing you to start the engine without problems in the cold season. Another feature of the model was the air intake pipe running along the hood.
Gasoline modifications of the GAZ-3307 were equipped with a 4-speed manual transmission, and diesel versions were equipped with a 5-speed gearbox. At the same time, it was possible to distinguish a 4-speed gearbox by the characteristic howl emitted when moving.
For the first time, power steering appeared in the steering mechanism. The design itself underwent minor modifications and was a globoidal worm, complemented by a three-ridge roller. Later, a new mechanism with a screw and a ball nut appeared, which made it possible to reduce the force on the steering wheel.
The car was equipped with standard drum brakes with a hydraulic vacuum booster and a hydraulic drive. The parking brake was located on the transmission and was mechanical.
The suspension in the GAZ-3307 has not been changed. The truck had the ability to install an awning and a side. The durable and reliable chassis made it possible to carry heavy loads, therefore it was used for installing various bodies (tow trucks, dump trucks, vans, etc.). Manufactured goods, insulated, grain vans and paddy wagons were created on the basis of the GAZ-3307.
Price of new and used GAZ-3307
The cost of GAZ-3307 varies depending on the modification, release, condition of the car and mileage. Models released later than 20 years ago can be purchased for 100,000-150,000 rubles. Earlier versions will cost more - 350,000-400,000 rubles. At the same time, the average market price of GAZ-3307 is 200,000-250,000 rubles.
Renting a car will cost from 5,700 rubles per shift.
Correct tire pressure for truck
There is a concept of “correct pressure” for truck-type wheeled vehicles. It is divided into 3 main types:
- Maximum pressure. As a rule, this value is equal to that specified by the tire manufacturer itself. It is usually indicated on the side of the tire. But it is not recommended to constantly inflate the wheels to the specified limit or higher, as this affects wear resistance and increases the risk of creating an emergency situation on the road.
- Optimal pressure. Typically, truck owners focus on this type of “correct pressure”. The optimal pressure value is usually indicated in the form of a table on which the number of atmospheres corresponding to the mass of the transported cargo is recorded. This option is considered the best, but in practice it is quite difficult to stick to it, since the wheels will have to be inflated very often. Each car brand has its own standards, but they usually do not take into account the characteristics of different types of tires.
- Recommended pressure. The truck manufacturer indicates this value for each wheel. By default, the indicated pressure is calculated at the maximum load on a specific machine axle. If the load is significantly lower than the maximum permissible, you need to inflate the wheel below the recommended level.
Tire temperature and pressure
When inflating truck tires, one cannot ignore the climatic conditions and simply the time of year. It should be taken into account that when the temperature rises to 20 degrees, the pressure in the wheels will increase by 0.7 bar. In winter, when the air temperature drops to the same, but negative value, the pressure in the wheels will drop by 0.6-0.8 bar. In the case when the car is loaded, these indicators will differ even more from the nominal ones.
Thus, the tire pressure must be monitored and controlled as often as possible. Then the cost of operating a truck will be significantly reduced, and safety and service life will increase. Happy travels and light loads to everyone!
