MAZ-4307 "Zubrenok" - the first Belarusianmedium-tonnage truck, with a bonnetless layout, a large cargo platform and a significant number of various modifications developed and manufactured on its basis.
Truck production
MAZ-4370 or "Zubrenok" is produced by the Belarusiancompany "MAZ". The company has been leading its history since 1944, when a car repair and repair workshop was set up in the liberated Minsk. Gradually, the company switched to assembling trucks from vehicle sets. In 1945, construction began on the production shops of the plant for the manufacture of heavy vehicles. The company assembled the first trucks MAZ-205 in 1947, and two years later the assembly-line production of cars was launched. An important point in the establishment of the plant was the development and production of trucks in a bonnetless layout. In the future, the company, thanks to its own developments, not only expanded the range of cars, but also significantly increased its production.
Currently, the association "MAZ" produces more than 80 modifications of trucks for various purposes, and also produces buses, trolleybuses, trailers and semi-trailers.
The history of the truck
The appearance of the MAZ-4370 is associated with increased at the end of XXcentury demand for medium-tonnage cars, as well as the desire of the company "MAZ" at the expense of the new model to expand the production line of trucks. Such a compact car can be effectively used in urban conditions and on short commuter transportation for transportation of small lots of various goods.
In order to speed development and startproduction at the enterprise as a prototype chose a truck of a similar class MAN-L-2000, but the carrying capacity of this model was only 2.5 tons. MAZ did not consider lower loading capacity a problem. Due to the developed basic elements of the new truck, frame, suspension, bridges, she not only designed the truck in a fairly quick time, but also carried out all the required test and certification work. This allowed to start production of the model MAZ-4370 "Zubrenok" in 1999.
Model construction
In contrast to the Russianmid-tonnage vehicles, the Belarusian novelty received a bonnetless layout traditional for MAZ. This significantly increased the size of the vehicle’s onboard platform and, according to this indicator, the MAZ-4370 (among the CIS trucks) could only make up the KAMAZ-4308 released in 2007.
The next distinguishing feature of the Zubrenka was a high comfortable cabin designed for 3 people. In order to improve aerodynamics, it was equipped with three spoilers and a fairing at once.
The design of the car is solidframe of ladder type with two spars of channel-shaped, as well as crossbars, which received a round tubular and U-shaped cross-section. Due to the dependent type of front and rear suspension on semi-elliptical springs in combination with 17.5-inch wheels, the truck received a low platform position, which, according to reviews of the owners of the MAZ-4370, was very comfortable when performing loading and unloading operations.
At the initial stage of production, the car was completed with the engine MMZ D-245.9-540 with a capacity of 135 forces and a five-speed manual transmission. Subsequently, the number of power units on the MAZ-4370 increased.
Technical specifications
The main technical characteristics of the MAZ-4370 are as follows:
- engine model - ММЗ Д-245.9.540;
- type - diesel turbo;
- volume - 4.75 l;
- number of cylinders / location - 4 / L-row;
- power - 136.0 liters. with.;
- execution - Euro 2;
- drive - rear;
- wheel formula - 4 × 2;
- type KP - five-speed manual;
- maximum speed - 90.0 km / h;
- fuel consumption (mixed cycle) - 18.1 l / 100 km;
- wheelbase - 3.0 m;
- length - 6.20 m;
- height - 0.54 m;
- width - 2.49 m;
- platform execution - onboard, with the possibility of mounting an awning;
- load capacity - 4.95 tons;
- gross weight - 10.10 tons;
- front axle load - 3.65 t;
- rear axle load - 6.40 t;
- tire size - 8,25 R20, 235 / 75R17,5
- fuel tank capacity - 130 liters;
- onboard voltage - 24 V.
Engines "Zubrenka"
In addition to the diesel engine MMZ D-245.9.540, the MAZ-4370 truck is equipped with the following power units:
1. Model - D-245.30E2
- type - diesel supercharged;
- cooling - liquid;
- number of cylinders - 4;
- cylinder arrangement - in-line (L);
- volume - 4.75 l;
- power - 156.4 liters. with.;
- compression ratio - 17.0;
- weight - 0.50 t;
- environmental performance - Euro 2.
2. Model - D-245.30E3
- type - diesel supercharged;
- cooling - liquid;
- number of cylinders - 4;
- cylinder arrangement - in-line (L);
- volume - 4.75 l;
- power - 156.4 liters. with.;
- compression ratio - 17.0;
- weight - 0.45 tons;
- environmental performance - Euro-3.
3. Model - DEUTZ BF4M 1013FC
- type - diesel;
- cooling - liquid;
- number of cylinders - 4;
- cylinder arrangement - in-line (L);
- working volume - 4.80 l;
- power - 170,0 l. with.;
- compression ratio - 16.1;
- weight - 0.56 tons;
- environmental performance - Euro-3.
Paired with a DEUTZ motor, a five-speed ZF S5-42 box is installed.
Modifications of the car
In addition to various power units, the car has several wheelbase lengthwise:
- 3.30 m;
- 3.35 m;
- 3.70 m;
- 4.20 m.
Such a number of options uniquely serves as an additional popularity for the truck. In addition to the standard cabin, a double cabin with a berth is available.
The MAZ company in combination with various engines and various wheel bases makes the following modifications:
- airborne;
- onboard tentovanny;
- dump truck;
- van;
- isothermal van;
- chassis;
- tow truck;
- board with the CMU.
A significant number of modifications, variants of wheelbases and cab versions have significantly expanded the scope of the MAZ-4307.
Maintenance and possible malfunctions
To maintain good condition andquality performance parameters of any vehicle, including the characteristics of the MAZ-4370, is required to perform maintenance in accordance with the regulations of the manufacturer. For the Zubrenok truck, the following types of necessary services are installed:
- daily - before and after work;
- rolling - performed after 1.0 thousand mileage;
- TO-1 - 5.0 thousand km;
- TO-2 - 20.0 thousand km;
- seasonal - when changing the season of operation.
Depending on the working conditions of the truck, the mileage between the first and second service could be reduced.
Among the possible problems, especially in the initial period of operation of the car, it should be noted:
- heavy gear shifting due to poor clutch adjustment;
- increased rear axle heating due to inaccurate adjustment of the gears of the gearing, as well as excessive amount of oil in the crankcase;
- irregular power steering due to the presence of air;
- withdrawal of the car when driving in a straight line, due to the weakening of the spring slides;
- low pressure in the brake system due to leakage;
- slippage of the alternator tensioning belt.
Advantages and disadvantages of the car
The owners in their reviews about the MAZ-4370 highlight the following main advantages of the truck:
- affordable cost;
- comfortable cabin;
- traction parameters of engines;
- economical operation;
- low loading height;
- large area of the platform;
- compact size.
Among the disadvantages most often noted:
- weak heater power;
- frequent breakdown of the rear axle gear;
- transmission defects;
- quick wear of the clutch disc;
- breakage springs.
Despite the shortcomings, especiallydue to its capacity, cost and the availability of a large number of various modifications, the MAZ-4370 medium tonnage truck is in steady demand. The improvements and upgrades made allow Zubrenka to remain the most popular truck in its segment.
