"MAZ 500", truck, dumper, timber carrier

The Soviet truck "MAZ 500", a photo of which is presented on the page, was created in 1965 at an automobile plant in Minsk. The new model and its predecessor differ in the location of the engine, which was placed in the lower part of the cabin. This arrangement allowed to reduce the weight of the car and simultaneously increase its capacity by 500 kilograms.

History

The basic model was the onboard "MAZ 500" with a wooden body. The carrying capacity of the car was 7.5 tons, thanks to the 180-horsepower engine, the car could easily tow a trailer weighing 12 tons.

The new family of the "five hundredth" made up a lineup of the following modifications: MAZ 500 dump truck , 505 truck tractor , 509 timber carrier, and 500S universal chassis.

In 1970, a new MAZ 500A car with an extended wheelbase and a lifting capacity increased to 8 tons came off the assembly line. The dimensions of the truck have been optimized in accordance with European standards. The transfer ratio of direct transmission was lowered, the speed of the car increased to 90 kilometers per hour.

"MAZ 500", whose photo allows you to evaluate the new design of the second generation car on its merits, looks modern. A notable difference is the characteristic grille of the radiator, consisting of eight rectangular air intakes.

"MAZ 500A" was produced for seven years, until September 1977, after which it was replaced by a new series - "MAZ 5335".

The diesel engine of YaMZ-236 brand, which was installed on the MAZ 500, could work without electrical equipment. This advantage was used by the military, who ordered the "500th" in large quantities for the needs of the Armed Forces of the USSR. Steering with a hydraulic type amplifier also did not need to be electric. The brake system was supplied with compressed air from the receiver, which, in turn, was filled with a constantly running compressor. No one was embarrassed by the lack of the full drive "MAZ 500", the characteristics of the car and engine power reserve were impressive.

Characteristics

The truck has the following technical parameters:

• Overall length - 7140 mm;
• Overall height - 2650 mm;
• Overall width - 2500 mm;
• Ground clearance - 270 mm;
• Base wheel - 3850 mm;
• The rear track is 1865 mm;
• Front track - 1970 mm;
• Weight equipped without loading - 6,5 tons;
• Weight full, with loading - 14 825 kg;
• Speed for freight transport - 75 km / h;
• The speed of the maximum value is 90 km / h;
• Consumption of diesel fuel - 25 liters per 100 kilometers;
• Capacity of the fuel tank is 200 liters.

Engine

Engine features:

• Brand - YaMZ 236;
• Production - Yaroslavl Motor Plant;
• Type - diesel;
• The volume of the cylinders is 11,150 cu / cm;
• Maximum power - 180 hp;
• The maximum torque is 667 Nm at 1500 rpm;
• Number of cylinders - 6;
• The compression ratio is 16.5;
• Diameter of the cylinder - 130 mm;
• Stroke of the piston - 140 mm;
• Working order of the cylinders - 1,4,2,5,3,6;
• The valve mechanism is a valve OHV;
• Number of measures - 4.

Transmission

Options:

• Model - 236B;
• Manufacturer - YaMZ;
• Type - mechanical;
• Number of speeds - 5 front and 1 rear;
• Switching mechanism - lever, floor, manual.

Transmission numbers:

The first speed is 5.26;

Transmission 2 - 2.90;

Transmission 3 - 1.52;

Transmission 4 - 1.00;

Transmission of 5 to 0.66;

The rear gear - 5,48.

Transmission of the driving axle - planetary gearboxes in wheel hubs with a gear ratio of 7.24.

Modifications

• "500 SH" - universal chassis;
• "500V" - onboard, equipped with a metal platform;
• "500G" - onboard, with an extended base;
• "500С" - for operation in northern conditions;
• "500Yu" - designed for operation in southern latitudes;
• "505" - all-wheel drive;

Chassis

• The front axle is a transverse beam on semi-elliptic springs, a pivot pin, a wheel hub on tapered roller bearings, a tension controlled by a clamping nut with a clamp. Telescopic shock absorbers with hydraulics.
• The rear axle is a reducer beam on longitudinal reinforced springs of a semielliptical type. Shock absorbers, hydraulic, reciprocating action. Buffers for vertical loads. Semi-axial differential of planetary construction, hypoid. Reduction gears of rotation transmission in the hubs of the rear wheels.
• Cardan shaft - two-section with intermediate support. Crossings on needle bearings.
• Brake system - pneumatic, with pressure supply from the receiver. The system only functions when the engine is running. On all wheels the brake mechanisms are of the drum type.
• Steering - worm-hypoid mechanism.
• The convergence of the front wheels is regulated by a transverse beam equipped with a lanyard bushing.
• Clutch - two-disk dry, with compensating absorbers. The squeeze mechanism is pneumatic, combined with a thrust bearing.

Cabin

"MAZ 500" is equipped with a spacious all-metal cabin on the hinged lift. If necessary, the entire structure rises to an inclination of 45 degrees, with access to the engine and all associated mechanisms. The cabin is equipped with minimal rest facilities.

Control mechanisms "MAZ 500" are located conveniently, the instruments are well read, the steering column is designed for a person of average height and is not regulated. The cabin has good sound insulation. Heating works efficiently enough.