Original and courageous Dump truck "Ural-M" 5557-4551-82

Scope of application, modifications and design features

A dump truck, truck tractor and chassis for special equipment of the Ural-6370 brand are designed for transporting goods, towing trailers and semi-trailers on all types of roads and rough terrain, at ambient temperatures from -45 °C to +40 °C. They are adapted for the harshest climatic conditions and intensive use; Designed for year-round storage without a garage. The manufacturer provides a warranty of 2 years or 100 thousand kilometers for all vehicles of the Ural-6370 family. The interval between scheduled maintenance is 20 thousand kilometers.

Like the classic Urals, the new cabover trucks from Miass are addressed primarily to oil and gas workers; specialists in the extraction of other minerals; military and rescue workers; builders of new roads, pipelines, wells, power lines and other facilities in hard-to-reach areas. The Ural-6370 demonstrates excellent cross-country ability wherever there is no direct plane for movement, where the passage of conventional vehicles is difficult. It can also be used as a mining dump truck in open-pit mining.

Options for this model, separated into special modifications with separate factory indices:

• Ural-6370-1121 – dump truck with a carrying capacity of 19.5 tons;
• Ural-63704-0151 – truck tractor for towing semi-trailers, with a maximum load on the fifth wheel coupling of 22 tons;
• Ural-6370-1151 – universal chassis for installing superstructures and special equipment, with a standard wheelbase;
• Ural-63701-1951 is a universal chassis for installing superstructures and special equipment, with an extended wheelbase.

Ural-6370 has an increased service life, since this model is equipped with modern imported and licensed components that meet current international quality standards:

• The YaMZ-652 diesel engine is produced by a Yaroslavl enterprise under license;
• 16-speed gearbox ZF-16S2220TD with synchronizers in all gears, from ;
• clutch “Sachs”, brand “Sachs MFZ-430”;
• "Raba Max" drive axles;
• PreLine-420 fuel coarse filters;
• modular lighting technology from Hella, which has increased impact resistance,
• three-circuit pneumatic service brake system with ABS.
• fifth wheel coupling "SAF Holland".

Ural-6370 dump trucks can be equipped with three types of dump trucks: bucket type without a tailgate; bucket type with a tailgate; straight rectangular type with a rear side. The capacity of these cargo platforms is 12, 14 and 16 cubic meters. The lifting angle of the dump truck is 50 degrees. All Ural-6370 cargo platforms are equipped with a heating system for exhaust gases from below.

Cooling system

• The engine cooling system is liquid, closed type, with forced circulation of coolant, equipped with a thermostatic device to maintain constant thermal operating conditions of the engine, designed for all-season use of low-freezing liquids.
• water pump - centrifugal type, with built-in thermostat, gear driven, drive ratio 1.727:1
• thermostat – one, with a solid filler and an opening temperature of 82±2°С
• fan with engagement clutch – Behr 720 fan with a plastic impeller and built-in viscous coupling Behr ER175 controlled from the electronic engine control system of Behr GMBH (Germany).

Technical characteristics of the Ural-6370 in numbers

• Overall dimensions: length – 7.740 m (standard), 7.965 m (extended version); width – 2,550 (along the bumper); 3,092 (based on side rear view mirrors); height – 3.358 m.
• External overall turning radius – no more than 13 m (standard), 15.5 (extended base).
• The load capacity of the dump truck is 19.5 tons.
• Maximum weight of cargo placed on the chassis: 23,010 tons (standard base) and 22,460 tons (extended base); The maximum weight of a semi-trailer for a tractor-trailer attributable to the fifth-wheel coupling device is 22 tons.
• Weight of the equipped vehicle: dump truck, chassis - 10...10.5 tons; truck tractor – 12 tons.
• The maximum gross vehicle weight, in any modification, is up to 34.5 tons.
• Gross weight distribution: dump truck - front axle: 8.485 t; rear bogie: 25,950 t; chassis and truck tractor - front axle: 7.5 t; on the rear bogie: 26 t.
• Maximum gross weight of towed trailer (semi-trailer): 42.5 t – chassis and dump truck; 64.675 t – truck tractor.
• The total weight of the road train is 76 tons.
• Maximum speed – 80 km/h.
• Fuel tank capacity – 500 liters.
• Diesel fuel consumption is from 52 liters per 100 kilometers.

Engine Ural-6370

YaMZ-652 is an in-line diesel engine, turbocharged, four-stroke, compression ignition, six-cylinder, produced at the Yaroslavl Motor Plant since 2007. It is based on diesel trucks from Renault. YaMZ-652 was repeatedly exhibited at various events, as one of the evidence of modernity, manufacturability and innovativeness of production at YaMZ. In terms of emissions of harmful substances, this power unit corresponds to the fourth environmental class for off-road off-road vehicles - UN Regulations No. 96-02, No. 24-03.

The YaMZ-652 engine is equipped with a liquid cooling system, turbocharging and charge air cooling in an air-to-air heat exchanger installed on the vehicle (without an EGR system). The crankcase and the power unit itself are reliably protected from below by a steel pan.

• Working volume – 11.12 liters.
• Rated power: 303 kW, or 412 horsepower.
• Rated rotation speed – 1900 rpm.
• Maximum torque – 1870 N.m, or 191 kgf.m.
• Overall dimensions (Length x Width x Height) – 1286 x 955 x 1136 mm
• Engine weight – 970 kg.
• Engine weight including clutch – 1338 kg.

Cars of the Ural-6370 family have proven themselves well in conditions of intensive use, largely due to the solid reserve of torque of the YaMZ-652 engine. The horizontal arrangement of the filter in a two-stage air purification system makes it easier to replace.

Considering that Ural-6370 vehicles are used primarily and most often in areas with low temperatures, the installation of a powerful Teplo-Star liquid pre-heater is of considerable importance. It provides pre-heating of the engine in cases of long-term parking. And in conditions of extremely low temperatures, the automatic heater can also operate simultaneously with the YaMZ-652 engine.

Engine air supply system

Designed to supply air to an internal combustion engine, and also to prevent dust, water, dirt, etc. from entering the engine cylinder-piston group, it performs the function of cleaning the air entering the engine by using air filters, pre-cleaners, multicyclones, etc. d.

1 – air filter 2 – air intake pipe 3 – air duct to the turbocharger 4 – air duct to the engine 5 – air duct to the charge air cooler 6 – connecting hoses 7 – charge air cooler

Specifications

• nominal air flow Q=1660 m3/hour
• air filter resistance at rated air flow no more than 2.7 kPa
• average dust transmission rate no more than 0.2%
• Duration of operation of the air filter at air dust content of 1.0 g/m3 until the ultimate resistance is reached 6.8 kPa - at least 8.5 hours
• maintenance frequency according to the light on the driver's instrument panel indicating that the air filter is extremely clogged

Transmission and axles Ural-6370

The transmission is assembled from European-made components. Clutch – “Sachs MFZ-430”: friction, dry, single-disc, with a diaphragm spring, hydraulic drive with pneumatic assistance.

The gearbox is one of the best currently available for heavy trucks of this class. The ZF-16S2220TD models have a manual 16-speed gearbox, with synchronizers in all gears, providing an exceptionally high level of vehicle controllability throughout the entire speed range. The Ural-6370 truck is also equipped with a ZF-VG2000 transfer case. The transfer case is mechanical, two-stage, with a cylindrical lockable center differential. Gear ratios: lowest – 1.536; the highest – 0.89.

Cardan drive – cardan shaft flanges with end splines. The front axle is driven, with steered wheels, and a separated main gear. The rear axles are driven, with a spaced final drive, with inter-axle differential locks, and with a lockable inter-axle differential on the middle axle. The differential lock control is pneumatic. The final drive ratio is 6.135. Bridges to Ural-6370 made in Hungary, “Raba Max”.

Main characteristics and equipment

The berth in the driver's cabin is made in the form of a folding shelf. Fixation in the raised position is carried out using textile tapes. The free space under the bed can be used to store personal items or accessories needed on the road. On the side panels of the cabin there are pockets for papers and small accessories and holders for water bottles. The interior lighting of the cabin is provided by LED lampshades, providing sufficient illumination at night.

Frame, suspension and chassis

All modifications of the Ural-6370 have an original frame with alloy steel side members of variable height. Frame of variable cross-section, width at the front - 95 cm, at the rear - 77.4 cm. Spar profile of variable height, cross-sectional dimensions of the rear part - 300 x 80 x 10 mm, front part - 210 x 80 x 10 mm.

Front suspension design. Dependent, on two longitudinal few-leaf parabolic (or multi-leaf) semi-elliptic springs, operating in conjunction with two double-acting hydraulic telescopic shock absorbers; with torsion bar stabilizer bar.

Rear suspension design. Dependent, balanced, with reaction bars, on double-longitudinal semi-elliptic springs, with a torsion bar anti-roll bar mounted on the rear axle.

Wheels Ural-6370 - “11.25-20”, steel, disc, with dismountable three-component rims, with conical landing flanges 5°; centered along the central hole of the disk. Tires 16.00R20 172F, model Bel-95 (“BelShina”, Bobruisk), pneumatic, radial, adjustable pressure, with an all-terrain tread pattern. The spare wheel holder is vertical, with a movable folding bracket and a wheel mounting beam. Raising and lowering the spare wheel is carried out by a hydraulic cylinder.

Steering and brake control

The steering mechanism of the truck is of the integral type. Booster pump –

with built-in flow and pressure valve. Working gear: screw - ball nut - rack - sector. The rack serves as the piston of the amplifier mechanism.

The working brake system of the truck is with a three-circuit pneumatic brake drive, an automatic locking system and an air preparation unit. The emergency braking system is one of the circuits of the working system. Parking operating system - with four spring energy accumulators acting on the brake pads of the wheels of the rear and middle axles. Auxiliary brake system: A compression brake is installed in the exhaust system.

Cart

So often repairmen call the chassis rudely. Let's see what the automobile plant from Miass has prepared for us this time. The general motive is this: everything is as it was, but it has become better. The suspension is traditional for this class of cars: longitudinal semi-elliptical springs and balancers. Low-leaf springs are not yet available on Miass trucks due to their low service life in difficult operating conditions. The load capacity of the front axle is 6500 kg, the load on the rear axles is calculated at 8 tons per axle. The basic configuration includes blocking cross-axle differentials for the middle and rear axles.

There are three wheelbase options for different superstructures, the distance between the axles of the rear bogie is 1400 mm. The frame is now, like many other manufacturers, reinforced with a “spar-in-spar” insert from the rear mounting of the front springs and almost to the end of the frame. The equipment of the new, fully pneumatic Wabco brake system, inside the frame, I found an air preparation unit with a filter-drier, which has long been the norm for European trucks. The brakes on all wheels remain drum brakes, but this is the norm for off-road vehicles.

The cabin is secured using a spring suspension at four points; the springs and shock absorbers are spaced at the front. In general, as I already said, what there were no complaints about before continues to remain in place, but outdated solutions are gradually being replaced by new components and assemblies, often imported or licensed, since, alas, our auto industry is not always ready to provide a worthy alternative, but using the example of this car you begin to believe that this ice has finally broken.

Truck cab Ural-6370

The Ural-6370 is equipped with a two-seat cabover cab, tilted forward, equipped with a full-fledged berth. Compared to classic Urals, in this cabin the level of comfort, interior decoration and workplace parameters (visibility and sound insulation) have been raised to unprecedented heights. The tilting of the cabin in order to get to the engine is hydraulic, with the possibility of duplicating the hydraulic drive with an electric drive.

This cabin is not original: the UralAZ designers used a proven, high-quality, excellent truck cabin. The spring suspension with hydraulic shock absorbers provides the driver with a decent level of comfort. The air-suspended driver's seat is equipped with a modern "Pilot" seat.

The steering column in the Ural-6370 cabin is adjustable in tilt and height. The steering is equipped with a hydraulic booster. Electrical control of the side rear-view mirrors greatly facilitates their adjustment; for mirrors, as an additional option, electric heating is also provided. The upholstery of the engine compartment is made of material that is practical for immediate use.

Shining with a foreign cabin...

The main thing you should not forget about when dealing with a car is that this is a real 6x6 all-terrain vehicle! This is what the entire construct is subordinated to. This means that it is inappropriate to grumble here when climbing into a very high cabin with a solid engine tunnel and a low ceiling, otherwise you will not be able to maintain the permissible four meters of overall height.

But the sleeping area has been enlarged, there are curtains, and the “sleeping area” in the new modification has lost the unnecessary glazing - this will be both warmer and more reliable. The driver and passenger seats, manufactured under Grammer license, with spring suspension and weight adjustment, turned out to be comfortable, then not immediately, but I found a rough steering column locking lever and adjusted the unit for reach and angle, after which I sat proudly in the driver’s seat, content excellent overview and studying the gear shift algorithm with the operating methodology of the all-wheel drive transmission.

An updated one-piece instrument cluster with a domestically produced on-board computer display is now instead of an instrument panel with separate removable antediluvian instruments; recently I came across the same new “tidy” on a brand new KAMAZ, but has unification ever been detrimental to domestic trucks? In my opinion, only for the good. The central console resembles a chest of drawers and has been inherited for many years, but made according to a modular principle, it easily allows you to group keys and other devices and controls associated with all kinds of additional equipment and control of the superstructure.

By the way, there is only one floor lever in the cockpit, and without flags or toggle switches. For a 9-speed ZF gearbox (and this is what is installed here), this is enough, and the control of locks and centralized tire inflation is electro-pneumatic, using buttons.

According to a long-standing Soviet tradition, the panel has a lot of stickers instructing the driver so as not to leaf through the thick Talmuds of the “Operation Manual”, and a sweet two-pin socket for a portable lamp from the era of the first manned space flight. For some reason, I remembered how once upon a time I was visiting a successful farmer, I entered his simple and good-quality rural house in the Russian outback and was amazed at the unique combination of everyday items of almost ancient Russian life, peacefully side by side with the most modern and well-selected household appliances. It’s the same in the Ural-M, and not only in the cockpit.

Reviews about Ural-6370

There are still very few reviews about the new hoodless Urals: mass production started only a few years ago, few vehicles have been produced yet, and experience in their operation has not yet been accumulated. According to the drivers’ first impressions, the new “Ivekov” cabin is, of course, very good, but the rear window in it is “useless.” It only reduces the level of thermal insulation of the cabin, and just where the berth is located. Which, in the conditions of the Far North or Siberia, is far from the least important factor.

The dump truck designers provided for the installation of an electric drive for the convenience of tilting the cab; it was available on experimental and demonstration vehicles. But production machines on sale are equipped only with a hydraulic drive.

The quality of assembly of Ural-6370 trucks at UralAZ raises complaints. Some cars have leaking axles (especially the middle one), the rear engine mount breaks, there was a case of steering rods breaking while driving: the ends flew out of the crossbar (had to be welded). There are no complaints about the power reserve and cross-country ability of the Ural-6370.