Loader PUM: 500, 1000, 800, technical characteristics, mini, reviews, frontal, prices

Loader PUM 500 - characteristics, reviews, price

The compact loader PUM - 500 is a multifunctional equipment that is designed to perform large-scale work in limited areas. Most often, this model of loader, the generally accepted name of which is “Beaver,” is used in warehouse or urban environments. Small dimensions combined with high performance are indispensable for loading and unloading operations with bulk and piece cargo. The machine is produced by, which has concentrated its production on this particular loader, which is in high demand in the special equipment market.

Areas of application of PUM-500

Not every single-bucket front loader can work in cramped conditions. The versatility and compactness of the PUM-500 loader allows it to be used for a variety of tasks in hard-to-reach places.

That is why this machine is actively used in:

• utility services to level the soil and clear the area of ​​debris, snow or construction waste;
• road construction organizations, for planning sidewalks and roads in narrow streets;
• construction companies for working with bulk cargo;
• warehouse logistics, for loading and unloading operations with all types of cargo, including pallets;
• agricultural sector on livestock farms and hangar-type warehouses;
• in the private sector to perform various types of work in areas where access to large equipment is limited.

“Beaver” performs the job equally effectively in hot summer conditions or severe frosts. To achieve this, the design of the loader uses an unpretentious engine, the cabin provides comfortable conditions for the driver, and the working units are well protected from the aggressive influence of the external environment.

Review of "Beaver"

The “knocked down” design of the PUM-500 really resembles a small energetic animal. The main advantages of this loader are:

• efficiency, consisting in low fuel consumption and unpretentiousness to maintenance;
• maneuverability and minimal turning radius;
• power of the engine and working units, capable of operating at the same level as medium-heavy equipment;
• low noise and exhaust emissions;
• a wide range of additional attachments for multi-level work;
• safe operator cabin;
• possibility of installing caterpillar tracks;
• availability of consumables and ease of maintenance.

The Bobr loader is presented in two modifications. Since 2005, production of a more modernized model PUM-500U began, which was equipped with a more reliable and powerful German engine. This made the modernized model much more economical against the backdrop of a general increase in power and speed performance.

Device and main technical characteristics

The design of the PUM-500 loader is distinguished by the simplicity of its external structure and the design of its working equipment. The length of the loader wheelbase is kept to a minimum by the designers. This provides good stability and maneuverability. At the same time, the center of gravity is concentrated at the lowest point.

The hydraulic boom operates directly from the power taken from the engine rotor. One pair of hydraulic cylinders provides lowering and raising of the boom, and the second pair directly controls the working equipment. The boom and work equipment are controlled from the operator's cabin using a simple lever system. Maneuvering is performed by braking one side of the wheelbase.

The PUM-500 loader is equipped with a D120-10 diesel engine. The air-cooled four-stroke two-cylinder power unit ensures operation of the unit without coolant, while having a maximum heating temperature of up to 110 degrees. With a working volume of 2.08 liters, it has a rated power of 30 hp.

The German HATZ diesel engine installed on the modernized version of the PUM-500U is distinguished by reliable European quality.

The Beaver's carrying capacity reaches 0.5 tons. The maximum operating speed is 9 km/h. The total weight of the entire loader structure is 2.76 tons.

The PUM-500 loader is additionally equipped with mounted working units for working with different types of cargo and changing the working purpose:

• equipment for cleaning areas: road brush, sweeper brush, shovel and rotary snow blower;
• equipment for loading of various types of cargo: forks, pallet forks, buckets with and without teeth;
• earthmoving equipment: excavator bucket, hydraulic drill;
• concrete mixer;
• welding machine.

The capabilities of the PUM-500 loader are expanded thanks to additional equipment with caterpillar tracks.

Reviews and operating tips from Beaver owners

The simple design and control of the PUM loader allows you to start working with it even if you have minimal skills in operating loading equipment. However, it won't hurt to get some preliminary training in how to operate a forklift.

Managers of construction enterprises use a loader to transport building materials directly to sites under construction, which is impossible when using a larger front-end loader, and not all mini-loaders are suitable for transporting bulk cargo. The high lifting height of the bucket allows you to unload cargo into vehicles, regardless of the height of the sides.

During operation in the cold season, weak operation of the heating system is noted; the tightness of the cabin does not imply long-term operation of the operator at low temperatures.

The PUM-500 loader, which has been working at the enterprise for 17 years, has undergone three major repairs during this time, not counting the mass of minor ongoing faults. This disadvantage is compensated by the availability of auto parts and consumables, as well as the possibility of self-repair.

The cost of the Bobr loader is in the price category of special equipment that is accessible to even the smallest enterprise with a small budget. The price of a used PUM-500 does not exceed 600,000 rubles, taking into account the purchase along with several units of attachments.

How to choose the type of mini loader?

First of all, determine the “work front” that the machine has to perform. So, for multifunctional operation you will need equipment that has a large selection of replaceable equipment, and, therefore, a powerful hydraulic system. Typically, skid steer loaders have better hydraulic performance. If the equipment has to perform exclusively lifting and transport operations, then in this case you should opt for a front loader. One of the main features of a mini front loader is considered to be high transport speed. Using a mini loader of this type will be beneficial when you need to move loads over long distances. While it is advisable to choose skid-steer vehicles when transporting goods no more than 25 - 30 m.

Photo source: bobcatrussia.ru One of the advantages of mini skid steer loaders is powerful hydraulics

Buyers from the Russian Federation often give preference to skid-steer machines, which were originally created for relatively small jobs in cramped conditions. The challenges facing this type of equipment affected their design features: the design of the chassis, the method of turning and attaching the boom (located at the rear of the machine), and small dimensions. Thanks to the rear boom, the mini loader operator can bring the equipment closer to the dump truck at a minimum distance when loading. However, if we compare skid steer loaders and models with a front-end design, the former have a number of “imperfections”:

• high fuel consumption;
• Due to skid steer, the loader wheels wear out quickly;
• low cross-country ability due to low ground clearance;
• poor stability on slopes due to the short wheelbase;
• complex hydraulic system (is a disadvantage if replaceable working equipment does not have to be changed frequently).

This list is complemented by the characteristic already mentioned above: the speed of skid steer loaders is lower than that of front-end models.

Often, mini front loaders are equipped with a conventional mechanical transmission. And unlike skid steers, which can handle grades of up to 25 percent, rigid skid steers can handle grades of up to 40 percent.

Photo source: bobcatrussia.ru In winter, mini loaders are used to clear snow

Articulated skid steers feature a simple steering system. But if the machine is required to be able to take a level position relative to the ground (relevant, for example, when planning a site), then it is worth purchasing a mini-loader (including a skid steer) with a rigid frame that will allow the machine to remain stable. An articulated skid steer in this situation will experience vibration at the articulation point and rear axle. In addition, the maximum lifting capacity of an articulated skid steer is reduced when the frames are folded down, whereas the lifting capacity of a rigid skid steer is always at its maximum.

Important How many cubes of concrete are in a KamAZ mixer: how to correctly calculate the volume of a concrete mixer

Features and Benefits

The bottom frontal PUM with side rotation has a simple design and its advantages:

• the boom hydraulic system consists of 4 hydraulic cylinders, 2 - lifting and lowering, 2 - controlling the bucket;
• the boom is attached to the rear, and the bucket comes out from the front of the cabin, thereby maximizing the unloading height
• the costs of the PUM 500 mini-loader quickly pay for themselves;
• a variety of attachments provide a wide range of applications;
• The loader has the smallest turning radius (2m) - especially for working in cramped conditions. The Beaver changes the direction of movement not by turning the wheels, but by adjusting the rotation speed: for a right turn, the right side is braked, for a left turn, the left side is braked (the principle is like a tank);
• loader weight with bucket = 2.76 tons;
• cabin glazing - reinforced glass;
• to increase cross-country ability, tracks can be installed;
• developed after-sales service due to a large number of plant dealers.

Introduction. New or used?

On our website you can quickly sell or buy profitably mini loaders from leading equipment manufacturers.

A mini front loader is an efficient, small-sized piece of equipment equipped with an arm on which attachments are mounted.

Purpose and advantages of mini loaders

There are practically no restrictions on the use of this technique. They are used wherever there is a need to move light weight loads.

The presence of all kinds of attachments that can be used on this type of equipment allows you to quickly transform a mini-loader into a bulldozer, truck, mower, loader, snow blower and a number of other machines within a short period of time.

Types of mini loaders

There are two main types of skid steers:

• crawler;
• wheeled.

The most common type is the skid steer loader. It is distinguished by high speed and maneuverability for such equipment, and the ability to independently move from object to object, including along transport communications.

The tracked type lacks such capabilities, but due to its low ground pressure, it compensates for this relative disadvantage by the fact that it can be used in forested and environmental areas.

Buy mini loaders from leading manufacturers

• Mustang: Mustang Manufacturing Company Inc is one of the pioneers in the production of skid steers. The first skid steer loader model appeared back in 1965, when the term “skid steer” did not even exist. Today the company is proud of the most powerful skid steer in the world, the Mustang 4000V.
• JCB: One of the world's best-selling brands, the JCB range of skid steers is now recognized as the best in the world.
• Hyster: Manufacturer of the widest range of loading machines and equipment. The company's products are distinguished by high quality and reliability, as evidenced by the presence of an ISO 9002 certificate at each of the company's plants.

Important How the front and rear axles of the ZIL-131 truck are designed

Attachments

The range of attachments is very diverse and includes about 2 dozen additional units , both simply mounted and active:

• hook - lifting and moving loads up to 500 kg;
• bucket without teeth (welded sheet steel) - loading of bulk and fine materials and soils of categories I-IV;
• bucket with teeth (steel bucket with 6 teeth) - collecting and moving bulk and small-sized materials (crushed stone, soil, peat, etc.), working with rocks and frozen soil;
• cleaning/road brush with or without storage – for cleaning various areas;
• snow plow with one blade - for removing snow and leveling the soil, the angle of the blade is adjustable;
• rotary snow blower - snow removal;
• forks for a loader (mounted) - for moving palletized goods;
• fork – moving and loading bushes, branches, pipes, logging waste, wood shavings, straw, sawdust, bark, etc.;
• two-axle flatbed trailer - weight = 750 kg, volume = 1 m³, connected using a towbar;

• track set - mounted on top of standard loader tires, increases traction on soft soils or in winter conditions;
• backhoe excavator - digging trenches, ditches and pits. Volume = 0.062 m³. Hydraulic drive, maximum digging radius = 3.6 m, digging depth = 1.45 m, unloading height = 2.35 m, bucket lift height 2.5 m, working area = 110°;
• hydraulic drill - for drilling wells in the ground up to 1 m, Ø = 28 cm;
• concrete mixer - loading volume = 100 l, ready concrete = 65 l, operating temperature ≥ +5°C;
• pumping unit - water pumping speed = 100 m³/hour, power consumption = 7.5-9.5 kW;
• compressor - for supplying air to equipment, pneumatic tools, power consumption (nominal) = 9.2 kW;
• welding installation - for electric welding when other power sources are unavailable.

"Beaver" is used in industry, residential and road construction, in public utilities and agriculture and for various auxiliary work.

Model overview

The first PUM 500 cars began to be produced in 1992.

Since 2005, the PUM-500 has been replaced by a modified model PUM-500U .

the PUM-1000 and PUM-600 models were released , in which the control levers were replaced with joysticks, the cabins were improved, and a thermoelectric micro-climatic unit was used for the first time.

The line of mini loaders includes models PUM-800 and the largest standard size PUM-1250. In 2012, the plant began production of a new mini-loader PMK-6.02, created on the basis of PUM-500U.

PUM-500U with German “HATZ” engine

Replacing the PUM 500 engine increased the power of the loader, reduced fuel consumption, and the machine began to comply with Euro II and EPA standards.

The HATZ 2M41 manufactured by HATZ Diesel (HATZ Motorenfabrik GmbH & CO.KG) is the world's first industrial diesel engine with built-in automatic protection.

Hatz multi series is a series of long-life multi-cylinder industrial diesel engines. Hatz multi series engines are used in construction, mining, road repair equipment, and in diesel generator sets.

Alexey (profession: Machinist):

1 engine is not bad, there are spare parts in stores. 2 fuel consumption is low. 3 starts well in cold weather 4 yes, it eats any diesel fuel. My choice was pum or mksm. mksm costs twice as much, but the prices for spare parts are the same.

TOP 3 PUM mini-loaders, their design and technical characteristics

The small-sized front loader PUM 500 is a multifunctional machine, adapted for work in a limited area. Equipment bearing the trade designation “Beaver” is used in public utilities and warehouses. Operation of loaders is permissible at ambient temperatures from -30°C to +40°C. The production of cars was carried out by a division of the Uralvagonzavod enterprise.

PUM-500 (JSC Uralvagonzavod)

The latest modification of this model, released by Uralvagonzavod in 2005, was called 500U.

Photo source: allspectech.com

Alexander 111

PUM-500 is a structurally unsuccessful machine from birth. There is a big problem with hydraulics; the hydraulic shock in the system during operations is built into it by the manufacturer.

apolonchik30

I would like to share my experience in converting the PUM-500 loader. I struggle with the lack of smoothness and convenience in performing operations, for which I replaced the standard lever system with a similar MKSM-800, installed a folding transverse beam for resting the hands, converted the manual throttle system to a multi-position one like YuMZ, and removed hydraulic throttles from the cylinders. All this gave noticeably better controllability, but I still don’t know how to properly get rid of water hammer when performing any operation. I think the reason is in the remote valve blocks, which are responsible for drainage and at the same time work as hydraulic locks.

24k

There are more than 300 posts in the topic, but the problems are about the same... I started looking closely at the PUM-500, but now I agree with my older comrades that when choosing, you need to check:

1. Of course, his ability to load his own bucket with gravel or sand, if this works, then look further.
2. With a full bucket we try to drive in a straight line.
3. We are trying to turn around (with a full bucket). If this works and it doesn’t stall, look further.
4. We try to rest the bucket against a wall or a truck wheel and give full throttle. If the wheels are slipping, that’s good; if it stalls, see point 5.
5. We throw it into a quarry and cover it with soil, as a warning to our descendants not to make or buy such equipment ever again. Dot.

Device

Universal mini loaders PUM consist of a number of units with mechanical and hydraulic principles of operation:

• chassis;
• hydraulic system (including pump, lines);
• replaceable working tool mounted on the boom;
• cabins and control drives;
• electrical equipment;
• heating and ventilation systems.

The PUM loader allows the installation of additional working equipment. The tools and accessories necessary for servicing the equipment are included in the factory delivery set. To increase maneuverability, rubber tracks are installed on the wheels. Torque is transmitted due to friction.

The power unit is located at the rear of the chassis. The design of the unit includes a clutch that turns off the pump when the crankshaft is cranked by the starter. The clutch control is manual, located in the operator’s cabin. Hydraulic fluid is stored in a single supply tank. The system includes a radiator designed to cool the oil.

For movement, hydraulic motors are used, installed symmetrically on the sides of the machine. The kinematic drive diagram contains final drives that distribute torque between the wheels of each side.

The vehicle turns due to the difference in the angular speeds of the wheels on the left and right sides.

A disc parking brake is located on the gear housing, which is activated by the operator. The device can be used to emergency stop the machine if the hydraulics fail.

The chassis includes wheels equipped with paired stamped disks. Sponge or pneumatic tires can be used. To work on soils clogged with sharp objects, massive tires are used. The wheels are fixed with specially shaped nuts on hubs located on the output shafts of the final drives.

The machine's cabin is mounted on a chassis on supports and a torsion bar. Attachment points allow the unit to tilt forward. The fuel supply is located in a tank mounted on the right frame strut. Lines equipped with filters are laid from the tank to the engine. The amount of liquid in the tank is determined using a dipstick located next to the filler neck. The bottom of the container is removable, which simplifies the cleaning procedure.

Specifications

The PUM loader was produced in several modifications, differing in load capacity and overall dimensions. The weight of the load being lifted is displayed in the model index. The plant supplied machines designed to move cargo weighing from 600 to 1250 kg. The diesel engines used are air-cooled and have power ranging from 30 to 76 hp.

The maximum speed of the machine is 9-12 km/h (depending on modification). The cargo boom of the machine has different lengths of elements. The unloading height varies between 2.15-2.45 m. The operating weight of the loaders is 2.76-4.4 tons.

The following attachments are used on the machines:

• a hinged hook that allows suspension and movement of loads weighing up to 500 kg;
• a steel bucket without teeth, used for working with loose soils in the warm season;
• a 6-tooth bucket designed for working with frozen soil or large-sized rocks;
• a road brush with a hydraulic motor, designed to clean sidewalks and roads from dust and dirt;
• snow blade equipped with an installation angle adjuster;
• cargo mounted forks, allowing you to move cargo on pallets;
• a grip used when transporting cut branches or pipe sections;
• a hydraulically driven drilling rig designed for drilling wells up to 1000 mm deep;
• compressor;
• welding unit with generator;
• centrifugal pump with a capacity of up to 100 m³/h.

There is a towing device on the rear of the machine. The plant allows towing a trailer designed to carry 750 kg of cargo.

PUM 500

The front-end mini-loader PUM 500 is equipped with a Russian 2-cylinder diesel engine model D120-10, supplied by the Vladimir Tractor Plant. The engine develops a power of 30 hp, the cylinders are air cooled. The power unit of the small-sized 500U is the motor model 2M41 and 41Z, supplied by Hatz. The engine develops a power of 32 hp. at 2500 rpm. All engine modifications are forced air cooled and started using an electric starter. The fuel supply is in a 46-liter tank.

Technical characteristics and dimensions:

• length (in transport condition without attachment) - 2378 mm;
• width - 1565 mm;
• height (with installed beacon) - 2410 mm;
• curb weight (option with bucket) - 2760 kg;
• unloading height - up to 2150 mm;
• load capacity - 500 kg;
• maximum speed - 9 km/h;
• traction force - 1200 kg;
• wheelbase - 928 mm;
• track - 1300 mm.

PUM 800

The PUM 800 loader differs from the previous model in the use of a D 144 motor. A design feature of the engine is forced air cooling. The air flow intensity is adjusted using a rotary valve. Power unit power 60 hp. at 2000 rpm. The weight of the equipped machine with a bucket is 3700 kg.

Joysticks are used to control the machine. On early releases, the hydraulic distribution block had 1 spool, which included the left and right side drives. Due to problems with ensuring symmetrical thrust, a unit with 2 spools began to be used. The chassis in the standard version is equipped with wheels with a sponge tube; tires of the GK9.00-15 model are used.

PUM 1000

The PUM 1000 loader is equipped with a 4-cylinder atmospheric diesel engine D 144, which is used in agricultural machinery. The machine is equipped with a fuel tank designed to hold 80 liters of liquid. The hydraulic system is equipped with an axial piston pump with variable displacement.

Loader dimensions and characteristics:

• length - 3700 mm;
• width - 1600 mm;
• height - 2450 mm;
• wheelbase - 928 mm;
• turning radius (along the outer corner of the mounted bucket installed in the transport position) - 2500 mm;
• working pressure in the hydraulic system - 21 MPa;
• traction force - 2.2 tons.

The machine is designed for loading and unloading operations, cleaning the roadway from dirt and snow, and installing drilling equipment. The operator's cabin is closed and equipped with a front door. All controls are located inside the cabin.

Diesel loader PUM-800

A mini-loader is a compact pneumatic wheeled or tracked vehicle with boom-mounted loading and transport equipment. Appearing in the late 50s of the twentieth century, mini-loaders quickly gained popularity all over the world and gave rise to a lot of design developments and models of similar machines, aimed at application in any specific industry or economy.

It should be noted that even now a wide variety of models of these machines is combined with a very limited set of new conceptual solutions. For example, all skid steer loaders are four-wheel drive, short-wheel drive, and have low ground clearance. The wheels of the left and right sides are driven by separate motors and are capable of operating in counter-rotation mode, this allows the loader to turn practically at one point. The arrow is usually U-shaped in plan. Its crossbar, being the front part, with a gripper and a working element is located directly in front of the operator’s cabin, and the rear ends of its side beams are hinged to a high portal located behind the cabin and which is an integral part of the mini-loader frame. This arrangement has some inconveniences, namely that the operator has to step over the working part of the machine to enter the cabin. However, in some models it has already been eliminated. The equipment of the mini-loader includes a replaceable working element, a device for its installation and dismantling on the load boom; a hydraulic system that allows it to be manipulated. However, their designs and controls are constantly being improved.

The finest hour for mini-loaders, and then large ones, came in 1970, when the Bob-Tach device was invented for quickly changing attachments. With its help, the operator became able to solve many problems during one shift. The machine has received extraordinary versatility thanks to a wide range of attachments, the range of which is constantly being updated. It should be noted that hydraulically driven replaceable attachments are quite expensive, for example, the FCP-6 hydraulic compacting vibratory plate from Furukawa (Japan) costs 209,650 rubles, and the Hitachi F3 hydraulic hammer is offered for 182,000 rubles. But, despite the high cost, the attachments more than pay for themselves, because each of them replaces an entire machine.

It would be enough for our average farmer to have one such mini-loader with a set of necessary attachments to, basically, satisfy the need for mechanization of his farm. This judgment, perhaps, also applies to small construction firms, of which there are now a large number in Russia, building cottages, dachas, garages, etc.

In Russia, the production of loaders is regulated by GOST R 51601-2000 “Single-bucket construction loaders. General technical requirements". Among its requirements, the design of the loader must ensure: stable operation on slopes of at least 5 degrees, climbing up to 20 degrees for wheeled ones and 30 for tracked ones; operability with all types of replaceable equipment.

The warranty period for the operation of the loader according to this GOST must be at least 12 months from the date of commissioning, but not more than 15 months from the date of shipment by the manufacturer. In our country, the main manufacturers of universal mini skid steer loaders are Kurganmash OJSC.

Kurganmashzavod today offers mini-loaders of four models with a lifting capacity of 400, 600, 800 and 1000 kg. They are equipped with German Hatz engines, in addition, a Zetor engine is installed on MKSM-800 upon request, and the MKSM-800K model with a Cummins power unit is also offered. If necessary, the wheels of these models can easily be replaced with tracks, which significantly increases its maneuverability.

The largest machine-building enterprises in Russia include the Nizhny Tagil enterprise Uralvagonzavod, which produces tanks, rolling stock of railway transport, as well as construction equipment, including universal mini-loaders PUM, intended for operation in areas with a temperate climate, where the temperature range ranges from -30 to +40оС. To create a comfortable environment for the operator, the cabins of PUM mini-loaders are upholstered with sound-absorbing material; a large glass area significantly increases visibility. Replacing one type of attachment with another does not require the use of any additional devices. PUM mini-loaders are driven by domestic engines, however, options with imported engines are possible, but they are much more expensive.

The universal small-sized loader PUM-800 is designed for mechanization of loading and unloading operations with soil of categories I-IV (according to the appendix to GOST 17343-83), with bulk and small-sized materials, both in normal and cramped conditions, transport and warehouse work with piece cargo, special work (drilling wells, clearing dirt and snow from roads and sidewalks). The loader is operated in areas with a temperate climate in the temperature range from -30C to +40C.

The design of all elements of the operator's cabin is made taking into account ergonomic requirements: a wide, comfortable door, upholstery made of sound-absorbing material, which creates comfortable working conditions. The large glass area provides a comfortable view. Optimal placement of controls and instruments increases productivity and guarantees ease of use. The accessibility of all components and their thoughtful design makes it easy to carry out maintenance, repair and washing of the PUM-500 in any workshop.

Environmental parameters fully comply with European standards. The wheel formula with low ground pressure allows the PUM-500 to be used both indoors and on city streets and in park areas. From a wide range of special attachments, the customer can create a set that best suits his requirements. The design of the loader ensures quick and easy replacement of one type of equipment with another with a minimum of operations and without the use of any special devices.

Ural Special Equipment LLC offers:

universal compact loader PUM-500 (diesel, bucket)

universal compact loader PUM-800 (diesel, bucket)

Prices and reviews

The PUM loader has been discontinued at Uralvagonzavod, so new equipment is not available for sale. On the secondary market, the cost of cars in poor condition starts from 150,000 rubles. Loaders of models 500 and 800 after major repairs are estimated at 400,000-500,000 rubles. Version 1000 machines cost up to 750,000 rubles.

A used Model 800 loader was in operation. The weak point is the hydraulics, on which the hoses burst and the seals began to leak. Repairing the machine is simple because standard parts and tools are used. Restoring functionality did not take more than 5-6 hours. But if you have the funds, it is better to purchase a more reliable and productive machine produced by Bobcat.

At work I had a PUM 500 machine. The hydraulics do not turn on smoothly; when the fluid is supplied, a constant water hammer occurs. Because of this, system components are destroyed. Hydraulic motors operate at high speed when supplying cold oil. As the liquid warms up, the dynamics decrease. The defect is observed only on worn components.

MUMS-11 (JSC Bars)

Despite the fact that the production of cars under this brand has long been discontinued, they have not yet been completely written off. “Barsiki,” as their owners call them, continue to be used to perform small amounts of work, and advertisements for their sale appear on trading platforms.

Photo source: from the personal archive of Alexander 126

Maxim_II

Based on the experience of repairing my Barsik, the propulsion pumps go down first, then the motors. There are no problems with the hydraulic cylinders, everything is repairable and just like a bicycle. The only caveat: if the bushing is made of steel, it is better to order a bronze one. My steel cuffs were constantly being squeezed out.

Alexander 111

MUMS-11 has not been produced since the 90s, but they made a lot of cars, and their maintainability for a private owner is very good. The joysticks are hydraulic, the control is very easy and precise, the MKSM with its cable joysticks was not even close. "Barsik" is an analogue of the Czech UNTS-045. “Bars” and PUM are very similar in appearance, so when they start to criticize PUM, “Bars” is also unfairly punished because of the similarity with it.

coolvitalij

Our “Barsik” is 20 years old. I've been working there for 17 years. During this time, the engine was overhauled 4 times. The SPV-20 pumps were overhauled twice, the hydraulic motors were repaired twice, the working body pump was repaired four times, and the working body distributor was repaired three times. This is not counting minor repairs (mainly the replacement of cuffs on hydraulic cylinders and inexorable oil leaks). So it is also very expensive to repair and maintain this forklift.

Loader PUM-500

PUM-500 (“Beaver”) is a universal small-sized vehicle designed for mechanization of unloading and loading operations with small-piece materials of categories I-IV and bulk cargo masses.
The manufacturer of PUM-500 equipment, which is very popular on the domestic market, is Uralvagonzavod. Moreover, this model accounts for approximately 90% of the total volume of production of loaders of this enterprise.

"Beaver" is used:

• in logistics. The equipment is capable of performing loading and unloading operations with piece goods, as well as their transportation throughout the warehouse;
• in residential and industrial construction. PUM-500 is perfectly suited for loading and unloading soils belonging to categories I-IV (from light clay and loam to sand);
• for the needs of the population. The compact loader easily copes with complex tasks in confined spaces. Moreover, using the “Beaver” you can even perform excavation work;
• for municipal needs. The loader is effective in clearing roads, parks, sidewalks from dirt and snow in urban environments. Also, PUM-500 allows you to perform terrain planning. Due to the low pressure on the ground and small size, the equipment does not damage roads and the top layer of soil.

This model can be used both in standard and cramped conditions. The loader is popular among organizations located in areas with moderate climatic conditions. PUM-500 is not demanding on temperature indicators and operates effectively in the temperature range from -30 to +40 degrees. Comfortable conditions for the operator are ensured due to the design features of the equipment cabin.

PUM-500

The PUM-500 loader, also known as the “Beaver”, is a small-sized multifunctional machine that is designed to perform loading and unloading operations of bulk materials, as well as small-sized materials of the first, second, third and fourth density categories.

This loader is produced by the domestic manufacturer Uralvagonzavod, which is currently one of the leaders in the domestic market of small-sized special equipment. 90 percent of all products that are currently produced are occupied by the PUM-500 loader. This is explained by the fact that this machine is the most relevant among similar imported models, since it includes the same qualities, but the cost is slightly lower.

PUM-500 is most popular in organizations that are located in areas with moderate climatic factors. The machine is not demanding on temperature indicators and is capable of performing the necessary types of work with maximum efficiency even in frosts of minus 30 degrees and heat of plus 40 degrees. Comfort for the operator is ensured thanks to many cab design features.

The loader is equipped with a diesel two-cylinder power unit of the D-120-10 brand. The engine occupies a fairly small space, however, it is capable of developing a rated power of 22.1 kilowatts or 29.9 horsepower, which is enough for most jobs.

Article navigation

Video

PUM-500 is considered a multi-purpose vehicle. Among its distinctive features are excellent maneuverability, economical fuel consumption and high performance capabilities. The model has small dimensions and is designed to perform various operations of medium severity. PUM-500 can be found at enterprises in the municipal, construction and repair, agricultural and industrial sectors.

At the same time, the restriction on the emission of toxic substances from exhaust gases and the noise level of the PUM-500 fully comply with European standards.

The equipment has a high degree of versatility due to the wide range of replaceable equipment installed on it.

In addition to the standard modification, Uralvagonzavod produces the PUM-500U model. It is she who has now become more widespread. The main difference of this modification was the presence of a German air-cooled engine, which made it possible to increase the power and speed indicators of the loader.

Specifications

PUM-500 has medium dimensions. The length of the equipment is 3400 mm, height – 1565 mm, width – 2260 mm. The weight of the loader, taking into account the bucket attachment, is 2760 kg. The equipment is equipped with an economical 30-horsepower engine with a specific fuel consumption of 258 g/kW. at one o'clock. The fuel tank of the PUM-500 holds 46 liters.

Other characteristics of the loader:

• load capacity – 500 kg;
• maximum traction force – 12 kN;
• the highest height of unloading from a bucket is 1900 mm;
• maximum speed – 9 km/h;
• wheelbase – 928 mm; track – 1300 mm.

PUM-800

designed for mechanization of loading and unloading work with soil of categories I-IV, with bulk and small-sized materials, both in normal and cramped conditions, transport and storage work with piece cargo, special work (drilling wells, clearing roads of dirt and snow , sidewalks). The loader is operated in areas with a temperate climate in the temperature range from -30C to +40C.

The design of all elements of the operator's cabin is made taking into account ergonomic requirements: a wide, comfortable door, upholstery made of sound-absorbing material, which creates comfortable working conditions. The large glass area provides a comfortable view. Optimal placement of controls and instruments increases productivity and guarantees ease of use.

The accessibility of all components and their thoughtful design makes it easy to carry out maintenance, repair and washing of the PUM-800 in any workshop.

Environmental parameters fully comply with European standards. The wheel formula with low ground pressure allows the PUM-800 to be used both indoors and on city streets and in park areas.

From a wide range of special attachments, the customer can create a set that best suits his requirements. The design of the loader ensures quick and easy replacement of one type of equipment with another with a minimum of operations and without the use of any special devices.

Main technical characteristics of PUM-800

Engine

PUM-500 is equipped with a 4-stroke 2-cylinder diesel engine model “D120-10” with air cooling. This motor is a product of the Vladimir Motor and Tractor Plant. Its main difference is its increased service life, high efficiency and efficiency. The cylinders in the unit are arranged in two rows and vertically. The engine is started using an electric starter.

Engine parameters "D120-10":

• working volume – 2.08 l;
• rated power - 22.1 (30) kW (hp);
• rotation speed – 2000 rpm;
• cylinder diameter – 105 mm.

Later versions of the PUM-500 are equipped with a 4-stroke 2-cylinder diesel engine Hatz 2M41 (Germany). The German unit is characterized by high quality, durability and reliability and has a huge service life. The engine functions perfectly even in difficult weather conditions.

Hatz 2M41 motor parameters:

• rated power – 23.7 kW;
• rotation speed – 2000 rpm;

Device

The system for controlling the working parts of the loader has an open design and operates under pressure (up to 16 MPa). The running hydraulic system used on the PUM-500 is also of the open type. However, the operating pressure here is slightly higher (up to 28 MPa). To operate the internal electrical network, two 3ST-155EM batteries are used.

When performing operations using a hydraulic system, the working elements of the Beaver can be adjusted. The running gear control system is made in accordance with the principle of hydromechanical action.

The working units and mechanical connections of the PUM-500 are located as conveniently as possible, which helps to minimize difficulties when servicing the loader. The loader is equipped with wide wheel joints that provide low ground pressure. The versatility of the PUM-500 is achieved due to the possibility of equipping it with various types of working equipment. At the same time, changing it during operation will not be difficult, because this model with a variety of interchangeable accessories can easily replace several types of equipment.

The following attachments are used for PUM-500:

• fork grip;
• rotary snow blower;
• cleaning brush;
• road brush;
• compressor unit;
• excavator equipment;
• mounted forks;
• snow plow;
• bucket with teeth;
• concrete mixer;
• hanging hook;
• set of tracks;
• pumping unit;
• hydraulic drill

The loader cabin is upholstered with material that highly absorbs extraneous sounds, and is equipped with a wide and high door. The large glass cabin provides the driver with maximum control over operations and movement.

Controlling the PUM-500 does not require specialized skills and has an extremely simple design. Any driver with driving skills can operate this loader. True, even for the PUM-500, familiarization with the capabilities and technical parameters of the equipment and a short internship are mandatory.

Device Features

The AMZhK-8 minitractor has several significant features, among which it is necessary to highlight:

1. High versatility of technology. This is due to the possibility of using a large number of various additional attachments. The mini-tractor can use both branded mounted units and some types that were originally designed to work with walk-behind tractors.
2. The manufacturer has applied a lot of technical developments, which are often used even in current modern models of similar equipment, both domestic and imported. This explains the increased reliability.

But besides these main advantages, this model may well be distinguished by simple maintenance, high maintainability, and the unification of many elements with modern machines of the same power indicators and purpose. Currently, equipment is often replaced with a UD-2 power unit. This is explained by the fact that every year it is becoming more and more difficult to find spare parts for the original engine, since along with the cessation of mass production, the plant also stopped producing parts.

In general, this model has potential, even quite a lot, but the manufacturer was never able to realize all the possibilities due to the difficult economic situation.

Important Design features of common tow trucks with partial loading of a vehicle

Reliability

In the manufacture of all elements included in the design of the AMZhK-8 minitractor, the manufacturer used exclusively high-quality materials, which made it possible to achieve increased reliability and a significantly increased service life. This model is absolutely not afraid of harsh weather and climatic conditions, since the equipment fully retains its serviceability and performance at any ambient temperature.

But, despite good reliability indicators, the model has a very problematic element, which the manufacturer was never able to improve. This is the clutch mechanism, which often forced owners to stop working due to malfunctions. Also, sometimes the ignition system failed, which made starting the engine very problematic. The standard magneto is perhaps the only element of the power plant that is not made of the best quality. However, these problems were often solved by completely replacing elements from other models. If the mini-tractor is in good technical condition and with some modifications, then it can last for a very long time.

Repair features

In terms of repairs and all maintenance, the AMZHK-8 mini-tractor turned out to be a pretty successful model. As described earlier, many tractor parts can be replaced with parts from other models of mini tractors. But it should be emphasized that not every element was suitable. They were selected taking into account the traction class of the equipment, power indicators, as well as the purpose of the model. Of course, this was not always done, since at the beginning and in the middle of mass production the plant supplied a sufficient number of components, which, by the way, had a fairly affordable price at that time. Due to the stoppage of production, all spare parts were almost completely gone from the markets, but it was still possible to find something, although it was very problematic. The most popular way to improve equipment, both in terms of performance and in terms of maintenance, was considered to be the complete replacement of the standard engine with a UD-2 unit, which was installed on some walk-behind tractors. In some respects, this unit surpasses even a standard engine, and spare parts can still be found without any difficulty.