Motoblock "Ural": technical characteristics

Motoblock Ural with UMP 5V engine

A feature of the Ural walk-behind tractor model with an UMZ 5V engine is the ability to process clay and other heavy soils without losing efficiency. In combination with the ability to work in almost any climatic conditions and maintainability literally on the go - this made the model one of the most popular among domestic gardeners.

The unit belongs to the uniaxial category. Its track is quite wide, but it can be easily adjusted for operational needs. You can set the required value, both based on the characteristics of the soil and the work process. The package includes a 1.5 liter oil tank.

The main purpose of such a motor-cultivator is to cultivate a land plot with the aim of further planting selected crops on it. Such work as cargo transportation, haymaking, garbage and snow removal is possible only after the installation of attachments. At the same time, there is no shortage of the latter's models.

General technical characteristics of the Urals UMP-5V:

1. weight - 120 kilograms;
2. air cooling of the motor;
3. 82mm cylinder;
4. gasoline engine, 5 horsepower;
5. fuel tank with a volume of 6 liters.

The rather large dimensions and massiveness of the car in the eyes of many are its main drawback. Because of this, it is quite difficult to transport it over long distances. Despite the fact that it is suitable only for processing medium areas. An important disadvantage is the noise, which requires the use of ear protectors.

How to operate

The maintenance manual for the Ural motoblocks of the UMP and UMB series is not much different from the operating instructions for any other similar unit, and in many respects is even simpler than them. And first of all, the device is prepared for operation. For preparation, several extremely simple and universal actions are performed:

• conduct a general inspection of the walk-behind tractor;
• check for fuel or oil leaks;
• set the gearbox to neutral;
• measure the levels of fuel and oil in the respective tanks;
• if necessary, add working fluids;
• check the operation of the engine by turning it on.

Ural motoblocks have the greatest maneuverability in comparison with their competitors

If no problems were identified at the preparatory stage, work begins. For what:

1. switch the engine to low speed;
2. turn off the clutch mechanism;
3. include the required speed on the gearbox;
4. release the clutch release lever, which leads to an increase in speed and the start of movement.

But before starting the permanent operation of the unit, it is run-in. Thanks to this procedure, you can significantly extend the life of the Ural cultivator. It is carried out not only immediately after purchasing the device, but also after any prolonged downtime.

For proper running-in, you must:

• Start the engine at idle speed. While the gearbox must be in neutral.
• The unit operates in a similar mode for the first five hours, without load.
• After their completion, the device is loaded at half the power and so it works for the next 25 hours.
• Over the next 30 hours, the owner gradually increases the load on the car until it reaches its maximum.

Description

Motoblocks Favorite are manufactured at JSC "Plant named after Degtyarev ". This is one of the leading enterprises in Russia for the production of tillage equipment. Its products are distinguished by the quality of assembly, low price (since domestic parts are used) and long service life.

In total, there are several modifications in the Favorite motoblock line. Let's take a closer look at each of them.

Motoblock Favorite MB 1

This is a representative of the light class of motoblocks. Its weight is only 67 kg.

Motoblock Favorite MB 1

Motoblock Favorit 1 is equipped with a 7 horsepower ZiD gasoline engine.

Average fuel consumption is 1.3 liters per hour of operation.

The gearbox has 3 positions: 2 for driving forward and one for driving backward.

Motoblock ZiD 1 is designed for processing soft soils and care for agricultural crops.

Motoblock Favorite MB 3

It is also a lightweight walk-behind tractor, but more advanced.

This unit is powered by a Briggs & Stratton INTEK 6.5HP gasoline engine.

Motoblock Favorite MB 3

The weight of the Favorit 3 walk-behind tractor is 73 kg.

There are 6 speeds (4 forward, 2 reverse).

Fuel consumption is similar to Favorit 1 - 1.3 liters per hour of intensive work.

Motoblock Favorite MB 4

This model is equipped with a Lifan four-stroke gasoline engine, which is analogous to the Honda GX-220.

The weight of the Favorit MB 4 walk-behind tractor is 73 kg.

Motoblock Favorite MB 4

The gearbox has 6 speeds (4 forward and 2 reverse).

Fuel consumption is 1.5 liters per hour of operation.

Motoblock Favorite MB 5

The set of this machine includes axle shafts with different diameters.

In order to achieve optimal speed, a gearbox is used, which works with a belt drive in a sparing mode.

Motoblock Favorite MB 5

Large pneumatic wheels allow you to move on any surface.

The ground clearance is 15 cm.

Motoblocks Favorite MB 5 is produced with several engines: ZiD (7.0 hp), Subaru Robin - EX21 (7 hp), Honda - GX160 (5.5 hp), Briggs & Stratton - Vanguard 6HP (6 hp). with.).

Description

The description of the Ural Patriot walk-behind tractor should start with the fact that this machine was assembled by a defense enterprise from Bashkiria called JSC TsMPO. This is one of the best examples of the conversion of military production to civilian rails.

Motoblocks Ural have a low price and high quality

The walk-behind tractor has gained its popularity due to its ease of operation and high maintainability. This car can be repaired on the go, and there are no problems with access to spare parts.

The main features of the Urals:

• cultivate plots with an area of ​​up to a hectare;
• the possibilities are not limited only to soil processing - it is able to remove snow and transport goods using the proper attachments;
• the transmission of the device is equipped with four gears;
• due to a maximum speed of up to 15 kilometers per hour, it is well suited for transporting goods in conditions of poor or absent roads;
• has increased stability due to the width of the wheelbase;
• it is allowed to adjust the track based on the operating conditions, which significantly increases the efficiency of the unit.

In this video, we will review the Ural walk-behind tractor:

Ural with the UMZ-5V engine

The engine of the Ural UMZ-5V walk-behind tractor is a 4-stroke 1-cylinder petrol unit with a volume of 475 cm³. The motor was originally designed for use on self-propelled agricultural machinery and stationary installations. The power unit develops a power of 4.5 liters. with. at 2000 rpm. The plant allows for a short-term increase in power up to 5 liters. with. by increasing the speed.

The engine is equipped with an air cooling system. A fan is used to cool the engine and blows air into a shroud around the cylinder and head. When operating a walk-behind tractor, it is required to regularly inspect and clean the cooling fins from dust and oil. Accumulated dust impairs heat transfer and causes local overheating, which leads to increased engine wear.

The motor is equipped with an automatic speed controller. For this, a centrifugal mechanism is used, which does not allow a rotational speed of more than 2350 rpm.When the speed is exceeded, the throttle valve is displaced, which leads to a drop in the speed. The engine manufacturer prohibits self-adjusting the speed limiter and its use for speed control.

The gas distribution system consists of 2 bottom valves. Because of this, the motor has a low compression ratio of 6 units. The engine uses automobile gasoline A-76 (A-80) as fuel. The fuel supply is located in a tank located above the engine carburetor, the fluid supply is gravity. The fuel supply in the tank is 6 liters, which provides an operating time of up to 4-4.5 hours. The operating time depends on the condition of the engine and the nature of the tasks being performed.

The engine of the Ural walk-behind tractor is equipped with a 2-speed gearbox with crawler gears. The first speed reduces the rotational speed by 6 times and is used to perform work with a high coefficient of resistance (for example, plowing virgin soil). The second speed reduces the revolutions by 2.91 times and is used to operate the product with a trailer or when plowing soft soil. Switching the speeds of the UMB-K Ural walk-behind tractor according to the instructions is performed on the idle engine.

The engine is started by a cord that is wound around the flywheel. Before starting, it is required to set the crankshaft to the end of compression position. The engine can be started in 1 or 2 gears of the geared motor.

Looking for garden equipment and tools? Crawler Module For Motoblock for home. Review of garden tools and equipment, reviews on the site:.

The output shaft of the engine is equipped with a 2-strand pulley designed to transmit torque to the auxiliary gearbox and to drive the attachment. On the fan side, there is a second pulley used to drive attachments that require an increased speed of rotation of the working parts. The clutch mechanism consists of belts and tension rollers.

In the transmission crankcase of a walk-behind tractor with an UMZ-5V engine, according to the repair instructions, transmission oil in the amount of 1.5 liters is filled. The filling of the substance is carried out through a hole closed with a plastic stopper.

The standard set of attachments for the walk-behind tractor included a cultivator. For the transportation of goods weighing up to 350 kg, a 2-wheel TOP-350 / 350M trolley was used. When using a single-body plow, an adapter is required to be attached to the frame. The use of the plow is allowed in conjunction with metal wheels equipped with grousers. A mounted potato digger is used in conjunction with the plow.

Ignition for walk-behind tractor

The engine ignition system of the walk-behind tractor ensures timely ignition of the combustible-air mixture in the cylinder. At maximum compression, a spark forms on the spark plug, which ignites the mixture.

For a walk-behind tractor engine, the device that generates a spark is a magneto. A magnet of constant polarity rotates in a coil, creating an EMF for the spark impulse. The energy storage device is a high-voltage coil or a capacitive capacitor.

Contact ignition of the walk-behind tractor

In contact systems, an impulse is formed when the contacts of the distributor break, which provides sparking on the candle at the moment the mixture is compressed.

The disadvantage of such a system is the mechanical wear of constantly moving parts and contacts, which affects the stability and quality of the motor. The problem is solved by timely adjustment and tuning of the ignition.

In non-contact devices, pulses are created by electronic switches based on a signal from a special sensor, which detects that the piston in the cylinder reaches the top dead center. There is no dependence of the spark quality on the state of the contact groups.

User manual

The instruction manual for the Ural walk-behind tractor consists in performing several easy steps.

First you need to prepare the walk-behind tractor for work:

1. Inspect the machine, check for oil or fuel leaks;
2. Place the transmission in neutral;
3. Measure the oil and fuel level in the tank and top up if necessary;
4. Start the engine.

To implement the start of the movement, you should perform the following steps:

1. Switch the motor to low speed;
2. Disengage the clutch mechanism and engage the gear;
3. Release the clutch release lever and increase the speed;
4. Start driving.

Service features

A weighty argument in favor of purchasing the Ural UMZ-5V walk-behind tractor is not only its efficient and reliable engine, but also the ability to use gasoline with any octane number.

UMP engine diagram

Since in winter, due to severe frosts, the consistency of the oil can thicken, it is advisable to use it in accordance with the season. It is required to fill in oil as much as indicated in the instructions.

Running in a walk-behind tractor

An important point for extending the life of the engine is running-in, thanks to which you can not only identify possible problems, but also prepare the walk-behind tractor. It is recommended to carry out break-in after purchase and after prolonged downtime.

The procedure is carried out as follows:

1. With the gearbox in neutral, start the engine at idle speed. You can work in this mode for 5 hours without loading the walk-behind tractor.
2. For the next 25 hours, it is allowed to use a walk-behind tractor at half its power.
3. For the next 30 hours, the device should be run in by increasing the load.
4. During running-in it is necessary to adjust the tension of the belts.

Major malfunctions

The following is a list of possible malfunctions that can be eliminated by yourself:

• No forward or reverse. This can happen due to a broken front / rear belt or due to insufficient tension. It is required to check the belts and the operation of the gearbox.
• Lamination of the V-belt transmission. Only a complete belt replacement can solve this malfunction.
• An oil leak was detected through the gearbox connector. Tighten the bolts and check the integrity of the gasket. If it is deformed, replace it.
• Oil leaks along sprocket axles and output shaft seals. This happens if more oil is poured than necessary or if the seals are destroyed, and the latter is removed in specialized workshops.
• Starts badly. Check reducer valve.
• The spark is gone. It can disappear due to irregular maintenance. Dirt enters the spark plug cap, accumulates there, which, accordingly, leads to engine malfunctions. This malfunction, as a rule, applies only to single-cylinder engines.

User manual

The work of each new owner should begin with familiarization with the instruction manual. This document describes the sequence of assembly, running-in, operation, maintenance and conservation of the Ural walk-behind tractor.

First start-up and break-in sequence

1. The correct start of work with the Ural walk-behind tractor is the key to its long-term use.
2. The assembly of the device should be carried out in accordance with the recommendations of the user manual.
3. Then you need to add fuel, lubricant and run in.
4. During running-in, it is recommended to use a walk-behind tractor with half the maximum power. When shipped from the factory, the motor parts are not yet lubricated and there is a lot of friction. So that this does not cause the walk-behind tractor to fail, the first 8 hours of operation should be worked out in a gentle mode.
5. At the end of this period, the oil must be changed.

Service

A distinctive feature of the design of Ural motoblocks is ease of maintenance.

Check the following before each ride:

1. Reliability of fastening of all parts and assemblies of the walk-behind tractor, if they are untwisted, then they should be tightened;
2. The condition of the wiring. It is strictly forbidden to start operation with bare wires;
3. The condition of the V-belt transmission, it is impossible to work with stratified belts;
4. Fastening of attachments;
5. No oil and gasoline leaks.

The engine oil should be changed every 50 hours. For this, it is recommended to fill with SAE 10W-40 lubricant.

The gearbox oil must be changed after 120 operating hours. It is recommended to fill in Tap-15 as fresh lubricant.

Engines of the Ural walk-behind tractor are unpretentious in terms of fuel quality. For their work, you can use AI-80 gasoline. But at the same time, it must be clean, otherwise the fuel system will clog.

Correction of major faults and repairs

Each owner of Ural walk-behind tractors should be familiar with the ways of correcting the main malfunctions that arise during work on this equipment.

Valve clearance adjustment

One of the most common reasons that the Ural walk-behind tractor does not start is the untimely supply of the ignition spark. This is due to a violation of the valve clearance due to excessive loading or wear of parts.

Contact ignition of the walk-behind tractor

In order to adjust it, you must perform the following steps:

1. Loosen the nut with a screwdriver, and place the blade under the valve;
2. Rotate the flywheel and adjust the valve's free travel (it should turn easily, but in its lowest position, fit snugly against the blade);
3. Lock the position by tightening the nut.

1. Check the presence of fuel and oil (top up if necessary);
2. The ignition spark has disappeared or the system malfunctioned (you should check it completely);
3. The engine may not start due to an incorrect setting of the fuel mixture in the carburetor (it is necessary to adjust the fuel and air supply);
4. The fuel filter or air filter could be clogged, because of this, fuel does not enter the carburetor (it should be cleaned).

Repair and adjustment, adjustment of revolutions

Any walk-behind tractor will sooner or later expect engine repairs, let it be Cayman, Patriot, Texas, Foreman, Viking, Forza or some other. The procedure for its disassembly and troubleshooting is simple and does not require any special tools.

Engine repair

It should be noted that the manufacturer does not indicate specific wear limits for troubleshooting any engine components, therefore the dimensions given below are indicated by analogy with other four-stroke air-cooled engines:

• Drain the oil from the crankcase and the gearbox (if installed) by removing the drain plugs and the remaining fuel from the gas tank.
• Remove the fuel tank, muffler and air filter.
• Disconnect the carburetor attached to the cylinder head with two pins.
• Remove the recoil starter mechanism and fan shroud.
• Having fixed the flywheel with a handy tool so as not to damage the fan blades, unscrew the nut that secures it.
• After that, use a three-armed universal puller to press the flywheel off the landing cone.
• If the reason for the disassembly was poor starting and reduced engine power, check if the keyway is broken, since in this case the flywheel will shift and the ignition timing determined by the magnetic mark on it will change.
• Remove the ignition coil and lighting coil, if fitted on the engine.
• Having unscrewed the valve cover mounting bolts, unscrew the four cylinder head mounting bolts located under this cover, and remove the head. To check the tightness of the valves, turn the head upside down with the combustion chamber and fill it with kerosene.
• If kerosene does not appear in the inlet or outlet channel of the head within a minute, the tightness of the valves can be considered satisfactory, otherwise they must be rubbed onto the seats with an abrasive paste or (if burnout is detected) replaced.
• On models equipped with a gearbox, remove its cover and remove the output shaft, then press the drive gear or sprocket from the crankshaft (depending on the type of gearbox). Replace gears with noticeable tooth work.
• Unscrew the bolts holding the rear cover around the perimeter and remove it, after which you can remove the camshaft from the crankcase.
• Having thus freed up space in the crankcase, unscrew the bolts connecting the lower connecting rod cover to its body, remove the cover and the crankshaft.
• Push the piston together with the connecting rod into the crankcase.

If you find any play in the bearings, replace them. Also, since the repair dimensions of the parts are not provided, they are replaced with new ones:

• Connecting rod: with increased to a noticeable radial play on the crankshaft neck;
• Crankshaft: in case of seizure on the connecting rod journal;
• Crankcase: in case of significant (more than 0.1 mm) wear of the cylinder mirror in the greatest place;
• Piston: in case of mechanical damage (chips, scuffing due to overheating);
• Piston rings: with an increase in the gap in the joint over 0.2 mm, if the cylinder mirror itself does not have a depletion that reaches the rejection limit, as well as with a noticeable burnout of engine oil.

Before reassembling, lubricate all rubbing parts with clean engine oil, and clean the carbon-covered surfaces of the combustion chamber and piston crown in order to reduce the heat load in these places. Motor assembly is carried out in the reverse order of assembly.

When installing the camshaft, be sure to align the mark on its gear with the same mark on the crankshaft gear.

Cylinder head

Pull the cylinder head bolts evenly crosswise in two passes, the final torque should be 24 N * m. The flywheel nut is pulled to a torque of 70 N * m, and the connecting rod bolts - 12 N * m.

After assembling the engine, as well as regularly during operation (every 300 operating hours), it is necessary to adjust the valve clearances. Order of operations:

Set the piston to the top dead center of the compression stroke (since there are no marks on the flywheel, check this with a thin object inserted into the spark plug hole)

It is important not to confuse compression TDC with exhaust TDC - valves must be closed!
After loosening the lock nut, rotate the nut in the middle of the rocker arm to adjust the clearance for the corresponding valve, and then secure the lock nut. The gap, set with a flat dipstick, should be 0.15 mm at the inlet valve and 0.2 mm at the outlet.
Having turned the crankshaft exactly two turns, re-check the clearances - their deviation from the established ones may mean a large play of the camshaft in the bearings.