Removing the engine from the Bosch lawn mower. How to remove a pulley on a trimmer

The knife turned off

Signs: poorly cuts grass. After the mowing the ends of the grass, the sung, filamentary ends turn yellow.

Elimination of the malfunction: turn the mower and sharpen the knife. If there are nozzle on the knife, or it is very dull, it is necessary to unscrew the nut, remove the knife. So it is more convenient and faster to sharpen it. Often the nut acidifies and unscrews it is not easy. In this case, drip a little WD-40 or a solvent of rust and wait 15-20 minutes. Try again. For the convenience of unscrewing, you can create an emphasis for a knife: in the plastic bottom there are holes into which you can insert a screwdriver, it will serve as an emphasis.

Overheating of the engine

Signs: The mower works and turns off. The engine overheating sensor is triggered. Let the mowing engine rest for a few hours. Move to the shadow and turn off the network.

Signs: The sound of a mowing room has changed.

It is possible to eliminate this malfunction only by replacing bearings. Most often, the upper engine support bearing and the belt tension roller come out of the system. Upper bearing. 608 you can buy:

Replacing the upper bearing

For repair, we will need: screwdrivers (slotted, cross). The dismantling of the failed part is carried out as follows:

• unscrew 2 self.tapping screws (with a cross blade) on the top cover of the mowing, raise the lid;
• Disconnect the wires going to the engine;
• unscrew 4 screws;
• We remove the springs from the magnets and slightly move them out as shown in the photo;
• We substitute the wooder to the axis and begin to push the bearing, displacing it closer to the end of the engine axis;
• When the bearing is removed, it is necessary to wipe the axis and slightly grease it with a lithol or any other similar lubricant;
• We put another bearing, do not think that it should easily sit in place, it will have to be pressed;
• Pick up the pipe of the desired diameter. It is important that the tube should be slightly larger than the axis, but at the same time resting only on the sleeve closest to the axis, otherwise the bearing can be damaged. Put the phone and gradually, not very tapping, install the bearing in place.

Bearings wear out faster due to dust, sand and dirt. Often a protective red cover of thin plastic bursts. For replacement, a box from a photophone is ideal. And remember that any bearing of any lubricant. The lid will not save from dirt, we recommend that the upper part be treated with thick lubricants, then the dust will settle on it.

The belt tension roller is slightly more complicated: the part is sold in the collection (a video with a bearing, a bracket and a spring). You can order in online stores of spare parts Bosch. Request for the search engine: spare parts Bosch Rotak 32 3600h85b00. The belt tensioner is sold under the article F016L68711.

How to replace the Caterpillar fan belt

To replace the fan belt with Caterpillar, you will need the right tools and the pulley pattern. The fan belts wear out over time, stretch or break, which requires replacing the belt. The fan belt is wound on several pulleys that rotate the fan, control the starter and water pump. The fan belt should be replaced if you notice the wear or creak of the belt when the engine is running.

Step 1

Raise the engine access cover to access the fan belt knot.Insert ½ inch jumper into the tension regulator on the generator to reduce the belt tension. Click on the switch to the left and remove the belt from the pulse of the generator when the tension weakens.

Step 2

Loosen, but do not remove the tension regulator above the water pump. Weaken the fastener bolt using a 5/8-inch nest to remove the belt from the water pump. Use the recess by 1/2 inch to access the tension of the water pump in the lower part of the engine.When the bolt is weakened, turn the bracket of the tension roller and remove the belt, moving it around the crankshaft damper.

Step 3

Install a new belt, wrapping it around the water pump and stretch pulley. Insert the jumper into the pulley and put the pressure to tighten the stretch bar, while tightening the bolt with ½ inch nest. Then tighten the water pump tension controller using a 5/8-inch connector.

Step 4

Wind the belt on the fan blades and the crankshaft pulley.Insert ½ inch jumper into the tension regulator and move it to the left. Wrap the belt behind the regulator, under the stretch pulley and above the pulley of the generator.

Remove the ½ inch jumper and let the tension regulator loosen the sagging of the belt. The belt should be correctly installed in the groove of each pulley. Run the engine, and then check the correctness of the alignment, observing the movement of the pulleys and belt.

• Prepare the pulley diagram to make sure the fan belt is installed correctly.
• If you do not have a manufacturer fan belt installation circuit, draw your own circuit before taking off your belt.

Warning

• Do not try to replace the fan belt without appropriate tools and circuit. Incorrect installation can lead to damage to pulleys, fan blades and injury.
• Always put on your goggles.
• Do not allow long hair, sleeves and other clothes on pulleys and belts during engine operation.This can lead to serious injuries if your hair or clothing hooks at the pulleys.

Generator belt: when to change and why

First of all, before replacing the generator belt, it is necessary to determine exactly that the indicated element needs to be replaced. To begin with, it is better to change such a belt every 5 years or 80-100 thousand by time and run. run regardless of the strap. During operation, the belt must be periodically checked every 20-30 thousand. km.

At the initial stage of checks, attention should be paid to the signs of belt wear. For example, a characteristic whistle will indicate the need for an unscheduled audit during the operation of the internal combustion engine, which is localized in the drive of the hinged units

If it whistles only periodically and in wet weather, this is not a cause for severe anxiety.

However, if the specified whistle is constant, this indicates the problem. As a rule, the worn belt of the generator whistles “on the cold” and “hot”, under load and without. Extraneous noise also appears with a growing load on the electric network of the car. In such a situation, the whistle indicates that the generator belt is at least not enough stretch.

To check the belt tension, press the thumb to the middle. If the belt bend 2-3 mm, this is normal. If it bends 5 mm or more, first you need to try it to tighten it with such an opportunity.

If it is not possible to pull it up, it is mistakenly believed that this problem is not serious, since often there is a systematic non.accommodation of the battery precisely because of the stretched and slipping belt. In turn, this happens as a result of poor operation of the generator itself as a result of problems with its drive. Sooner or later, the battery will be strongly discharged, which will not allow the ICE to launch.

Another constant whistle indirectly indicates that the risks of the belt break off are increasing. At the same time, it may even be dangerous for a car with the GUR if the cliff occurs on the move. The fact is that the hydraulic pump pump will stop working and for turning the wheels you will need to make a great effort on the steering wheel. At high speeds, the driver may simply not navigate and not cope with the management.

It is also necessary to replace when it is clear during a visual examination that the belt was highly sagged and it is no longer possible to pull it, obvious signs of wear in the form of cracks, strata, etc. are visible.P. It is better to replace the belt when technical fluids or oils hit it.

Remember, even when the element is relatively new, visually whole and has no defects, the hit of technical fluids can lead to the rapid destruction of the rubber products. As a result, the belt can spread, stretch or break at the most inopportune moment.

Mechanical lawn mower Bosch AHM 30. design features of the unit

This model popular among novice farmers is in high demand due to ease of use and maintenance. The design of the lawn mower consists of two components. placed in a half.open case of a cutting element and an ergonomic handle. The knife stipulated in the configuration of the knife reinforced with elements made of hardened steel, which significantly extends the terms of its use.

The factory parameters of the lawn mower include:

• adjustment of the height of the lawn haircut. in 3 positions;
• The band height of the grass is 1.2–4 cm;
• The width of the captured strip lawns. 30 cm:
• mass. 6.4 kg.

The cut of the grass with this Bosch lawn is carried out through 4 cutting knives. The lawn haircut is performed according to the principle of scissors. while the knives begin to move as a result of the effort created by the wheels.

Small dimensions make this model from Bosch as maneuverable and effective in small areas. The recommended area of ​​processing by the model is 200 m2.

Removing the descents

If the knife has not sharpened for a long time, excited chips will be likely to appear on it with a high probability. They need to get rid of them, withdrawing the edge of the blade at an uniform angle along the entire length of the cutting area

Please note that there may be several edges on each side, in this case, several cutting planes form a lawn mower

Lugus knives have unilateral sharpening, the descent of which is usually turned upside down. To derive the descent at the right angle, you should use an electric sharpener with a carborne stone, and in the absence of such a small file

It is very important to remove metal evenly from both blades. Therefore, keep the same pressure and at least approximately count the number of passages of the sharpener

Small deviations of the angle of sharpening are not critical, but the smoother the descents will be displayed, the more the resource of the knife will be. When deriving the shape of the blade, it always moves to the grain in order to avoid the formation of large burrs and mix. You should not use a corner grinder for pre.sharpening. overheating can worsen the quality of the metal. However, you can install a petal or plate disk for sandpaper on an angular grinder.

Typical malfunctions and repair

Despite the high quality of production and assembly, Bosch lawn mowers, like any equipment, still periodically fail, and they also need repairs to eliminate the problems that have arisen.

For example, the unit may not turn on the engine. The reason is that the cable is damaged, or the height of the grass cannot be able to mow this model. If the engine works with interruptions, it may be damaged by internal conductive veins. If the mowing of the grass occurs unevenly, most likely, the matter in the gloomy knife, or it is established incorrectly.

When wiping the leaves of grass on the axis of the knife, it may not rotate, despite the proper engine, the same thing can happen as a result of damage to the impeller of the cutting part. Due to the loosening fasteners or their failure, an extraneous noise occurs in the engine. In this case, it is necessary to disassemble it and replace the worn parts.

Bosch mowls mowls may not spin the wheels. This is due to the wear of the gearbox, drive gear or bearing. To eliminate this malfunction, you should change the worn part, as well as adjust the tension of the drive or the course control cable.

On a note. It is advisable to repair all breakdowns in specialized Bosch technical centers, especially if the warranty period has not expired yet. For the prevention of malfunctions and pollution of these garden units, it is necessary to clean the wheels and cutting node using the brush after each use.

Since the grass on the lawns is constantly growing, to maintain them in a decent state, it must be periodically trimmed. A whole line of various lawn mowers from a well.known German manufacturer. Bosch can help gardeners in this work. All of them are distinguished by quality and reliability, each owner can choose the one that is suitable for his site.

How to remove a knife from a lawn mower

Before proceeding with a partial disassembly of the lawn mower, you need to protect yourself and it. If the device with an electric drive is enough to turn off the network, then gasoline lawn mowers require preliminary preparation. First of all, you need to remove the cap from the spark plug. The following should be excluded fuel leaks, that is, either drain the tank, or put a hermetic rubber membrane under the lid and block the fuel tap. The lawn mower should be turned over only towards the handle, unless otherwise specified in the instructions for operation. Before turning the law mower, do not forget to squeeze the hose of the exhaust gas exhaust so as not to pour oil.

The lawn mowers use knives of different configurations. In the simplest case, this is an ordinary two.lobed plate of complex shape, however, the knife can be composite. the upper blade is designed to mulch the mowed grass. There are also four.lobed knives, which can be both composite and at the general base.

The knife can be mounted either with one bolt in the center through a style washer, or two bolts with landing on a central hole or pin. In any case, the thread on the bolts is right, respectively, you need to unscrew counterclockwise. To block the shaft from rotation, substitute a bar rested in the ground under a knife. It is advisable to remember or outline the position of the blade (I), so as not to confuse anything when reverse assembly. Temporarily make the twisted bolts in free holes.

Machine

The machine will help to cope with the work quickly and, without making great efforts. The main thing in this matter is not to achieve too sharp edges. If you sharpen them so thin as the razor, then the risk of chips and breaks is great.

During operation, it is important to adhere to the right angle and remove the metal from the blades in the same amount. The machine does not get rid of the editing of the edges with sandpaper

Description of the model

Similarly, batteries of low.power models, an electric shovel effectively cuts grass on small lawns. Advantages of the Bosch lawn mower:

• Equipment with a powerful PowerDrive electric motor allows you to work for a long time in difficult operating conditions.
• The power of the lawn mower of 1.2 kW is enough to mow highly overgrown grass and thick stems of weeds.
• The height of the lawn haircut is adjustable within 20-60 mm in 3 positions. The width of the capture during the span is 32 cm.
• Thanks to the guide elements, the lawn mower is convenient to cut the grass close to the curbs, other fences.
• The design of the Bosch 32 lawn mower allows you to work on surfaces with a complex relief, when moving tilted down and up, which is convenient when the grass near the overpasses, various side branches, all kinds of platforms, all kinds of.
• The mowed grass is carefully assembled in a hard grass collector with a volume of 31 liters, does not spoil the appearance of the lawn.
• Thanks to the ergonomicity of the model, to work with the Bosch Rotak 32 lawn mower is convenient and pleasant.

Features of application

The manufacturer gives detailed recommendations on the proper use of Bosch lawn mower in the operating instructions for the machine: data on the device, safety measures when working with electrical equipment. Owners need to carefully familiarize themselves with information about the unit, master the techniques of work and perform settings.

• Before each use of the lawn mower, the condition of all bolts, nuts, screws, and other moving joints should be checked.
• It must be remembered that after disconnecting the Bosch lawn mower from the network, the cutting tool continues to rotate for some more time.
• It is forbidden to turn on and off the lawn mower without an intermediate break.
• It should be borne in mind that the extension cord, fork and coupling should be waterproof, the extension cord should have a certain cross.section of the wire to ensure safe operation.
• When operating, it is necessary to take into account the load, the condition of the mowing grass and do not overload the engine. Since the motor is equipped with a protective stop function, when overloading or confusing grass in knives, the lawn mower is automatically disconnected.
• All repair work, settings, testing, maintenance of the Bosch lawn mower should be performed with the electric motor turned off.
• With any manipulation near the rotary knife, it is necessary to use dense mittens.

Features of application

The manufacturer gives detailed recommendations on the proper use of Bosch lawn mower in the operating instructions for the machine: data on the device, safety measures when working with electrical equipment. Owners need to carefully familiarize themselves with information about the unit, master the techniques of work and perform settings.

• Before each use of the lawn mower, the condition of all bolts, nuts, screws, and other moving joints should be checked.
• It must be remembered that after disconnecting the Bosch lawn mower from the network, the cutting tool continues to rotate for some more time.
• It is forbidden to turn on and off the lawn mower without an intermediate break.
• It should be borne in mind that the extension cord, fork and coupling should be waterproof, the extension cord should have a certain cross.section of the wire to ensure safe operation.
• When operating, it is necessary to take into account the load, the condition of the mowing grass and do not overload the engine. Since the motor is equipped with a protective stop function, when overloading or confusing grass in knives, the lawn mower is automatically disconnected.
• All repair work, settings, testing, maintenance of the Bosch lawn mower should be performed with the electric motor turned off.
• With any manipulation near the rotary knife, it is necessary to use dense mittens.

Bearing of the bearings

Signs: The sound of a mowing room has changed.

It is possible to eliminate this malfunction only by replacing bearings. Most often, the upper engine support bearing and the belt tension roller come out of the system. Upper bearing. 608 you can buy:

Replacing the upper bearing

For repair, we will need: screwdrivers (slotted, cross). The dismantling of the failed part is carried out as follows:

unscrew 2 self.tapping screws (with a cross blade) on the top cover of the mowing, raise the lid; Disconnect the wires going to the engine; unscrew 4 screws; We remove the springs from the magnets and slightly move them out as shown in the photo; We substitute the wooder to the axis and begin to push the bearing, displacing it closer to the end of the engine axis; When the bearing is removed, it is necessary to wipe the axis and slightly grease it with a lithol or any other similar lubricant; We put another bearing, do not think that it should easily sit in place, it will have to be pressed; Pick up the pipe of the desired diameter

It is important that the tube should be slightly larger than the axis, but at the same time resting only on the sleeve closest to the axis, otherwise the bearing can be damaged. Put the phone and gradually, not very tapping, install the bearing in place.

Bearings wear out faster due to dust, sand and dirt. Often a protective red cover of thin plastic bursts. For replacement, a box from a photophone is ideal. And remember that any bearing of any lubricant. The lid will not save from dirt, we recommend that the upper part be treated with thick lubricants, then the dust will settle on it.

The belt tension roller is slightly more complicated: the part is sold in the collection (a video with a bearing, a bracket and a spring). You can order in online stores of spare parts Bosch. Request for the search engine: spare parts Bosch Rotak 32 3600h85b00. The belt tensioner is sold under the article F016L68711.

Lawn mower. An excellent alternative to a manual spit, which allows you to mow grass easier and faster in various places, including in those where an ordinary braid for grass simply does not rotate. But for comfort and convenience there is a complex modern mechanism that requires constant attention and regular maintenance.

Regardless of the manufacturer, all devices have similar design. Therefore, the repair of a homemade Viking mowing is similar to the repair of other brands: Husqvarna, Calm, Bosch, Gardena, Oleo-Mac. Home.made lawn mower will not be an exception, but the elimination of damage requires basic knowledge. Consider the most common reasons for the failure of the engine and make your own repair of the lawn mower on the spot.

Repair of mechanical parts of lawn mowers of all types

Regardless of the type of engine, the mechanical part of the braid braid includes knives, a device for scattering or storing grass and a transmission mechanism. Most often knives fail or end with fishing line.

Cleaning the mechanical part of the BOSH mower

Restoration of a gas trimmer handle for grass

During the inspection, check the condition of the grass supply channel in the container and, if necessary, clean it. complex mechanical malfunctions require complex tools, special equipment, professional skills, and it is better to trust specialists to eliminate problems.

Building a line in a mower

The device of the element on which the nylon thread is wound is very simple. This element is called a coil. It has two “paths”. the upper and lower. There is a special section between these paths with the inscription. The fishing line for the trimmer is wound on these paths. In advance, it needs to be pulled out through the recess.

To remove the coil without obstacles, it is necessary to unscrew the special button located on the body of the mowal.

Peculiarities Field replacements On the video.

The above block can be made on its own, and this article will tell you how to build a lawmaker from a trimmer for grass using your own hands.

Criteria for choosing knives for garden technology

In the representation of the townsfolk, the cutting elements of such devices should resemble a kitchen knife, but this is completely wrong. First of all, we will decide on its purpose. Unlike fishing line, the blade affects the stems in such a way as not to cut them into small pieces, but to cut them evenly (this does not apply to mulching modifications). In order to do this, they have a kind of shape. a figure with a certain angle of sharpening. You can also find models with a mulching function. cutting vegetation into parts.

On sale there are three main varieties of cutting elements. straight, curly, mulching. The first species differs in a flat surface, as well as rectangular edges. Feature of a curly nozzle. it bends at a certain angle from the center to the edges. The last type has a special shape resembling the English letter Z, while the edges may be present at the edges. It should be noted that the functionality of most nozzles implies mulching, however, in a specialized blade, this function is more pronounced. In almost all such equipment, the edges are curved in one direction. This was done so that the grass is “attracted” to the rotational element, and after pruning is transported in a certain direction, to the compartment for the collection of vegetation. Cars can differ from each other in appearance. They can be lobed, and in the shape of a cutter. Models of the first type can be of three varieties. straight, with rounded faces, with pointed faces. Frasa (disk) models in appearance resemble an asterisk from a bicycle. an even and straight disk from the middle passes to sharp multidirectional edges. There are also modifications with a step transition. each element is located just above the previous. The length of protruding faces can reach several centimeters.

Manufacturers recommend choosing a cutting element of such a size that it is equal to the mowing ability of the device. If you select a smaller product, the mowing effect will differ for the worse, and if more, the device is damaged, or the operator’s injury is possible. The required characteristics can be found in the passport of the lawn mower. According to the recommendations of manufacturers, you need to buy a cutting element of the company that is listed among the permissible. Despite the fact that on the market you can find special adapters that allow you to attach the blade of another manufacturer, not intended for use in this brand, experts do not recommend this to avoid a breakdown of technology.

According to the advice of experts, it is recommended to buy products made of stainless steel. They have increased strength characteristics, as well as resistance to moisture and juice of plants, which will quickly damage the steel product. The minimum hardness indicator on the Rockwell scale is 55 units and above. The worst parameters will lead to the fact that the nozzle will quickly become dull, and will require sharpening. There are also plastic knives. They are considered safer in work, since when it enters the stone, the equipment can fly apart and get into a person. A plastic product due to a softer structure and smaller weight is not able to cause significant damage to the operator.

How to make repair of the lawn mower with your own hands?

Those who have land are very familiar with what struggle is weed.

Especially when it often rains and the grass grows not by the day, but by the hour. Earlier, and sometimes even now, this issue was resolved with the help of a good old braid for grass.

But technologies are not standing still and now in this case, assistants such as electric and gasoline lawn mowers help.

The gasoline mower has several significant advantages over electric, such as mobility and lack of danger of electric shock. But there are many drawbacks, for example: high price, a lot of noise, expensive fuel and significant weight.

Electric mowers are cheaper, easier, work on inexpensive energy, and are not difficult to maintain and repair. These advantages become the main reason for their great popularity among buyers of this type of technique.

But despite the pretty good quality, improper operation and a lot of load, they can disable the device. In such cases, you should not immediately carry the device to the repair shop, but try to find and eliminate the cause of the breakdown yourself. over, as mentioned above, electric lawnmands do not have as many nodes and details as gasoline.

The main thing is to have some tools and faith in yourself. In this article, I will just show you how I did my own repair.

AL-KO, the lawn mower of the company, has serious problems in work, namely: the engine stop without load and its strong overheating, was taken as an example. The motor stops, buzzes and start it again, only repeated pressing the Start button helps. The button has to restart almost every 30 seconds, and with further work and more often.

Of course, you can work, but it is very annoying and gives the feeling that somewhere the problem is. Therefore, I wanted to figure out where?

After the mower was working within an hour, the engine temperature was measured. It was impossible to touch him with a finger. He directly radiated heat. If you continue to pay attention and continue to work on such a mower, an electric motor will inevitably fail.

It is necessary to determine the cause of the motor overheating. To do this, remove the top cover of the case, under which the engine is located and its power chains.

The lid is held on six screws with a hat under a cross screwdriver.

Unscrew these screws and remove the lid. upward.

Having removed it, you can see the impeller, the capacitor, two connectors and the engine itself.

At first glance, no special problems are invisible. The engine winding darkened slightly from the temperature, but so far it is not critical.

To more carefully inspect the capacitor, it is necessary to unscrew the mount and pull it out.

The capacitor of some external damage did not show.

To check it, you need to disconnect the capacitor and feed the engine for a short time. If he did not start and began to buzz, then the capacitor is intact, because the engine was launched with him. Disconnect the power and connect the container connector back to the engine circuit.

Next, try to twist the impeller. It is mounted on the axis of the rotor and rotates rather tight.

And the reason for such severe rotation is a mechanical brake, which for safety stops the engine rotation when the power is turned off.

It looks like a sleeve that moves freely from top to bottom, along the rotor axis.

Когда напряжение на двигатель не подано, эта втулка прижимается верхней частью о крышку, на которой приклеено две резиновые полосы. Thus, the knife is inhibited on the rotor shaft.

When feeding, the brake sleeve under the influence of the magnetic field is drawn to the center of the rotor and provides free move.

With a careful examination, this sleeve with the brake noticed that at the time of turning on the engine, the brake is retracted and gives the shaft free rotation, but after 2-3 seconds it is released again and begins to slow down the motor. This should not be. Hence the stop of the knife during operation and overheating of the engine.

To find out what is the reason for this work, you need to remove and disassemble the engine.

To remove it, first you need to unscrew the knife bolt (cm. Figure below).

Direction of rotation, like a regular bolt, and not with left thread. That is, unscrew it counterclockwise, and tighten the clock.

The head of the bolt is plastic, so using the key, it must be well planted so as not to “lick” the edge.

Adjustment is carried out by the washers put under the sleeve (see. drawings below).

Replacing bearings on an electric motor Gardena Lawn Model. Gardena engine repair (Gardena)

A new removal of pulleys of electric motors of lawn mowers and washing machines, with your own hands

DIY. How to remove the pulley from the engine from the washing machine and not spoil the shaft

Removing the pulley from the engine of the Bosch lawn mower

Replacing bearings on the Bosch Rotak 40 lawnie (attempt to replace bearings)