Angle grinders (grinders) from the INTERSKOL company enjoy a reputation as a reliable tool. However, over time, their parts wear out and may need to be replaced. Repairing INTERSKOL angle grinders is not too complicated, so in some cases you can do it yourself. However for proper repair you need to know the procedure for disassembling INTERSKOL angle grinders USHM-125/700, USHM-125/750, USHM-125/900, USHM-125/1100E and USHM-125/1400EL, have necessary tool and familiarize yourself with the device diagram.
We remind you that disassembling the case outside the service center automatically leads to termination of the warranty. Therefore, if guarantee period has not yet expired, it is better to contact the service center.
Typical design of an angle grinder (angle grinder) 125 mm
The INTERSKOL company is a Russian manufacturer of a variety of power tools. The company's products are popular in our country thanks to affordable prices, good ergonomics, ease of use and ease of maintenance.
The company produces several series of angle grinders, differing in the diameter of the equipment. The series for 125 mm wheels is the most popular (65-70% of sales of all angle grinders). Grinders in this series have different engine power - from 700 to 1400 W. At the same time, structurally these models differ from each other insignificantly.
All models for 125 mm circles are characterized by the following design features:
- The spindle is mounted on 2 rolling bearings;
- The body and handle are made as a single whole, or rather, the back part of the body serves as the handle (with the exception of the UShM-125/1400EL model).
These features set certain requirements to the procedure for disassembling INTERSKOL angle grinders for 125 mm equipment, which will be discussed a little later.
What tool will you need to disassemble a 125 mm angle grinder?
Before you start repairing your angle grinder, you should make sure you have everything you need. It is better not to start repairs without preparing the tools according to the list:
- Set of screwdrivers for straight and Phillips slots;
- Set of open-end wrenches;
- Vise;
- Hammer.
It is also worth making sure that you have liquid to wash off the lubricant, disposable wipes or rags, and grease on hand to lubricate parts.
Repairs must be carried out in a prepared place where there is sufficient lighting. You should not start repairs without a clear understanding of the nature of the malfunction and the mechanism of your own actions. It will be useful to find the assembly diagram and keep it before your eyes. If there is no such diagram, it makes sense to photograph in detail each stage of disassembly, so that later during assembly you can see how this or that part is installed.
It is also worth remembering that any disassembly of the case outside the service center automatically leads to termination of the warranty. Therefore, if the warranty period has not yet expired, it is better to contact the service center.
How to disassemble an angle grinder INTERSKOL 125 mm?
You need to start disassembling the INTERSKOL angle grinder by removing the back cover of the angle grinder body. Remove the screws holding the cover in place. By removing it, you can get to electric brushes, which are placed in special brush holders.
- Remove the brushes and inspect them. If their length is less than 5 mm, it means they have worn out during use and it’s time to replace them with new ones.
- Now you can remove the motor block housing.
- Next you need to unscrew the nut in the gearbox housing and remove the rotor.
- Now you can disconnect the armature and gearbox.
- To remove bearings from the armature, it is better to use special universal pullers.
Assembly is performed in reverse order. But before that, you need to lubricate all the mechanical parts of the machine again. Most experts recommend domestic lubricants, since imported lubricants are not superior in quality, but are much more expensive.
For the gearbox, it is worth choosing lubricants that adhere well to the surface. This characteristic can be assessed by the value of adhesion.
How to repair an angle grinder gearbox?
Most gearbox malfunctions are detected by ear. Noise, unusual sounds, vibrations and beating of the instrument in the hand, excessive heat- these are the signs of a malfunction of this part.
To repair the gearboxes of angle grinders, you need to know the procedure for disassembling this unit. For 125 angle grinders it is as follows:
- Unscrew the four screws, remove the locking washer and the gearbox cover.
- Next you need to separate the spindle from the cover. It is better to use a press for this, but you can knock out the spindle with a hammer.
- Next we knock out the key and remove the bevel gear.
- We remove the driven gears and, after examining them for defects, replace the damaged ones.
We perform assembly in reverse order.
Disassembling and repairing an INTERSKOL 125 mm angle grinder is not a very difficult task if you approach it with sufficient knowledge and the necessary tools.
Angle grinders (grinders) from Interskol are very reliable and durable. They are distinguished by good performance and high reliability. But improper operation of the tool, untimely replacement of carbon brushes, lubricant and bearings leads to premature failure.
You can also repair the Interskol grinder yourself.
To do this, you need to know the structure of the Interskol angle grinder, the assembly diagram, the procedure for performing technological operations when disassembling and assembling the angle grinder. To properly repair the Interskol angle grinder, it is enough to study the proposed diagram and instructions.
Angle grinders from Interskol Lately are becoming increasingly popular not only among professionals, but also among DIY enthusiasts.
Tool design features
The Interskol company is Russian leader for the development, production and sale of various power tools recognized by global manufacturers. Interskol products are distinguished by ergonomics, simplicity and ease of maintenance, environmental friendliness, and increased power.
Interskol grinders are classified by disc diameter: 115,125,150,180,230.
Among those who like to make things with their own hands, Interskol grinders of two classes are especially popular: with a disk diameter of 125 mm and 230 mm.
In the presented classes, several models are produced, differing in power.
In the 125 mm class, 4 (four) Interskol models are produced: angle grinder 125/900, angle grinder 125/1000, angle grinder 125/1100E, angle grinder 125/1400EL.
In the 230 mm class, 10 (ten) Interskol models are produced, differing from each other in power. Grinders Interskol class 230 are produced with a power exceeding 2000 W.
The marking of Interskol angle grinder 230/2300 is deciphered: angular Grinder with a maximum circle diameter of 230 mm, power 2300 W.
For grinders Interskol ushm 125, the driven gears on the spindle are secured using a keyed connection.
Grinders Interskol angle grinder 125 are assembled in one body, which serves as a handle.
Grinders Interskol angle grinders 230 have a convenient rear handle on the back of the body. These are powerful professional machines with a two-handed design. For angle grinders of this class, the driven gears are pressed onto the spindle shaft.
In the proposed repair instructions we will consider diagrams of two classes of angle grinders Interskol: angle grinder 125, angle grinder 230.
Necessary tool for repairing an angle grinder Interskol
It is impossible to repair Interskol angle grinders without a simple, the right tool. A set of screwdrivers, open-end wrenches, a vice, a hammer, and a press will help you repair the mechanical part of the Interskol angle grinder. To repair electrical circuits, you will need a tester. It’s good if you have the opportunity to use an IK-2 type device for windings. From auxiliary materials You will need lubricant, wipes, and cleaning fluid.
To perform high-quality repairs of an angle grinder of the Interskol family, you need to prepare workplace, choose the right lighting. On the floor, in dark room It is impossible to carry out high-quality repairs.
To repair an Interskol angle grinder quickly and correctly, you need a diagram of the angle grinder you are planning to repair.
Malfunctions in angle grinders are divided into mechanical and electrical.
Basic electrical faults of the grinder Interskol
As a rule, the most common cause of failure of an angle grinder is an electrical fault. The main percentage of electrical failures of grinders is the failure of carbon brushes.
Repair of control circuits for angle grinders Interskol
Control circuits for grinders various models slightly different from each other. It all depends on the power of the tool and the availability of innovative developments. Some grinders have a built-in the electronic unit, regulating the smooth start.
Wiring diagram of the control circuits of the angle grinder Interskol ushm 125
In Interskol angle grinders 125 angle grinders, electric brushes pos. 55 are mounted in special brush holders pos. 44, which can only be reached by removing the back cover pos. 51 of the stator housing pos. 42.
After removing the cover, you need to unscrew the screws pos. 50 holding the brush holder housing.
Brush wear is determined by their remaining length. The length of working carbon brushes cannot be less than 5 mm.
Power is supplied via cable pos. 53. At the points where the cable enters the angle grinder and into the plug pos. 53, the cable may break off. The malfunction can be resolved by replacing the entire power cord or the failed part. Twists are not allowed.
The power cable supplies voltage to the switch pos. 41, inserted into the housing at pos. 47. To control the switch button there is a lever pos. 46. By doing Maintenance Blow the switch lever with silicone grease.
Wiring diagram of the control circuits of the angle grinder Interskol ushm 230
Power is supplied via cord pos. 50 to the switch pos. 46, to which the electronic unit pos. 40 and carbon brushes pos. 38 inserted into brush holders pos. 37 are connected. The electrical part of the angle grinder also includes a stator, pos. 32, and a rotor, pos. 27.
Replacing carbon brushes on angle grinders Interskol USHM 230 does not require removing the back cover. It is enough to unscrew the cap of the brush holder pos. 36 and pull out the brush holder with the carbon brush. But you can replace the switch, electronic unit, capacitor pos. 42 only by disassembling the rear handle pos. 44, 45. To do this, you need to unscrew four 4x16 screws, pos. 44.
How to repair the rotor of an angle grinder Interskol
Rotor failure occurs for the following reasons:
- The carbon brushes have worn out or are faulty;
- Short circuit or breakage of windings;
- The lamellas of the armature commutator have worked:
- The rotor bearings are damaged or jammed.
Rotor repair required special knowledge, instruments and equipment. It is preferable to buy a new rotor or send it to a specialized service center for repairs. But remember, it costs money. We recommend it for those who are especially gifted.
Use a puller to remove the bearings from the armature. But you can also use improvised means. For example, a vice, strips of metal, a hammer, a soft metal attachment.
Dismantling bearings from the armature ushm 125
There are two bearings installed on the rotor, pos. 31: the rear one, near the collector, pos. 32.
Bearing size 608Z.
And on the impeller side there is a bearing, pos. 28, size 6000-2 RS. Russian analogue 180100 .
The bearings are removed after removing the rotor from the gearbox housing. To remove the rotor from the gearbox, you need to remove the bevel gear drive, position 26, sitting on the rotor shaft.
To do this, you need to unscrew the M8x3.5 nut, pos. 25, and remove the drive gear Z=12. It is fixed with a key pos. 30. The bearings are removed using a puller.
Dismantling bearings from the armature ushm 230
To remove the bearings from the armature, pos. 27, it is necessary to pull the rotor out of the gearbox housing, pos. 19. Unscrew the M8 nut pos. 20, remove the locking washer pos. 21, remove the drive gear pos. 22. gently rocking, pull the rotor out of the gearbox housing. The bearing will remain in the gear housing. It is closed by a bearing cover, pos. 25, which is attached to the gearbox housing with three M5x8 screws, pos. 26. A bearing of size 6201-2RS is installed in the gearbox housing. Russian analogue 180201 .
On the collector side, bearing pos. 28 is removed using a puller. Bearing size 608RT. Russian analogue 180608 .
Repair of the stator of the grinder Interskol
Repair of the stator of any angle grinder Interskol is carried out after determining the nature of the malfunction. Most often the stator burns out. This occurs due to overheating of the tool. A malfunction of the stator is indicated by involuntary uncontrolled spinning of the rotor of the angle grinder.
To do this, you need to pull it out of the case. The performance of the stator can be checked without removing it from the housing. But this can only be done in specialized workshops. Or if you have an IK-2 short-circuited turns monitoring device. It is possible to determine a break or short circuit in the stator windings without dismantling the stator. The burnt stator is removed, rewound, or a new one is installed instead.
You can rewind a burnt stator yourself.
The rewind algorithm is as follows:
- Cut the damaged winding from one edge in any way;
- You count the number of turns of the winding, determine the direction of its winding, the percentage of filling of the stator core groove, measure the diameter of the wire;
- After removing the burnt winding, clean the core grooves and check the insulation;
- Wind the prepared wire into the prepared grooves required quantity turns of stator windings;
- Solder the ends of the windings, having first put an insulating wire on them;
- Clean traces of impregnation inside and outside the stator housing;
- Check the free movement of the rotor inside the stator.
DIY video of repairing the stator of an angle grinder Interskol
Video: grinder repair burnt out stator
Mechanical malfunctions of the grinder Interskol
From mechanical faults Bulgarians have Interskol weak point the gearbox remains. The gears used in the gearbox wear out over time, the teeth are destroyed, and backlash appears in the connections.
Repair of the grinder gearbox Interskol ushm 125
In order to repair the Interskol angle grinder gearbox, it is necessary to establish the nature of the malfunction. Most mechanical gearbox malfunctions are determined visually or by ear. Large runout of the spindle shaft, jamming or turning of the gears of the gearbox are determined by a simple inspection of the condition of the spindle shaft. Increased noise during operation of the gearbox, uncharacteristic sounds, and overheating can be detected by ear or by touching the housing with your hand.
To disassemble the gearbox, you need to unscrew (4) four M4x14 screws, pos. 11, remove the DU-1000ER locking washers, pos. 12, and pull out the gearbox cover, pos. 13. The mounted spindle, pos. 10, will remain in it. The spindle is mounted in bearing pos. 14. Bearing size 6201-2RZ. Russian analogue 180201.
To press the spindle out of the bearing housing, you need to use a press. But you can carefully knock it out with a hammer. The main thing is not to damage the gear housing cover.
The bevel gear wheel, pos. 16, is held on a keyed connection and secured with a retaining ring, pos. 17. A ball with a diameter of 3 mm is used as a key in the Interskol angle grinder 125/900. If you remove the retaining ring, removing the gear is not too difficult. In other models of angle grinders Interskol USHM 125, a key is used.
Remove the gears and inspect them for licking teeth, destruction or snagging, or any play in the key joint.
Repair of the grinder gearbox Interskol ushm 230
To disassemble the USHM 230 gearbox, you need to remove the cover pos. 6 by unscrewing 4 (four) screws. The spindle, pos. 8, is held in a bearing, pos. 9, pressed into the cover body, pos. 6. Bearing size 6203zz. Russian analogue 180203.
The gear wheel pos. 11 is pressed onto the spindle with tension. To remove it you will need a press. Craftsmen manage to remove it with a hammer, after heating the gear.
Remove the gears and inspect them for licking teeth or destruction.
Repair of grinder Interskol ushm 230
Video: Unscheduled repair of an angle grinder
Assembling an angle grinder Interskol
Assembling an Interskol grinder is no different from assembling grinders of other brands. Serviceable parts and assemblies, free of old grease, are allowed for assembly. Assembly consists of several stages.
How to assemble an angle grinder gearbox Interskol
To assemble the gearbox assembly, it is necessary to assemble the spindle by putting bearings and bevel gears on it.
The gear housing cover pos. 13, bearing pos. 14, bearing caps pos. 15, and bevel gear wheel pos. 16 are put on the spindle pos. 10. The gear is fixed on the spindle keyed connection. In the 125 angle grinder, a ball with a diameter of 3 mm is used as a key. To fix it on the spindle, the gear is fixed with a locking ring, pos. 17. The assembled spindle is inserted into the needle bearing pos. 18. And the needle bearing is pressed into the gearbox housing, pos. 21.
The assembly of the gearbox USHM 230 begins with the assembly of the spindle assembly, pos. 8, onto which the bearing, pos. 9, and the retaining ring, pos. 10, are mounted. The gear wheel, pos. 11, is pressed onto the spindle. The spindle is inserted into the roller bearing pos. 12. Bearing size NK1210.
To facilitate the process of pressing the driven gear, pos. 11, onto the spindle, pos. 8, heat the gear and cool the spindle.
How to assemble an angle grinder Interskol
The assembly algorithm for the Interskol grinder is as follows:
- The stator is inserted into the housing;
- The stator is covered with plastic protection;
- A rotor with a protected rubber bushing on the commutator bearing is inserted into the stator;
- The second end of the rotor is inserted into the gearbox housing;
- The drive gear is mounted on the rotor and secured with a nut with a right-hand thread;
- The gearbox housing is attached to the stator housing with four screws;
- The smooth rotation of the rotor is checked;
- A cover with a driven gear is placed on the gearbox housing;
- Tighten 4 (four) screws securing the gearbox cover;
- The smooth rotation of the tool spindle is checked;
- Carbon brushes are installed;
- The back cover is put on or the handle is assembled;
- A test run of the tool is carried out to check the smooth operation.
According to the given algorithm, all grinders of the Interskol family are collected without exception.
Several features when disassembling and assembling the Interskol grinder:
- For high-quality removal old lubricant from the gearbox housing, it is better to heat the latter with a professional hairdryer until the lubricant becomes liquid and then remove it;
- In some models of Interskol angle grinders, the drive gear is fixed on the shaft with two nuts, one of which is a locking nut S=12;
- Carefully unscrew or tighten the fixing nut of the rotor driven gear in the Interskol angle grinder 115;
- Place lubricant in the gearbox housing that is less than half its volume;
- When disassembling, carefully inspect the condition of the collector lamellas; there should be no signs of burning or worn out tracks.
A few words about lubrication of the Interskol grinder
Before assembling the mechanical components of the grinder Interskol, in mandatory, lubricate parts with the recommended lubricant. On Russian market lubricants Lubricants from foreign and Russian manufacturers are widely represented. Today you can purchase high-quality lubricants domestic manufacturer. They are in no way inferior in quality to their foreign counterparts, but are several times cheaper.
A special lubricant with high adhesion has been developed for grinder gearboxes. Adhesion is the property of a substance to adhere to a lubricated surface.
Video: Interskol UShM-150 grinder repair
Video: Grinder Interskol 180mm Replacing a pair
Video: Angle grinder Interskol USHM-125/900\ grinder Interskol operating experience\ review
Video: Interskol 125/900 disassembly and diagnostics
IN household and in industrial production Often there is a need to cut and grind metal, stone or other products made of hard materials. A very effective power tool for these purposes is the Interskol angle grinder UShM-125/1100E.
What is this tool?
Angle grinder "Interskol" UShM-125/1100E is an electronic device. In everyday life it is often called a grinder and is used for working with iron, stone, concrete and other materials. "Interskol" UShM-125/1100E - angular, using nozzles with a diameter of 125 mm and a power of 1100 W. It is a product of the Russian company Interskol. Working with an angle grinder is not limited to cutting. This electrical device You can also grind and polish the surfaces of products if necessary. Wide multifunctionality in application is possible due to design features and technical capabilities of angle grinders.
Grinder "Interskol" UShM-125/1100E. Design Features
Performing grinding and polishing work on surfaces concrete products often accompanied by copious emissions of dust, which is very undesirable for a power tool. Settling dust negatively affects the service life of any angle grinder. The grinder "Interskol" UShM-125/1100E is assembled in such a way that the dust generated during polishing/grinding does not penetrate inside the mechanism. This is made possible by the direction of the armature impeller, which sends air currents through the front of the gearbox.
In these corner mount the gear is carried out; they are pressed onto the spindle shaft. The entire mechanism of the angle grinder USHM-125/1100E is assembled in one housing, in the rear part of which there is a convenient handle. This grinder is a very convenient and powerful machine designed for professional use. The two-handed design (main handle + additional included) ensures comfort and convenience during operation of this power tool.
What is the grinder equipped with?
"Interskol" UShM-125/1100E has an electronic system that allows you to adjust the speed if necessary (from ten thousand per minute to three). The owner of this power tool can reduce them to the required level without worrying that the power of the grinder will also decrease. This quality, which is possessed by the Interskol grinding machine UShM-125/1100E, is especially appreciated by professional tilers. By lowering the speed, you can easily process glazed tiles and other delicate surfaces.
In addition to the electronic system, the Interskol angle grinder UShM-125/1100E contains a special soft start board, which greatly facilitates the process of operating the grinder. The presence of a smooth start of the system is especially in demand when working with heavy grinding discs and diamond attachments for stone surfaces.
What ensures reliable retention of an angle grinder?
Comfort during operation is provided by special handles - holders. Each angle grinder is equipped with them. "Interskol" UShM-125/1100E has one more handle, an additional one. Despite the fact that this electrical device is compact in size, allowing it to be held with one hand, an additional handle is included in the kit and is indispensable for work related to cutting metal.
Technical indicators
- The power consumed by the power tool is 1100 W.
- Voltage - 220 V/50 Hz. Power comes from the electrical network.
- Speed: from 3000 to 10,000 per minute.
- Weight is 2.2 kg.
- The power tool is designed for a circle with a diameter of 125 mm.
- The main handle is three-position.
- Smooth start.
- There is a function for adjusting the rotation speed.
- There is a fixed spindle.
When selling Interskol, the UShM-125/1100E is equipped with:
- additional handle;
- a set of gaskets;
- a special key for installing discs and attachments.
Advantages
One of the most reliable and durable products Russian production The grinder "Interskol" UShM-125/1100E is considered. Consumer reviews indicate good performance and high reliability of this electric tool.
Among users strengths This Bulgarian is considered:
- the ability to easily rotate the gearbox 90 degrees in case of an inconvenient or unusual location of the release key;
- high power;
- presence of a speed controller. According to consumer reviews, the ability to reduce the rotation speed makes this angle grinder indispensable for work such as cleaning welds, rust removal or old paint With metal structures using various grinding wheels and attachments;
- the complete set with a long cord makes it much easier to carry and makes it possible to work with an angle grinder at long distances from the outlet and in other rooms;
- small dimensions and weight allow the Interskol UShM-125/1100E to be used for working with small products, since heavier angle grinders are very inconvenient for this purpose;
- availability of quick-release protective casing, for installation of which no tools are required;
- the presence of a power unit that maintains low speeds;
- reasonable cost of production;
- the presence of a smooth descent;
- the presence of a main handle that can be used in three positions;
- complete with additional handle.
The combination of power, dimensions, weight and additional functions - positive traits, which distinguishes the Interskol angle grinder UShM-125/1100E. User reviews confirm the well-deserved popularity of the tool both among craftsmen who professionally use this angle grinder in production, and among amateurs who like to tinker at home.
Disadvantages of UShM-125/1100E
According to numerous consumers, weaknesses of this grinder are:
- Possibility of breakdown This mainly occurs as a result of voltage surges from 220 to 260 V. In this mode of operation, the regulator quickly breaks down.
- High cost of spare parts.
- Poor ventilation and lack of armor on the windings. Lack of ventilation, according to user reviews, leads to the fact that the engine located inside the angle grinder burns out after several weeks of operation. This is due, in the opinion of tool owners, to the fact that plastic casing poorly protects the engine from dust.
A long service life of the UShM-125/1100E is possible subject to high-quality lubrication and timely replacement of its carbon brushes and bearings.
Repair
Any power tool breaks down sooner or later. Interskol UShM-125/1100E is no exception. You can repair this device yourself.
All breakdowns of grinders are divided into mechanical and electrical.
For successful and quick fix problems you will need:
- instructions, which contain a detailed algorithm for disassembling and assembling the Interskol structure UShM-125/1100E;
- product diagram;
- open-end wrenches, hammer, vice, press. These tools are used in troubleshooting mechanical problems;
- IK-2 tester for detecting short-circuited turns (used for electrical breakdowns Bulgarians);
- lubricant, washing liquid, wipes (auxiliary materials).
Before starting work, ensure high-quality lighting of the workplace.
Guided by step by step instructions And visual diagram, you can successfully repair the instrument yourself.
Stator failure. Symptoms of a problem
The most common stator failure is considered to be burning. Mostly it occurs as a result of burning of a power tool. Before you start repairing the angle grinder, you need to inspect the structure and determine the nature of the malfunction. When the stator burns out, the rotor of the angle grinder begins to spin uncontrollably.
How to fix it?
First, you need to disassemble the angle grinder and remove the faulty stator from the housing. You can also check its functionality without removing it from the case.
But such a procedure is only possible in a specialized workshop. At home, for such a check, you can use a special device for monitoring short-circuited turns IR-2. It is intended to detect breaks or short circuits in the stator windings, which does not need to be removed from the housing for this. A burnt stator needs to be rewinded or replaced.
How to rewind the stator?
If it is not possible to purchase a new stator, then you can repair the old one by carrying out repair measures consisting of covering the stator with a new winding.
Sequencing:
- from one edge you need to cut the old winding;
- count the turns and determine in which direction the winding is made;
- measure the diameter of the wire;
- calculate the percentage of filling of the core grooves;
- after removing the damaged winding, it is necessary to check the insulation and clean the grooves, wind the required number of turns;
- put an insulating wire on the ends of the windings;
- solder the ends of the windings.
When carrying out the stator winding, it is important to use alternating current, perform impregnation of new windings. After impregnation, traces of impregnation must be cleaned, both inside the stator and outside, on its body. During operation, it is necessary to check from time to time whether the rotor moves freely inside the stator.
Rotor failures
There are several reasons causing malfunctions:
- carbon brush wear;
- power outages and short circuits;
- wear of the armature commutator lamellas;
- destruction or jamming of the rotor bearings.
Troubleshooting a rotor malfunction requires experience. Best to buy new tool or have your angle grinder repaired at a specialized service center. If the work is done on your own, then it is very important to have required material and follow the procedure:
- unscrew the nut and key securing the rotor drive bevel gear (11);
- the gear is removed from the rotor shaft (8);
- the rotor is removed from the gearbox housing (19);
- Using a special puller or improvised means (a vice, steel strips, a hammer), the bearings (9) are removed from it.
What other breakdowns happen?
Some common electrical breakdowns are:
1. Breakage of carbon brushes. You can also deal with this problem on your own. Procedure:
- The design of the angle grinder "Interskol" UShM-125/1100E is designed in such a way that the carbon brushes are located in special brush holders. You can get to them after removing the back cover in the stator housing;
- Unscrew the screws that secure the brush holder;
- Determine the wear level of carbon brushes. This can be done after measuring their remaining length. If the brush is in working condition, its length should be at least 0.5 cm.
2. Damage to the power cable. This malfunction mainly occurs at the points where the wire enters the tool and into the plug. Twists in these cases will not solve the problem. A faulty electrical cable must be replaced.
Final stage
After all necessary repairs have been carried out, the corner Sander it is put back together in the same sequence as it was taken apart. But before assembly itself, it is necessary to lubricate all mechanical components of the angle grinder.
For this purpose, experts recommend lubricants domestic production. You can find lubricants on the shelves of stores selling household electrical appliances. foreign manufacturers, but they are much more expensive, although their quality is no better than domestic ones. Among huge selection lubricants, you should choose those products that have high adhesion rates (they are recommended for gearboxes of all angle grinders). Such lubricants adhere better to the surface.