Bosch hammer drill 32 DIY repair

Details: bosch hammer drill 32 do-it-yourself repair from a real master for the site my.housecope.com.

The principle of operation of the Bosch 2-26 perforator is no different from perforators of well-known brands.
The rotating rotor transmits torque to the intermediate shaft of the mechanical unit of the perforator, while simultaneously transmitting translational motion through the rolling bearing to the impact mechanism of the perforator and the impact impulse. Torque is transmitted to the working tool with a translational shock impulse. This principle is implemented in all perforators.

But different firms producing punchers have their own design features.

Bosch rotary hammers are considered the best in their segment of power tools. But nothing is eternal.

If your Bosch 2-20, 2-24, 2-26 rotary hammer has stopped working, then you can restore it yourself. You need to have basic locksmith skills and a little understanding of electrical engineering.
And another important detail, the design of Bosch rotary hammers is so simple that it does not cause difficulties during repairs.

When repairing power tools, including the repair of Bosch rotary hammers, strictly follow the safety precautions when working with electrical appliances.

To facilitate the repair of the Bosch rotary hammer, its disassembly and assembly, study the tool assembly diagram:

Schematic puncher Bosch 2-26

Any disassembly of the bosch 2-26 rotary hammer begins after inspection, test switching on and identification of the causes of the device malfunction.

Bosch 2-26 rotary hammer disassembly video

Since the order of disassembly of Bosch 2-20 rotary hammers; 2-24; 2-26 is almost the same, consider the order of disassembly using the Bosch 2-26 rotary hammer as an example.

Disassembly of the Bosch GBH 2-26 dre rotary hammer begins with the disassembly of the quick-release chuck.

Video (click to play).

Two types of cartridges are most commonly used in Bosch rotary hammers: SDS-plus cartridges and SDS-max cartridges. The difference between them is in the principle of clamping the tail of the working organ.

The Bosch perforator chuck device differs in the design of the tool's landing rods, depending on the SDS-plus or SDS-max model. In addition to the listed types of cartridges, there are cartridges SDS-top, SDS-quick.

The difference between cartridge mounts

The procedure for disassembling the Bosch 2-26 perforator cartridge is simple:

remove the rubber tip poz.34;
remove the retaining ring poz.87;
remove the steel washer poz.833;
remove the conical spring poz.833;
carefully, so as not to lose, using a magnet, remove the barrel balls poz.89.

Chuck SDS-plus

Carefully inspect all parts of the cartridge.

Disassembled SDS-plus quick release chuck

SDS-plus chucks have been developed especially for drilling tools. The diameter of the tool shanks is 10 mm, the length of the working tool is in the range of 110…1000 mm. The diameter of the drills lies in the range of 4…26 mm.

Putting the punch on its side, remove the mode switch poz.832.

First, turn the switch to the “Drilling” position, press the end of the switch button (it is red) all the way with a screwdriver and turn the switch counterclockwise by 70º.

While shaking the switch handle, pull the switch handle out of the housing.

Putting the Bosch 2-26 rotary hammer vertically on the handle, unscrew the four screws pos. 90 holding the cover of the mechanical assembly housing.

Press the end of the shaft of the percussion mechanism and remove the cover. The lid is black plastic.

Now you need to remove the barrel poz.821 and the intermediate shaft poz.826. They are not attached to anything.

Then, using a screwdriver, remove the bracket poz.48 of the rolling bearing poz.830. By the way, in a simple way it is called "drunken bearing". Consistently removed: sleeve poz.26 and "drunken bearing".

Got to drunk bearing

disassembly of the Bosch perforator barrel assembly begins from the side of the cavity, removing the cylinder poz.26 from it with the drummer poz.27;
from the cavity it is necessary to get the firing pin assembly;
from the side of the chuck shaft, remove the retaining ring poz.85, the steel ring poz.38 and another locking ring poz.85;
remove the spur gear poz.22.

Impact mechanism assembly, intermediate shaft and drunken bearing

Inside the cylinder, a drummer poz.27 is inserted, from which the rubber ring poz.73 must be removed. At any disassembly, rubber parts must be replaced without fail.

At the opposite end of the cylinder, a hinge poz.29 and two flat washers poz.41 are inserted.

The intermediate shaft is disassembled by removing the shaft poz.24 and pulling out of the housing poz.77 "drunken bearing".

Bearings are removed by pullers or manually, using a tool.

Bosch rotary hammers are very reliable. But there are malfunctions that are practically not encountered in practice. Below is one of them.

If the hammer drill has stopped hammering, but still allows drilling, the most likely cause may be the destruction of the “drunk bearing”. This malfunction is not common and it is not easy to find it.

To fix it, you do not need to go to a repair shop. Such a malfunction will be eliminated by any person more or less versed in mechanics.

New drunken bearing

First you need to disassemble the Bosch puncher to the intermediate shaft. The order of disassembly is given above.

After removing the intermediate shaft, you will get to the "drunken bearing". The destruction of the rolling bearing is indicated by a broken cage, scattered balls, pieces of the cage.

You take out the bearing, remove the dirt, all parts of the destroyed mechanism.

You buy a new “drunk bearing”, and, after lubricating all the parts with new grease, replace and assemble in the reverse order to the disassembly steps.

Disassembly of the Bosch 2-26 rotary hammer, its electrical part, begins with the removal of the rear cover on the rotary hammer handle by unscrewing three screws.

The next step is to remove the reverse switch.

Turn it to neutral position and lift it towards you. The reverse switch is out.

To remove the stator cover, it is necessary, holding the mechanical assembly in the right hand, and in the left stator housing, drag them in different directions, shaking.

Separation of impact block with rotor and stator

To separate the rotor from the mechanical unit, it is enough to drag these parts in different directions. The rotor is attached to the mechanical assembly by a small helical gear inserted into contact with the large helical gear of the mechanical assembly.

The rotor has been released and you can carefully inspect the condition of the collector, bearings.

Bosch rotary hammer

To remove the stator, it is enough to remove the protective plastic protective cover, and knock with a wooden block or mallet on the end of the housing into which the stator is inserted. Before doing this, do not forget to unscrew the two screws securing the stator to the housing.

The stator is removed, the rotor is taken out, you can proceed to their inspection and fault detection of all parts that make up the electrical part of the Bosch rotary hammer.

When inspecting a disassembled Bosch 2-26 rotary hammer, pay special attention to the condition of the carbon brushes, plaque on the brush holders and the reliability of their fastening, the integrity of the reverse switch contacts, and the condition of the wire at the entrance to the rotary hammer.

The length of the brushes must not be shorter than 8 mm. On the brush holders there should be no traces of sparks and coal dust from the brushes, on the contacts of the reverse switch of the Bosch 2-26 puncher there should be no burnouts or damage to the contacts.

The electrical part of the Bosch rotary hammer

A perforator is a construction tool used to perform slotting and drilling operations. Thanks to a special mechanism, the puncher punches a hole in various materials very efficiently and quickly. It can be used in working with concrete, brick, metal, wood, stone. Bosch brand rotary hammers are very common among builders and ordinary people, so it is very important to know how these devices are repaired in the event of a breakdown.

Important pay attention to the original models! There is a fake Bosch Hammer Drill 32. Beware of fakes!

Hammer drills are of two types:

with a horizontal engine installation (the trunk and the anchor of the engine are placed in parallel);
with a vertical engine installation (the same parts are at right angles).

Electrical and mechanical parts are the main components of this tool.

The electrical part consists of:

engine;
engine control device (sometimes combined with a switch);
switch/switch;
elements that dampen interference;
network cord.

The composition of the mechanical part is as follows:

a gearbox that is mounted on the motor shaft;
percussion mechanism;
clutch.

Various add-ons in the form of a drill, crowns, a vacuum cleaner and other parts can be attached to this device.

To repair a hammer drill, you first need to properly disassemble it. And we begin to do this by disassembling the cartridge.

Remove the rubber tip and retaining ring;
Remove the washer and conical spring;
We take out the side balls (preferably with a magnet);
We put the operating mode lever in a position equivalent to the maximum, and remove the switch knob. We fix the position;
Remove the rear cover on the handle and motor brush;
We unscrew 4 screws near the drill to remove the front cover;
We take out the barrel and shaft, and with a screwdriver - the bracket and bearing;
Open the back cover and take out the reverse switch;
We remove the rotor, for which we unscrew the crepes and disconnect the terminals from the starter, which also needs to be removed by removing the protective cover.

Important! When disassembling, be extremely attentive to where and when you remove certain parts. Fold them so that in no case do not lose. It depends on whether you fold the tool back or not.

If any parts in the tool are damaged, broken or do not perform their function well, then they just need to be replaced. If the brushes are worn out, then when parsing them, they are simply replaced with new ones. The punch cartridge with a slow rotation of the rim, a worn boot, and failed bearings are also replaced. But there are other problems that you can fix. If a breakdown of the winding occurs, then the stator and armature must be rewound. It is necessary to monitor the lubrication and lubricate some parts from time to time.

Before you fix something in this model, you need to familiarize yourself with the features of the device, the diagram and the principle of operation. The rotor shaft transmits rotation to the barrel shaft through an intermediate shaft, the bearing of which directs the return movement to the shock piston.

When disassembling the barrel shaft in the impact block, special attention must be paid to fixing the spur gear. Before removing it, you must remove the 3 pins on which it is fixed in this model.

In this bosch gbh 2 24 dsr rotary hammer, the intermediate shaft consists of a switching part, a bearing assembly and a clutch. The latter deteriorates most often, because the teeth wear out quickly in it. The repair of this breakdown is to correct the profile of the engagement teeth. Often you can see that there is no hit. The hammer drill may gradually stop hammering due to wear of rubber parts that need to be replaced in time. And if you apply more force than necessary, this can lead to the fact that the striker will jam in the impact piston.

In this model of the tool splines sometimes wear out. In this case, it is necessary to disassemble the gearbox (it is almost the same as Bosch 2-24, only the bearing is different). It is better to replace the entire barrel, because the strikers wear out along with the splines.

As you can see, repair of perforators can be done at home with your own hands. At the same time, do not spend large sums on various types of repairs in service centers, which, as we know, are very expensive. But do not forget that you must adhere to the rules of use and safety.

In general, it became interesting to me what the joke was, first of all I doubted the product’s performance, the dude suggested going to the Auchan store located nearby where a socket was found right at the entrance, a type puncher worked.
At that moment, the Auchan security guard appeared and demanded that this booze no longer appear here with his puncher, of course, I asked the guard how often this type comes to check the puncher, the guard somehow reluctantly and carefully told that they come there every day, but all the time they are different .Then I asked the booze for a check (by the way, during this time I looked closely at the booze and realized that although he mows like a drunk, he obviously doesn’t look like him, I saw a lot of drunken creatures, they might be talking the same way, but they didn’t have such a clear look and clear coordination) he gave me a large piece of paper printed on a printer with the seal of LLC World of Electric Instruments (sales receipt), the pinned cash receipt was quite real on thermal paper, BUT looking closely, it turned out that all this crap was written out on a chainsaw. I ran into an asshole, he said that he mixed up, immediately took out a check for a puncher and promised that if I take a puncher, then he will be in 20 minutes for 5500 rubles. will bring a chainsaw)))I got into the network from the phone and scored the name of the office in Yandex, nothing was found in response, then I scored the name of the craft in Yandex, but nothing was found on it, attempts to quickly find the Bosch tool catalog were also unsuccessful. Not knowing if Bosch had such a model, I was not sure that this hammer was shit, but I was sure that this was a scam for one reason, there was a construction market across the road where chumps would gladly have raked in a normal zero hammer for not even a quarter as this scammer suggested and for half of its real price.Then I started a slight brainwash by saying that his check was shit and they wouldn’t accept such a check in my office, and whether it was fake at all, to which he replied that the check was not fake, he picked it up near the accounting department. Then I said that I don’t like the seal of World of Electric Instruments LLC, that it looks like a fake, in response, he said that this company is located on the Mitinsky market)))

In the end, I told him to bring me a saw, and when he brought the saw in addition to the puncher, I would immediately take it all from him and take it, the dude began to resent and babble that I should first take the puncher and only then the saw, after which he was maliciously sent.At home, in the depths of Yandex, we managed to dig up references to this scam and also make sure that BOSCH does not have such a model.So if they come to you near a large store and offer you a puncher, a grinder, a chainsaw or something else that seems to be stolen from the nearest construction site, while presenting a check and all sorts of arguments, you can safely beat the scum in the mug.Hammer drill BOSCH HAMMER DRILL 32
1) Tell me where you can download the instructions for it
2) Where can I read more about punchers, in the sense of how they work Image - Bosch hammer drill 32 DIY repair

Firstly, congratulations on buying a fake.
Secondly, there are a whole bunch of topics about perfs on the forum. Just type in search.

Pitbul wrote:
what an interesting thing.

Yes, it definitely resembles a Chinese perf. I saw one of these guys, he sold it for eight pieces, at a discount they say. When I told him that it was a Chinese fake, he began to stubbornly prove to me that it was Germany.

veers wrote:
Yes, it definitely resembles a Chinese perf.

yes, it doesn’t remind you, but it is. The gypsies, together with the Chinese, bought the brand))

Marshall wrote:
Firstly, congratulations on buying a fake.
Secondly, there are a whole bunch of topics about perfs on the forum. Just type in search.

HM.

Well it could be. I won’t drive it into production .. Sometimes only at home, I hope it will work out

But in general, I wanted to download the PDF, so there are a lot of perfs, yes, but I wanted instructions for this perf

Pitbul wrote:
like this?
” >
what an interesting thing.

Yep, he's the one

And why is she interesting then? Looks like a perf

Truth with a suitcase

There is nothing eternal.And the most reliable Bosch rotary hammers begin to break down over time. But any malfunction can be repaired with your own hands, if you have a detailed guide for performing repair work. Below we offer you a guide to troubleshooting Bosch rotary hammers and how to fix them.

inaccurate work with the tool;
improper storage of the perforator;
heavy loads during work on the working bodies during chiselling or drilling;
tool overheating;
long work without interruption;
non-compliance with the terms of maintenance.

Conventionally, malfunctions can be divided into mechanical and electrical.

Next, we will consider faults according to their affiliation, dividing them into mechanical and electrical faults.

When mechanical malfunctions occur in the operation of the tool, an extraneous unpleasant sound appears, sparking increases in the area of \u200b\u200bthe collector, a smell of burning appears, the tool heats up excessively, its power drops depending on the duration of work and the impact on the material.

We will consider all malfunctions on the diagram of the Bosch 2-26 puncher. The remaining models, such as Bosch 2-20, 2-24, differ in the design of the intermediate shaft, the installation of various drunken bearings.

The hammer drill does not hammer under load or in idle mode for the following reasons:

the rubber rings of the drummer, striker, piston are worn out;
the race of the rolling bearing has collapsed;
the cylinder, the striker of the barrel of the percussion mechanism collapsed;
cut off the splines of the clutch mounted on the intermediate shaft;

The main reasons why a hammer drill hammers but does not drill are:

weakened the force of the conical spring pressing the clutch;
the lock roller does not fix the large gear of the barrel shaft;
does not hold the mechanism for fixing the tool in the barrel;
The puncher does not hammer and does not drill.

The main reasons why the hammer drill does not hammer and drill are:

sheared teeth on the small gear of the rotor or on the large gear of the countershaft;
the rotary hammer motor does not work;
There is no power to the rotary hammer motor.

Wear of rubber rings on the drummer, striker, piston.

This reason appears gradually, as the rubber rings wear out. At first the blow weakens, then disappears altogether.

The malfunction is eliminated by replacing the indicated rubber rings with new ones.

With any repair of perforators, its components, all rubber products are subject to replacement.

In the event of the destruction of the drunken bearing poz.830, the rotational movement of the intermediate shaft cannot be converted into the translational movement of the cylinder in the percussion mechanism.

Eliminated by complete replacement of the rolling bearing.

There are cases when the striker in the cylinder poz.26 bites, which leads to the destruction of the cylinder and the impossibility of creating air pressure in the barrel of the percussion mechanism. And the second reason: the destruction or breakage of the striker pos.28, leading to the distortion of the part and the impossibility of transmitting the shock impulse.
Breakdowns are eliminated by the complete replacement of failed parts.

The malfunction is eliminated by repairing the clutch or completely replacing it.
During repairs, worn teeth are sawn off on the clutch. To correct this defect, a round needle file and a drill are used. The coupling is clamped in the hand, and the tooth profiles are straightened with a drill with the appropriate file. The splines on the intermediate shaft are also modified in the same way.

When the pressure force of the spring poz.50 decreases, the clutch slips on the intermediate shaft, not transferring rotation from the small spur gear to the large gear poz.22 of the barrel shaft poz.821 of the percussion mechanism. By the way, on different Bosch models, the clutches are arranged differently.

The large gear poz.22 is mounted on the barrel shaft poz.01 with a roller poz.88, pressed against the shoulder of the shaft with a conical spring poz.80 and fixed with a retaining ring poz.85.

The reason may be the weakening of the force of the conical spring poz.80, the destruction of the retaining ring poz.85, the loss of the fixing roller poz.88.

Bosch rotary hammers use two types of cartridges: SDS-plus and SDS-max. The difference is in the design of the locking mechanism.

The reason is the wear of the antennae of the raster bushing of the cartridge, which leads to the impossibility of transmitting the shock impulse to the working tool of the perforator.

There is a turning of gears with cutting teeth on one of them, more often on a small one.

When the working tool is jammed and the clutch does not work properly, wear or complete destruction of the gear teeth on the shaft of the perforator and the intermediate shaft occurs.

In this case, the rotor or the large gear of the intermediate shaft is completely changed.

The reasons for a non-working electric motor may be:

short circuit in the rotor, stator;
destruction of coal electric brushes;
loosening of brush holders;
burnout of lamellas on the rotor collector;
breakage of the rotor or stator windings.

The listed malfunctions are eliminated by repair (manual rewinding of the winding, replacement of the collector and desoldering of the winding leads) or replacement of the rotor, stator, carbon brushes with new ones.
The main part of the malfunctions of the electrical part of the Bosch 2-26 puncher is confirmed by increasing sparking in the collector area.

The length of serviceable electric brushes cannot be less than 8 mm. When replacing one brush, the second should change automatically.

The rotor or stator windings can be rewound on their own at home.

The reason for this malfunction is a break in the wire that supplies power to the electric motor. Most often, a break occurs at the point where the cable enters the punch. The wire should be replaced with a new one or repaired. The fault can be determined using a tester. If there is no tester, the fault can be found using the power phase and a screwdriver with an indicator neon lamp. By connecting the power wires in turn, at the other end, using a neon screwdriver, determine the presence or absence of a phase.

Punch button does not work. Determined by a short circuit tester.

Most often, a short circuit of the filter capacitor leads to the failure of the punch button. It is best to replace the button with a new one.

The failure of the electrical part of the perforator is accompanied by the appearance of a burning smell, strong heating of the tool during operation, the appearance of large sparks in the region of the perforator rotor collector, and poor operation of the reverse switch.

The operation of the perforator is affected by the condition of the carbon brushes, the reliability of the fastening of the brush holders and their correct installation.

The smell of burning appears when the stator or rotor windings are short-circuited.

The drop in the power of the perforator with increasing load is typical for a break in the rotor windings or for a short length of carbon brushes.

The perforator is most often heated by a short interturn circuit in the stator or rotor.

A large spark in the collector area is caused by an interturn short circuit of the rotor or burnout of the collector lamellae.

The malfunction of the reverse switch occurs due to the burning of its contacts.

But the main reason for all breakdowns is the untimely implementation of technical maintenance work and the replacement of carbon brushes.

Carbon brushes require replacement after 70 hours of operation or when worn up to 8 mm in length.

We have given the main reasons for the failure of Bosch rotary hammers.
Perhaps we have not described all the breakdowns of Bosch rotary hammers.

If you know of other faults with Bosch 2-20, 2-24, 2-26 rotary hammers, please share with us.

Video of replacing the raster sleeve in the Bosch 2-26 cartridge

Video: Replacing the raster sleeve (chuck) with a Bosch GBH 2 26 DRE / How to change the cartridge to 2-26Video of replacing the anchor in a Bosch 2-26 rotary hammer

Due to the ingress of dust, dirt, moisture, the internal lubricant becomes hard over time and does not fulfill its purpose. The perforator starts working.

Tell how to paint the ceiling with acrylic paint, a professional painter can, as they say, "without regaining consciousness." Indeed, technology.

Home renovation is a troublesome business, especially when it comes to interior decoration, which sets the tone for the entire interior. The presence of errors can spoil the whole.

Hello, my father will soon be fifty years old, I thought for a long time what to give him on such a date and came to the conclusion that the hammer drill would not hurt him, tell me if the bosch hammer drill 32 is worthy?

Good afternoon, you know the bosch hammer drill 32 rotary hammer today is the most popular among its colleagues. I can’t say that it is super duper, the most ordinary expensive puncher, and its price, as for me, is very high due to its popularity. I wouldn't pay what it's worth for it. Choose another model.

Why did you choose this tool? You probably really...

... BOSH, also semi-professional, is excellent at work. ...

Everyone who has ever had to work with a hammer drill knows how difficult the conditions for its operation are. That is why do-it-yourself puncher repair is such a popular request on the Internet. And today we will tell you absolutely everything related to the repair of this tool.

Undoubtedly, the owners of such expensive equipment want their devices to be of high quality, to do their job 100%. First of all, the correct use of the tool will save you from serious damage, which we will talk about a little later. And, of course, timely repair of the device. At the same time, any small failure should already be a cause for concern and preparation for repair.

So, such "beacons" can be:

Unstable operation of the perforator in operating mode;
The appearance of strange sounds when the punch is turned on;
The smell of burning;
The perforator does not hammer, although there are no apparent reasons for this.

As soon as something like this happened to your equipment, then it's time for repairs. Like any similar work, it requires attentiveness, understanding the cause of the breakdown and knowing how to deal with it. And your very first step in the repair is disassembling the tool into its components. For many, even this stage causes difficulties, and therefore it is necessary to know everything to the nuances - how, what and why!

Just imagine that your tool suddenly stopped working or you urgently needed to replace some defective part. The easiest way is to take the hammer drill to a service center for repair, but this takes time, which means it will stop your work for some period. But if you know how the device is disassembled, it will be much easier for you to carry out the rest of the work. In addition, this will lead to significant cost savings, because it will not be necessary to spend money on paying for the services of repair centers.Instructions for disassembling the tool:

We start work, starting with the upper node: first, the rubber tip is removed, after that - the washer, spring, the ball completes the work.

After you have removed the ball, unscrew the screws that hold the body, remove the cover on the handle, if any, and lastly disconnect the stator wires.

Take out the brush holder.

The next stage is the separation of the gearbox and housing until a gap is formed. It is through it that we will remove the switch.

After that, the body of the puncher is placed vertically, fixed with a vice, and all its parts are carefully removed from the device.

No matter what kind of breakdown awaits you, clean the case - sometimes it is dirt and dust that prevent the device from working normally.

Operating modes of the perforator.

The final stage of disassembling the perforator involves vertical fixation of the tool using a vice, then all parts and spare parts are removed from it.

The disassembly of the tool should be done with the utmost care, since it is imperative to remember the locations of individual parts and the sequence of their extraction. You should choose a special place for them, otherwise they may get lost, rolling somewhere, and the hammer will not be repaired.

Even if the puncher is in good condition, it still needs to be cleaned periodically for prevention. For this purpose, the device is disassembled, while replacing worn parts. The process of disassembling tools from different manufacturers is approximately the same, with the exception of some nuances.

Before disassembling the device, the causes of breakdowns are established, which may also depend on the surface of the device. For example, very often there is an unsatisfactory condition of the plastic anther on the cartridge due to its wear.

The reasons for disassembling the perforator can be instability of work, the smell of burning, strange sounds when working with a tool.

This is the reason for the loss of stoppers. In order to prevent the problem, it is necessary to use long drills in the process of working with the tool.

The main prerequisites for the repair of the device and its disassembly may be the following:

Instrument instability.
Occurrence of strange sounds when the device is turned on.
The appearance of a burning smell.
In the absence of visible reasons, the device does not hammer.

If these signs of malfunction are identified, the question arises of the need to repair the device.

With great care, the gearbox with the body of the device should be separated in different directions so that a gap of 30 to 50 mm is formed between them. First you need to move the switch to the "impact with drilling" position, only then the switch is removed. After that, remove the housing from the gearbox.

The gearbox is an element that transmits rotation to the cartridge from the electric motor. This is due to bringing the percussion mechanism into working condition. The gearbox includes a set of gears that have a different shape. It can be cylindrical, worm or conical.

Disassembly of the perforator gearbox: 1 - special ring, 2 - releasing bushing, 3 - ring, 4 - ball, 5 - spring. Bearing shield from the casing: 22 - closing spring, 29 - ring, 30 - spring, 31 - retainer.

The unit of the device, including the gearbox, has an electronic device that is able to regulate the number of revolutions. It also regulates the beat frequency. This element requires periodic inspection, lubrication and replacement of worn parts. Before disassembling the perforator gearbox, the cartridge is disassembled, then the lever that switches modes should be disconnected. You may need a flat head screwdriver for this.

For example, in order to repair the armature of the gearbox or its stator, three bolts are unscrewed on the back cover of the tool and the cover is removed. The tool must be disconnected from the power supply before starting work. Be sure to pay attention to the condition of the brushes. However, you need to ring the power button and cable.

If a breakdown is detected after ringing, they proceed to inspect the cable, since it should be checked whether there are kinks in it. In the absence of visual damage, each core of the cable is checked by unwinding it. After penetrating inside the gearbox, an inspection of such parts and spare parts should be made, such as:

Step-by-step disassembly and lubrication of a pistol-type perforator.

It is important to pay special attention to the gear teeth. When worn elements are found, they are replaced with new components. If they are absent, then a thorough cleaning is carried out using white spirit or gasoline.

It should be noted that repairing light-class rotary hammers is not as difficult as more serious equipment, which only professionals understand. When choosing a tool of any class, it is better to purchase a model that has a vacuum cleaner. This device allows you to save time, which is spent on cleaning the tool. Since the amount of dust will be the least, the use of the tool will be safer.

Another problem is the breakdown of the windings, which is also associated with the appearance of dust. In this case, the tool is disassembled if thorough cleaning and replacement of all elements that cannot be repaired are required.

For prevention, the device must be cleaned every two weeks, impregnating it with varnish or lubricant. The choice of lubricant is made very carefully. Basic rules to remember when lubricating:

Types of nozzles and extensions for perforators.

You should buy a solution that is produced by the same manufacturer as the perforator itself.
You can use the oil used for a diesel engine, if there is no varnish or special oil.
It is necessary to replace the brushes, which are more likely to wear out.

It is necessary to disassemble the puncher to replace the brushes even if the tool is a fairly expensive model. To replace the brushes, the puncher is disassembled according to the principle described above. After that, they find brushes that are worn out, remove them from the structure, put others in their place.

It is best to use carbon-graphite brushes, which are the best and not too expensive option. Graphite brushes are used, which are distinguished by a long service life. Coal serve for a relatively short time, but they are in contact with other parts of the perforator at a qualitative level.

First you need to determine the type of punch cartridge installed in the device. Different models are equipped with different chucks, which can be collet SDS, quick release and cam. In the presence of a cam chuck, a key is used to fasten the drill, which is not available in collet and quick-release chucks.

The order of disassembly of the punch: knock on the head of the screw to loosen, unscrew the screw with a screwdriver, clamp the cartridge in a vise and turn the spindle.

Starting to replace the cartridge, be sure to study the method of fastening the part. Fastening can be done using spindles or screw rods. With a very strong fixation, it is impossible not to use additional equipment.

As an easy way to replace, you can get by with a hammer, screwdriver or wrench. When disassembling the tool chuck, the following actions are carried out:

To loosen the fixation of the screw, you need to knock on its head.
It is necessary to unscrew the screw using a screwdriver.
The cartridge is clamped in a vice and the spindle is scrolled.

To troubleshoot the instrument with your own hands, all actions must be carried out in accordance with a certain order:

If no damage is visible during a visual inspection of the perforator, then the next step is to disassemble it.

It is required to carefully remove the switch lever, since improper disassembly can be associated with breakage of fragile parts.
A rubber cap is detached, which is sometimes changed to protect the barrel of the device.
If there is a collapsible cartridge, proceed as follows:

remove brushes;
unscrew the screws;
remove the case;
disassemble decaying spare parts and parts;
make a follow-up inspection;
to replace defective elements and their subsequent lubrication.

Often, the tool chuck is disassembled, debugging or replacing parts and spare parts, lubricating or cleaning.

Video (click to play).

Dismantling is carried out on the basis of knowledge of the designs of cartridges. When a tool is disassembled, the question always arises of how it can be reassembled. This is done according to the instructions explaining how to disassemble the device, only in reverse order.