How to disassemble perforator interskol 30

Equipment failure symptoms


  • Burning smell from the device.
  • There are pauses or small short circuits during operation.
  • The device does not turn on the first time or works intermittently.
  • The appearance of extraneous noise when working with the device. At the same time, such noises were not noticed before.

Any of the above signs should not be ignored. Begin to investigate the cause of the unit failure. For trouble-free operation over a long period of time, you should carefully monitor and care for the instrument. To repair the device, you should study the components of the punch and learn how to disassemble and assemble it.

disassemble, perforator, interskol

general information

The most common cause of tool breakage is loose wire. Due to simple inattention, people pay significant money for a sheer trifle in puncher repair services. An elementary inspection is enough to understand that the tool has broken conditionally, that it can be easily repaired by yourself without outside help.

How to repair a hammer drill with your own hands: disassembly, assembly, video

Any tool, including a hammer drill, requires special care and careful use. Therefore, each owner of such an electric tool is obliged to regularly inspect the unit, to know how to disassemble a hammer drill. It is quite possible to disassemble and repair the device at home without spending a penny on the services of a specialist.

A hammer drill is an indispensable tool at any construction site, but due to careless use it wears out and breaks down very quickly. This is due to the high stress on the tool. As we know, the rock drill is often used at full power in the toughest conditions. Due to such loads, even branded models are susceptible to breakdowns. Therefore, every owner of this device should know how to repair a hammer drill with his own hands.

Like any other technical device, the hammer drill can be repaired, for this it does not have to be carried to a specialized workshop. Although not every man knows how to repair a hammer drill, it doesn’t matter! This article will help you do DIY repairs without assistance.

Disassembly and assembly of the tool

The damaged wire on the device, like other minor mechanical damage, can be easily noticed. If you make a thorough inspection of the parts of the instrument, then it is not difficult to see other minor malfunctions that led to the breakdown of the device. For more serious problems, you need to disassemble the hammer drill. And upon completion of the repair work. also the assembly of the perforator. The second operation in some cases is more difficult than the first. the appearance of unnecessary parts after assembly will indicate repair miscalculations. To prevent this from happening, you need not only to know how to properly repair a hammer drill, but also how to assemble it. It is important to be careful and careful when repairing a tool, then in 99% of cases the repair will be successful.!

To start repairing a perforator, including a barrel type, you must properly disassemble the device:

  • Removing the rubber tip and ring spring. After that, we proceed to remove the drill coupling casing itself.
  • Carefully take out the steel ball, which acts as a fixation.
  • Removing the switch handle, having previously positioned the operating mode lever to the maximum position. Press the button to fix the position.
  • Removing the cover (rear) on the handle.
  • Removing the motor brush.
  • Removing the front part, for which you need to unscrew the 4 screws located near the drill.
  • We take out the rotor. To do this, unscrew the crepes located on the stator, then detach 4 terminals from the stator contacts.
  • We take out the remaining parts.

In some cases, if the problem lies in the gearbox or percussion mechanism, we additionally unscrew the end of the gearbox housing, and then carefully remove the casing made of plastic. To keep the parts in place, it is best to do this entire process with the tool on its side.

Is DIY repair real?

Not always, a visual inspection will help to identify the cause of the breakdown. In this case, the next step is to disassemble the punch. If the device has served for many years and is not of significant value, you can try to find the cause of the breakdown by disassembling the tool into separate parts. Feel free to start an offline repair if the cause of the tool malfunction is visible visually and you already have an idea of ​​the perforator stuffing. If the device was purchased relatively recently, and the model itself is more modern and costs a lot of money, then it is best to contact the service center, because an independent repair can not only fix the device, but cause harm. If the inspection of the unit did not reveal a breakdown, then it is necessary to postpone the repair of the hammer drill. In the latter case, it will not be superfluous to consult an experienced specialist.


In most cases, repairs involve replacing broken and defective parts. But there are other problems in the operation of the instrument:

  • Breakdown of the winding. To solve the problem, rewind the armature and stator.
  • Wear of brushes. In this case, they resort to disassembling the punch and replacing worn parts.
  • Wear of the anther of the hammer drill. It cannot be repaired, only replaced.
  • Punch chuck. The problem will be noticeable if its rim starts to slow down constantly. To be replaced.
  • Poor lubrication. Check the oil level in the oil pan periodically. Some parts of the tool should also be lubricated: intermediate shaft, gear gear.
  • Bearing wear. The bearings gradually collect dust and dirt during operation, the grease thickens, they begin to overheat and, as a result, fail. Replaceable.
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If the breakdown is serious, and you have no experience in repairing, the best option for you is to contact experienced craftsmen. Do not start repairs if you are not sure that you can independently identify the cause of the breakdown, and are not able to solve it!

How to insert a chuck on a hammer drill

In order to insert the cartridge into the hammer drill and assemble the device, you will need to do the following:

  • Screw the drill onto the product (the procedure is done all the way).
  • Place the screw in the socket.
  • Tighten completely with a screwdriver.

What types of hammer cartridges are there

There are different types of hammer drill cartridges, each variant has some differences.

  • SDS. A part of this type appeared relatively recently, but it is considered the most optimal option for tools of this type. Supplied with five types of clamping devices. conventional, top, quick, plus, max.
  • Gear-crown key. The classic version of the cartridge. To use, you will need a special wrench to help fix the working attachment. With its help, the fastening mechanism is compressed and unclenched. Considered very reliable.
  • Quick-clamping. They are distinguished by their ease of use. You just need to clamp the mechanism of the product and you can start working.
  • Clamping with one sleeve. Such chucks are installed only on rotary hammer models where there is an automatic blocking of the working shaft. As a result, the nozzle shank is clamped by manually rotating a special sleeve.
  • Transient. A hammer drill is often used with different attachments, so special adapters are needed. Thanks to such elements, the operation of the tool in various fields is possible.

The procedure is carried out with special care so as not to lose details.

Repair or replacement

In the absence of spare parts, it will be possible to repair the cartridge only in two cases:

  • ball wear,
  • lost plasticity of the lubricant, as a result of which the operation of all parts is disrupted. In such cases, it is easier to pick up an analogue in order to change it completely than to repair the element.

The cartridge and its purpose on the hammer drill

The main function of the chuck on the rock drill is to hold the special attachments required for a certain type of work. The part is also called an actuator, because thanks to such an element, the torque is transmitted correctly.

How the punch chuck works

Almost every tool is versatile. There are many unique heads, nozzles and adapters on sale for rock drills, but the main thing for the main work is the cartridge.

Experts recommend that you always have an additional part in stock. In addition, it is believed that for each type of activity it is worth picking up a specific cartridge.

The main types are:

  • Keyless. Better to choose for work when a quick change of attachments is required.
  • Key. Good option for large diameter drills.

Before disassembling the punch chuck, it is recommended to consider its design. In the old versions, the connection of the drills was carried out using special cams. In modern models, fixation is used with guide wedges and locking balls. Additional elements may also be present:

  • speed regulator,
  • electronic and brush reverse,
  • quick change system,
  • various indicators,
  • friction clutch,
  • anti-vibration system,
  • immobilizer and others.

Important! Completeness mainly depends on the model of the hammer drill. Models from well-known manufacturers are better equipped.

There are several types of cartridges

How to remove a cartridge from a punch

Before removing the nozzle from the perforator, you need to accurately determine its type. After that, the tool is disassembled and the elements begin to change.

Attention! It is best to carry out the procedure on a table so as not to lose important details.

During parsing, the elements are laid out in the sequence in which they are removed. then it will be easier to assemble the tool.

The process includes several stages:

  • Remove the rubber tip from the end.
  • Remove the first retaining ring with a screwdriver.
  • Pull the plastic clutch cover down.
  • Remove the second circlip.
  • Remove the clutch cover.
  • Remove springs, lock plates and balls.

The parsing process is complete. If you need to change the chuck on a Bosch, Makita, Decker or, for example, Elitech hammer drill, you will need to remove the rest of the bushing. A new part is installed instead.

To understand what device the hammer drill mechanism has, you need to inspect the tail of the nozzle. It has several recessed areas called grooves. The nozzle that will be installed in SDS-plus cartridges is distinguished by the presence of 4 notches. 2 closed and 2 open.

How to disassemble a punch chuck

In some cases, it becomes necessary to disassemble the cartridge itself, for example, for cleaning, lubricating or changing some parts. In order to carry out the process correctly, it is advisable to know the brand of the manufacturer, because the main process depends on it. For example, more modern brands (Devolt, Metabo, Shturm, Caliber) are very similar in structure to foreign counterparts and are disassembled according to the same schemes.

Parsing scheme based on the Bosch brand (the products of this brand are the most popular):

  • Unscrew the plastic part and remove the seal from the rubber.
  • Using a screwdriver, carefully remove the ring securing the structure and the washer.
  • Remove next retaining ring.
  • SDS clamp is disassembled according to a certain scheme. first remove the ball, then the washer, and lastly the spring.
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Important! It is imperative to follow the described sequence so as not to break the product and not disrupt its operation.

After assembly, all fasteners must be checked

How to disassemble a cartridge on a hammer drill. device

A hammer drill is a tool used to perform a variety of construction work. The item has earned its popularity due to its power and great functionality. However, it is worth remembering that the hammer drill works under constant load, so some parts may fail. Before removing the cartridge from the punch, it is recommended to study all the features of the process.

Ремонт бочкового перфоратора Домотек

The design of rotary hammers of different brands is different

Dismantling catchers, strikers

Dismantling the safety catcher pos. 40 consists in separating from it the shock absorber pos. 41, the striker catcher pos. 42, the safety catcher cover pos. 43 and the retaining ring pos. 44.

In the piston poz.47 inserted striker poz.45, which must be removed.

From the striker, pos. 45, the O-ring, pos. 46, is removed.

From the ears of the piston, pos. 47, it is necessary to separate the pin, pos. 48, and remove the two rings, pos. 49.

Often, users switch the hammer operation mode without stopping the tool. And this is the main reason for the breakdown of the mode switch in rotary hammers.

The mode switch of Interskol perforators includes a different number of parts.

The mode switch of the Interskol P-18 / 450ER perforator is distinguished by a certain complexity.

Punch mode switch Interskol P-18 / 450ER

Modes are switched by transferring the cam coupling half pos. 44 out of engagement with the pinion shaft pos. 43.

The translation is carried out using the mode switching bracket, pos. 52, the switch strip, pos. 55, the switch knob, pos. 16.

Malfunctions are manifested in the inability to transfer the switch to the desired mode.

The malfunction is eliminated by replacing the spring pos. 48, aligning or replacing bent parts.

The complex design of the mode switch of the Interskol P-18 / 450ER perforator forced the developers to design a new scheme and implement it in the Interskol P-26 / 800ER perforator.

Punch mode switch Interskol P-26 / 800ER

Modes are switched by means of the switch leash, pos. 55, the spring, pos. 56, and the switch knob, pos. 28.

The design uses the smallest number of parts, which increases the reliability and performance of the Interskol P-28 / 800ER perforator.

In the perforator Interskol P600ER, a slightly different design of the mode switch is applied.

Mode switch perforator Interskol P-600ER

Modes are switched by moving the clutch (pos. 40) away from the rolling bearing (pos. 41).

Dismantling perforator Interskol P-710ER

Disassembling the instrument receiver

The tool receiver, pos. 12, is disassembled after removing the keyless chuck parts from it.

At the first stage, four rollers, pos. 11, are carefully removed. Further, the receiver is removed from the body, pos. 18, in which the needle bearing, pos. 20, is inserted.

In the needle bearing, the barrel pos. 36 is attached.

Remove the tool receiver from the barrel.

From the tool receiver it is necessary to remove the industrial mass pos. 16, the bushing pos. 15, the collar pos. 14 and the rubber O-ring pos. 13.

Dismantling the barrel of the percussion mechanism

The stem of pos. 36 is removed from the inner casing of pos. 18 after the gear housing is separated from the stator casing. To do this, unscrew four screws pos. 30 from the gearbox housing.

Then unscrew the three screws, pos. 85, on the handle, pos. 86. Having removed the handle, turn the body of the brush holder, pos. 81. until the moment when it can be pulled out of the case.

Now the gearbox housing and stator housing can be easily separated using a screwdriver, which pushes one of them at the docking point.

The barrel can be easily removed from the box pos. 53 (inner body).

On the outer diameter of the barrel put on: spur gear pos. 35, spring pos. 33, washer pos. 32 and retaining ring pos. 31.

In the barrel cavity there is a catcher body pos. 40, firing pin 45.

Dismantling of the percussion mechanism of the Interskol P710ER perforator

The design of the percussion mechanism and the disassembly procedure for the Interskol 710ER perforator is somewhat different from the perforators of other models.

Major differences in the design of the countershaft, hammer barrel and mode switch.

Diagram of the percussion mechanism and the intermediate shaft of the Interskol P710ER perforator

Perforator Interskol 710ER is a rotary percussion machine. Consists of an electric drive and an actuator. A collector motor is used as an electric drive. The actuator is a combination of a compression-vacuum type percussion mechanism and a rotary mechanism. The reciprocating motion is transmitted by a rolling bearing.

The diagram shows the procedure for disassembling the barrel pos. 15 (indicated by a red arrow), the composition of strikers and strikers (indicated by a blue arrow). The green arrow indicates the details of the mode switch.

The intermediate shaft consists of a shaft pos. 47 and parts mounted on it. Easily disassembled, according to the attached diagram, does not require special knowledge.

Mechanical group of faults in Interskol rock drills

Let’s consider all the malfunctions using the example of the Interskol P-26 / 800ER perforator.

The first group of faults includes breakdowns associated with the failure of parts of the percussion mechanism.

This group of faults is manifested in the fact that during operation the hammer drill drills, but cannot chisel.

We disassemble the perforator step by step. quick search for breakage

Just imagine that your tool suddenly stops working or you urgently need to replace any faulty 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 a while. 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 there will be no need to spend money on paying for the services of repair centers.

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Instructions for disassembling the tool:

  • We start work, starting from the upper unit: first, the rubber tip is removed, then the washer, the spring, the ball finishes working.
  • After you have removed the ball, unscrew the screws that hold the case, remove the handle cover, if available, and lastly disconnect the stator wires.
  • Removing the brush holder.
  • The next step is to separate the gearbox and housing until a gap forms. It is through it that we will retrieve the switch.
  • After that, the punch body is placed vertically, with the help of a vise it is fixed, and all its parts are carefully removed from the device.

Whatever breakdown awaits you, clean the case. sometimes it is dirt and dust that prevent the device from working normally.

Required tools and materials

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

What you need to know about hammer drill repair?

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, the device was repaired on time. At the same time, any small failure should already become a cause for concern and preparation for repair.

So, such “beacons” can be:

Обзор перфоратор ИНТЕРСКОЛ П-600ЭР

  • Unstable work of the punch in the working mode;
  • The appearance of strange sounds when turning on the punch;
  • The smell of burning;
  • The hammer drill does not hammer, although there is no apparent reason for this.

As soon as something like this happens to your equipment, then it’s time to repair. Like any such work, it requires care, understanding the cause of the breakdown and knowledge of how to cope with it. And your very first step in the repair is to disassemble 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!

Do-it-yourself punch repair. how to quickly fix a breakdown?

Punch repair yourself step by step

To repair a device such as a hammer drill, you should be as prepared as possible, which will reduce financial and labor costs to a minimum. It is not bad if you are more or less familiar with the construction of a punch, you know what parts and assemblies it consists of, which will allow you to quickly replace a broken part. Most often, the repair of a perforator is reduced to a banal replacement of the “flying” elements, which include:

  • Anchor;
  • Brushes;
  • Gears;
  • Starters;
  • Bearings;
  • Network cables;
  • Switches.

It is worth noting that the easiest way to repair tools of a light class, given the fact that such a hammer drill is perfect for carrying out construction work at home. But breakdowns of more serious equipment are much more difficult, and only professional craftsmen can handle them. In any case, no matter what class of tool you are interested in, find a model with a vacuum cleaner. this device will save you time for cleaning, and also make your work safer, since it reduces the amount of dust.

Another problem is the breakdown of the windings, rewinding of the armature and starter, which also arise from dust. Repair consists in thorough cleaning and replacement of those parts that cannot be repaired. However, “prevention” is a more reliable method. To do this, you need to clean the device every two weeks, soak it with varnish or grease. By the way, the choice of a lubricant must be carefully considered. So, there are several rules. First, it is better to purchase a solution from the same manufacturer (Bosch, Makita, Enkor) as the perforator itself, in this case, in terms of its composition, the oil or varnish will be ideal. If such a composition is not at hand, a diesel engine oil is perfect for you.

The second most common cause of breakage is brush wear, no matter how much your tool costs. even the most expensive models are prone to this problem. It is very easy to replace them: we disassemble the perforator according to the above described scheme, find worn brushes and put new ones in their place. You just need to correctly determine which of them is best to use: coal, graphite or carbon-graphite. So, graphite ones have a long service life, however, due to the hardness of the material, the collector may suffer. Carbon elements have a short life, however, they have high-quality contact with other parts of the hammer drill. The optimal and inexpensive is the purchase of the third option.

There are also problems with the mechanical elements of the device. Each model is equipped with switching modes, and they often fail, especially on cheap devices. The algorithm of work is the same. we disassemble the puncher, find the broken parts, replace them. The main thing is to purchase items suitable for this model. A similar problem often “haunts” cartridges that are exposed to maximum stress. First of all, protect them from dust and dirt by rinsing the elements with grease. But if the cartridge is still broken, we will have no choice but to change it.

Now you know how to fix a hammer drill and see that most of the breakdowns come down to simple cleaning or replacing defective parts. But if you disassemble the tool, and there are no apparent reasons, it is better to take the device to a service center. specialists will quickly find the cause and eliminate it.