How to disassemble punch Makita hr2450

The most difficult operation was removing the striker from the barrel body. There are special holes in the barrel body through which the retaining ring is visible. This ring holds the firing pin with rings and rubber dampers in the body seat. Having inserted a narrow screwdriver into the hole, bend the ring a little. We do this at first a positive moment in one, and then on the other. The stopper must come out of the groove.

Using 2 screwdrivers, squeeze the stopper

Then, from the inside, with a homemade wire hook, we pull out the stopper into the light of day.

With a wire hook, remove the stopper from the inside

How to repair disassemble Makita HR2450 rotary hammer drill

Then we remove the firing pin with washers and rubber rings. It is necessary for the assembly to understand or sketch the placement of all rings and washers. If something goes wrong, photos and pictures from the article will help.

Now you need to remove the gear from the shaft. Pressing on the washer and squeezing the spring, remove the retaining ring from the groove with a narrow screwdriver. After removing it, remove the washer, spring and gear from the barrel.

The toothed wheel is pushed onto the new barrel and engaged with the splines. Next, a spring with a washer and a stopper are installed at this address. It is necessary to insert the retaining ring and fix the mechanism in the working position.

For this purpose, you should take the barrel in both hands and, resting it on your palms, with your fingers squeeze the spring with force, immediately moving the washer and stopper down. You need to squeeze until the stopper enters the groove.

Then a firing pin with washers and rubber rings is installed inside the barrel in the order in which he understood. However, before that, you need to check the condition of the drummer, his appearance.

If the firing pin has potholes and cavities after a long work differently because it was scratched on a broken bushing, then it should be slightly sanded.

For this purpose, it is clamped into a drill chuck and processed with fine emery cloth. If the bulges are very large, then the drummer will be easier to change.

It is necessary to lubricate the firing pin with special grease before installation and in the near future use the lubricant during operation. When inserting the drill into the hammer drill, you need to apply a little grease to its shank. This extends the service life of the machine.

Having installed the striker mechanism in the barrel, we secure it with a retaining ring. Using a screwdriver, try to move the striker on both sides from the inside of the barrel. He should just walk in the canal and not even jam.

The assembled barrel is installed in the gearbox housing. Putting it on a cylinder with a piston, we put it into engagement with the drive gear and insert it into the body. Our client is left with parts that should be perfectly lubricated during assembly.

Then we install the gearbox, having previously lubricated the needle bearing. With 4 bolts we pull the box to the stator housing and set the operating mode switch to the area. For this purpose, set it to a position slightly to the left of the drilling mode. Insert the reddish spring button and move the switch to the drilling mode. We snap on the plastic cover and check the operation of the switch.

Install the mode switch to the area

Snap the cover of the punch mode switch

Then, ending with a chord, the SDS mechanism is assembled. After installing the mechanism spring, we put on a figured washer and insert the ball. After completing the plastic cover, squeeze the spring of the mechanism and insert the retaining ring. Putting on a rubber boot is no longer difficult.

Squeezing the spring with a washer, install the retainer ball

Trying the hammer drill under load. During the operation of the machine, there is no third-party noise in the gearbox; the operating mode switch should simply move without jamming. Then everything should work as before the breakdown.

The creator of this article hopes that it will help esteemed readers to understand the repair of a hammer drill. No matter what kind of breakdown is possible, it will be easy if you find its cause. And then everything depends on your skill and diligence.

In the construction industry, the use of Makita rock drills is very important. The value of this technique can hardly be overestimated, it is indispensable when working with concrete, stone, as it is also called brick. Our client is left with particularly strong materials that lend themselves to the pressure of this versatile tool. In everyday life, Makita rotary hammers are used to drill holes in concrete and stone, to produce gaps, recesses, cable channels in the walls and in the floor.

The Makita hammer drill has a double protective motor insulation. Among the indivisible parts of the structure there is a release clutch, which prevents a jerk when the drill gets jammed, and an electric speed control. Indicator of corporate identity. the tool is equipped with a comfortable case for storing the tool.

Most of the models are equipped with a dust extraction system and come with a soft rubber grip on the handle. The range includes Makita rotary hammers, both straight and vertical motor.

It can do 3 functions: drilling, hammer drilling, chiselling.

Depending on the number of functions performed, they are divided into three groups:

single-mode. drill with impact, for example, Makita HR 2010.
dual-mode. drilling and hammer drilling, or hammer drilling and chiselling. The most popular hammer drill is. Makita HR 5001 C can drill with impact or chisel.
three-mode. switch to any mode of operation. For example, Makita HR 2450.
The SDS Plus chuck is available in one, two and three mode rock drills up to 5 kg. Feature: power up to 850 W, impact force up to 5.3 J, drilling diameter in concrete 18-30 mm.
Two- and three-mode models with weight from 5, 9 kg are offered with SDS max chuck. Trait: power 1100-1500W, impact force 8, 3-17, 5J, largest drill diameter 40-50mm, crowns 105-160mm. Benefits: Highest power and low vibration.

Shop “Makita. »Is a dealer of a Japanese company and offers a wide range of Makita rotary hammers with a manufacturer’s warranty and delivery. Professional managers who have completed training courses will help you choose the best model!

We want to offer Makita perforators throughout Russia: Moscow, St. Petersburg, Yekaterinburg, Chelyabinsk, Nizhny Novgorod and other towns with delivery and warranty, call! Find out detailed information about the methods and of delivery You can contact our managers.

Due to the ingress of dust, dirt and moisture, the internal lubricant hardens over time and does not fulfill its intended purpose. The hammer drill starts to work with abnormal noise. When starting to repair a hammer drill, be sure to read the attached instructions for disassembling, lubricating, assembling the Makita 2450, 2470 hammer drill units. The Makita 2450 and 2470 hammer drill diagram will help you to properly disassemble faulty units and find defective parts. We will also tell you how to disassemble the Makita 2450 rotary hammer.

Dismantling the Makita 2470 punch begins with removing the mode switch knob.

We disassemble the gearbox

To get to the mechanical part, you will need to remove the plastic case.

The order of disassembly of the mechanical part of the Makita rotary hammer First, the protective black plastic case is removed. The case is removed after you unscrew the four screws securing the case from the end. By pressing on the end of the shaft, you will push the gearbox out of the housing.

After removing the housing, it is necessary to separate the rotor from the gearbox. The general mechanical part is called a reducer. It is easy to separate the rotor from the mechanical part (gearbox). Clamp the gearbox with your right hand, clamp the rotor with your left. Swinging, pull both sides in opposite directions. The rotor is held in the gearbox by the friction of the helical gears. The main malfunctions of the Makita rotary hammer occur in the mechanical part of the tool.

The most typical malfunction for the mechanical part, failure of the percussion mechanism.

Disassembly of the percussion mechanism The percussion mechanism is assembled on the inner case and consists of a gearbox shaft and an intermediate shaft. The rotary motion is transmitted through helical gears to the intermediate shaft.

The gearbox shaft is a hollow barrel in which the cylinder moves freely.

A small spur gear mounted on the intermediate shaft transmits rotation to the large spur gear of the gearbox shaft, in which the percussion mechanism is mounted. And the translational movements on the shaft of the percussion gearbox are simultaneously transmitted due to the transmission from the rolling bearing of the intermediate shaft to the cylinder moving in the gearbox shaft.

We proceed to disassembling the intermediate shaft.

Dismantling the intermediate shaft

On the shaft poz.40 mounted helical gear poz.42, which is transmitted rotation from the rotor gear, rolling bearing 608zz poz.41, which transmits translational motion to the hinge poz.34 piston poz.32. On the other side of the shaft, a clutch clutch (pos. 39), a spur gear 10 (pos. 80), a compression spring (pos. 38), a circlip S-7 (pos. 37), a bearing 606zz (pos. 36), should be paid special attention to the condition of the rolling bearings. Imported bearings are installed in the hammer drill. Installation of domestic bearings is allowed. Bearing 606zz can be changed to 80016, bearing 609zz can be changed to 80019.

Moving on to disassembling the shock mechanic’s shaft

Disassembling the hammer shaft Disassembling the barrel of the Makita 2470 hammer drill is a simple process if you use the diagram of the Makita hammer drill. The shaft is a barrel poz.21, in which the impact mechanism is assembled. A gear, pos. 19, is attached to the barrel, which is pressed down by a spring, pos. 18, through a washer, pos. 17, and is fixed with a retaining ring, pos. 16. The cylinder, pos. 32, moves in the barrel, acting on the firing pin, pos. 24. On the reverse side of the striker there is a metal ring, pos. 27, which transfers the blow to the drill. And when you need to replace the drill barrel?

Most often, the metal ring fails. Striker Cylinder with striker

We figured out the disassembly. We change the parts for serviceable ones and get ready to assemble. Learn more about rock drill lubrication and assembly.

Why is it undesirable to hammer with a Makita hammer drill??

Often the equipment fails, and the drill flies out of the hammer drill. This happens for various reasons. Many users of Makita rotary hammers are faced with the fact that their device does not hit, but drills at the same time. You can fix the breakage yourself. The most common causes of malfunctions are listed below:

Intermediate shaft wear
Deformation of the clamping units
Broken connecting rod system
Lack of lubrication for correct operation
Breakage of shock components

Hammer drill Makita: DIY repair

Diagnostic technology and troubleshooting are identical to other devices. First you need to disassemble the tool by removing the case, and then remove the obsolete grease and contamination.

It is recommended to replace the nodes that have stopped working. After that, all the components of the mechanism are set to their original position.

For correct operation, it is recommended to carefully study each point of the repair. To restore the functionality of the 2010 cartridge, the mode switch and the case, the following steps should be taken:

Remove cartridge
Remove switch
Eliminate defects in the inner part of the case
Apply grease and replace worn parts

Disassembling the Makita Rotary Hammer Chuck

Punch chuck repair begins with installing the punch vertically on the rear housing cover. The scheme of the h-makita perforator will help to carry out the disassembly work correctly. Is it necessary to replace the chuck of the Makita 2470 hammer drill? The answer can be obtained only after complete disassembly of the cartridge with your own hands. Using a screwdriver or a puller, the boot is removed, the cartridge is freed from the retaining ring, the coupling casing, the metal ring 20 pos. 4. Next, you need to carefully get out the ball, pos. 20, remove the guide washer, pos. 5, and the conical spring, pos. 6, which supports it. Cartridge disassembled.

The diagram below shows the device of the punch chuck.

The main malfunctions of the Makita 2450 hammer, causing defects in the chuck, are:

wear of the protective rubber boot pos. 1;
relaxation of the retaining ring pos. 2 or its partial wear;
ball wear, pos. 20;
loss of elasticity of the conical spring pos. 6 or its extension.

Repairing a hammer drill chuck is not a complicated procedure and is usually easily done by anyone who can hold a screwdriver.

If replacing a rubber boot, retaining ring, conical spring is not difficult, then replacing a new ball requires attention. The new ball should be 7mm ± 1 µm in diameter. As a lubricant, it is recommended to use a special lubricant developed for the Makita rotary hammer. The grease has the index Makita P-08361, Makita 183477-5 SDS-PLUS 30g for the gearbox. It is recommended to use Makita grease 196804-7 for drill shanks.

When assembling the chuck, install the conical spring with the narrow side to the hammer drill. Do not forget, repairing a punch chuck with your own hands requires care from the collector.

To install the mode switch into the housing, you need to perform some actions: insert the switch into the “drilling” position into the seat until it clicks; move the switch counterclockwise to the “impact” position; move the switch with a click counterclockwise to the “drilling” position; insert the spring and the red button; insert the cover from above until it engages. Mode switch assembled.

At the second stage, you should disassemble the quick-release chuck and repair the drill chuck with your own hands. By the way, the cartridge requires disassembly only for the Makita 2470 models. The cartridge device is quite simple, and any person who has a little bit of locksmith skills can handle its repair.

Makita HR 2450 schematic

The Makita-2450 hammer drill system consists of many complementary units and a list of spare parts. Among the most significant elements, the features of which should be taken into account during repair work, are the following:

Ring locking device. It is designed to hold the ball element holding the drill. Washer and spring guide it
Retaining ring. It is necessary for correct removal of the cartridge cover.
Four screws connect the gearbox to the motor, eliminating vibration. The circuit has a large number of rubber components. They are often the cause of a malfunction.

The description of the mentioned units will be enough for a quality repair.

Description:

I got to my Makita HR 2450 rotary hammer, which lost its punch at its peak. There is an internal blow, but it is not transmitted to the peak. In this video you will see how to disassemble and assemble the Makita HR 2450 hammer drill How to remove the mode switch of the Makita HR 2450 hammer drill. 0:33 How to remove the hammer drill chuck. 1:16 How to disassemble the hammer drill reducer. 2:05 How to assemble the gearbox. 19:15

How_to_parse_reducer_punch_makita_hr2450_video

Even very reliable Makita rock drills break down over time. No matter what kind of breakdown is eliminated, you just need to have straight arms and assertiveness. Apart from electronic defects, rotary hammers are also susceptible to mechanical damage.

The work of rock drills with hard materials in a dusty environment reduces the service life and asks for user intervention during repairs.

Any tool repair begins with determining the nature of the malfunction and disassembly.

A user who owns the original locksmith skills and is familiar with the electrical safety requirements can repair the Makita 2450 and 2470 hammer drill.

The mechanical part of the Makita rotary hammer is considered here, the main malfunctions and methods of their elimination.

Dismantling the mechanical part of the Makita 2470 rotary hammer

To get to the mechanical part of the punch, you need to remove or disassemble the cartridge.

Disassembly of the quick-release chuck Place the punch on the rear case cover on a table surface covered with a clean cloth or paper.

Dismantling rotary hammer Makita HR 2450

Using tweezers or a screwdriver, remove the rubber tip 35, item 1.

Carefully release the annular spring (pos. 4), the coupling cover (pos. 3), the iron ring (pos. 4). You will reach an iron ball with a diameter of 7 mm pos. 20.

Now you can remove the housing of the mechanical part. It is dark in color. Using an electric screwdriver, unscrew the four self-tapping screws at the end of the case.

Clutching the dark case with your right hand, press with a huge finger on the end of the shaft from which the cartridge was disassembled. The plastic case can be easily removed.

To disconnect the mechanical part from the electronic one, you must first pull out the electric brushes. Remember! At the bottom of the housing, the rotor is held by electronic brushes, which must be pulled out without fail.

After checking that the electric brushes are disconnected from the rotor blades, use a screwdriver to pry the iron housing of the hammer drill at the border of the greenish plastic housing.

Now we run over to disconnecting the rotor from the mechanical part of the perforated

ra. The rotor is kept in the mechanical part due to the use of helical gears of the reducer. If you take the rotor housing in one hand, the mechanical housing in the other and pull in different directions, swinging, you will separate these two units.

You will get such a unit in an old grease.

Then unscrew, if there is a hexagon, two bolts M4 × 12, pos. 43., art.266273-7 with an internal hex head. Take out the shaft with the idler spur gear 10 pos.80, art.226399-7. from the inner body pos. 49, art. 153687-8.

You will get such a mountain of unsullied details.

And now painstakingly look through the details, discard the rubber rings outright, picking up new ones. Replace defective parts with new ones.

Frequent mechanical failures of Makita rock drills include:

destruction of the quick-release chuck;
breakage of bearings;
breakage of the striking mechanism;
drill barrel wear;
wear of striker and striker rubber bands;
breakage of gears.

Repair of the punch chuck is done to change the boot and rubber ring, in addition to a conical spring and an iron ball, which secures the working tool (drill). This question shows what is a working tool? specifically, the drill does not hold well in the chuck.

The main reason is the wear of the iron ball 7.0 pos. 20, art. 216022-2. Ball wear occurs from contamination of the bore of the cartridge due to the ingress of dust and dirt.

The type and device of the Makita hammer drill chuck is shown in the photo below.

It is not difficult to repair the Makita 2450 hammer chuck at home. The cartridge must be disassembled, freed from old grease, discarded rubber parts, replaced defective.

complex malfunctions require knowledge of the mechanical part of the Makita 2450 rotary hammer.

Having determined the nature of the malfunction of the Makita hammer drill, proceed to disassemble the mechanical part, called the gearbox.

Disassemble the mechanical part according to the attached video. Free it from the old grease. Take a close look at what remains to be done by our client, the parts, their integrity, the level of wear. What remains to be done for our client? Rubber products require a change at any disassembly.

Let’s consider the repair of the perforator barrel. Let us examine the mechanism completely. Video of disassembly, lubrication and assembly of the Makita rotary hammer

Remember! At the bottom of the housing, the rotor is held by electronic brushes, which must be pulled out without fail.

Next, you need to disconnect the rotor from the removed mechanism. The rotor is simply disconnected from the mechanism by pulling it out, as it is held due to the friction of 2 helical gears.

Now you need to separate the percussion shaft.

In most cases, the rubber rings wear out, the striker pos. 24, compressor spring pos. 18. and cylinder parts.

Oh, so the barrel parts wear out and collapse if the tool is misused.

Let’s see the best complex malfunction. the breakdown of the striking mechanism. Corresponding signs of failure of the percussion mechanism are the absence of impact and the disgusting noise of a working perforator working in the “Impact” mode.

Such a malfunction is typical for rotary hammers, which, during use, were very pressed against the surface to be treated. Having disassembled the gearbox, we remove fragments and pieces of third-party items. We find the faulty part and clean the rest of the old grease.

The striker, pos. 24, art. 324396-8, included in the barrel.

Discard warped parts, change to new ones, cover with a thin layer of grease. The parts are ready for assembly. However, about this decision in a subsequent article.

How to repair the Makita HR 2450 rotary hammer if the impact mode is gone

The Makita power tool has long established itself as a professional, reliable and easy to maintain. It also has good maintainability and a relatively low price.

Of all the lines of hammer drills, I want to slow down on the Makita HR 2450 model. The tool is very comfortable to use, has three operating modes and can withstand very long loads. The perforator worked reliably for the creator of these lines for more than 6 years without breakdowns. over, it was used while working in a saturated load mode.

However, as we know, nothing infinite exists. And reliable technology breaks down. Somehow, in the midst of work, he did not bother. Working in rotation mode, the machine worked, but the blow suddenly disappeared.

The gearbox was disassembled and the cause of the breakdown was identified. The bushing was broken in the barrel body when the hammer (firing pin) specifically performs percussion work.

For this reason, the drummer was jammed in the fragments of the collapsed bushing.

The service recommended changing the barrel completely. It turned out that the bushing is pressed into the barrel at the factory and is not supplied separately. I had to take a completely new barrel.

Here the creator will tell you how to bring the hammer drill into working condition himself after this, in general, light breakdown. If, of course, you have the ability to repair power tools and a desire not to pay someone your hard-earned money, then we take the tool and start disassembling the machine.

Two simple flat-head screwdrivers and one cross-head will come in handy. One of the flat screwdrivers can be narrow or narrow, less than 4 mm wide. A wire hook is also useful to remove the retaining ring. It is made from a bicycle spoke, the main thing is that the wire is rigid and simply does not unbend. You will also need a rubber hammer or a wooden mallet.

Disassembly of the punch should be started by removing the protective rubber cap. boot. It just comes off, just take it with your fingers and pull it off the barrel.

Then, pushing down on the plastic cover and squeezing the spring of the SDS mechanism lock. remove the retaining ring with a screwdriver.

The cover is removed from the barrel, and behind it, again squeezing the spring, we pull out the retainer ball together with the spring and the figured washer.

After that, the mode switch is disassembled. Under the lid holding the reddish release button, of course, there is a special slot for a screwdriver. Having inserted a screwdriver into the myth groove and prying the cover a little at first from the edge textbook, and then from the second, carefully remove it. It is not recommended to make significant efforts, the cover is still plastic and may break. The reddish button together with the spring is removed from the switch body, and it is transferred to the left in full, a little further than the drilling mode. It is from this position that it is removed from the gearbox. For this operation, the switch must be slightly picked up with thin screwdrivers on both sides and removed together with a rubber O-ring.

Remove the punch mode switch

Now the gearbox is being removed. Using a Phillips screwdriver, unscrew the four bolts connecting the box to the stator housing. Then, holding it with your hand, you need to hit a little with a mallet on the end of the barrel so that the box comes off the gearbox.

After removing the box, we take out the barrel from the gearbox. He is filming just.

With a rag, you need to remove the old grease, and wash the barrel with gasoline with another kerosene and wipe it dry.

What is needed, as mentioned above, it was required to change one hundred percent of the entire barrel. But purchased in a car service, this item turned out to be “naked as a falcon.” In other words, nothing happened here, and what remains to be done for our client is to rearrange the parts from the old barrel to the newest “blank”.

Using 2 screwdrivers, squeeze the stopper

Then, from the inside, with a homemade wire hook, we pull out the stopper into the light of day.

With a wire hook, remove the stopper from the inside

If the firing pin has potholes and cavities after a long work differently because it was scratched on a broken bushing, then it should be slightly sanded.

For this purpose, it is clamped into a drill chuck and processed with fine emery cloth. If the bulges are very large, then the drummer will be easier to change.

Install the mode switch to the area

Snap the cover of the punch mode switch

Squeezing the spring with a washer, install the retainer ball

Старые перфораторы Макита лучше? Makita HR 2450 2010 года выпуска, как починить перфоратор, ремонт

Most of the models are equipped with a dust extraction system and come with a soft rubber grip on the handle. The range includes Makita rotary hammers, both straight and vertical motor.

It can do 3 functions: drilling, hammer drilling, chiselling.

Depending on the number of functions performed, they are divided into three groups:

single-mode. drill with impact, for example, Makita HR 2010.
dual-mode. drilling and hammer drilling, or hammer drilling and chiselling. The most popular hammer drill is. Makita HR 5001 C can drill with impact or chisel.
three-mode. switch to any mode of operation. For example, Makita HR 2450.
The SDS Plus chuck is available in one, two and three mode rock drills up to 5 kg. Feature: power up to 850 W, impact force up to 5.3 J, drilling diameter in concrete 18-30 mm.
Two- and three-mode models with weight from 5, 9 kg are offered with SDS max chuck. Trait: power 1100-1500W, impact force 8, 3-17, 5J, largest drill diameter 40-50mm, crowns 105-160mm. Benefits: Highest power and low vibration.

I got to my Makita HR 2450 rotary hammer, which lost its punch at its peak. There is an internal blow, but it is not transmitted to the peak. In this video you will see how to disassemble and assemble the Makita HR 2450 hammer drill How to remove the mode switch of the Makita HR 2450 hammer drill. 0:33 How to remove the hammer drill chuck. 1:16 How to disassemble the hammer drill reducer. 2:05 How to assemble the gearbox. 19:15

The procedure for determining electrical faults

Determination of the integrity of the electrical part of the Makita hammer drill. In order to repair the Makita 2450 or Makita 2470 hammer drill with your own hands, you need to arm yourself with devices and tools. Any tester, screwdriver set, wrenches, hammer, wooden guide will do. It’s good to have a screwdriver with a built-in phase indicator.

You need to take a tester, connect to the ends of the punch plug and press the punch switch. If the tester shows some resistance, then the power circuit of the puncher is intact. If the tester shows infinity, then the continuity of the circuit is broken and you need to remove the back cover to check the connecting cable and electric brushes of the hammer drill.

The back cover (usually black) of the punch is easy to remove, you just need to unscrew three screws with an electric screwdriver or screwdriver.

Remove the cover and use a screwdriver to disconnect the ends of the wires from the electric brushes. Using a tester or a home-made device, popularly called “arkashka”, determine the integrity of the lead wires and the correct operation of the switch.

A few words about a simple control device called “arkashka”. The device consists of an LED or a flashlight bulb, a penlight battery and two pieces of wire. The entire electrical circuit of the control device is a series-connected parts. Connect the battery to one end of the LED or light bulb, and connect the wires to the free ends of the LED and battery. You will have a universal device for checking the continuity of electrical circuits.

Typical malfunctions of the Makita 2450 and 2470 rotary hammer Frequent faults in the electrical part of the Makita 2450 and Makita 2470 rotary hammer:

break of the supply cable at the point of entry into the perforator;
failure of the button of the TG813TLB-1 switch, art. 650508-0, pos. 68.;
wear of electric carbon brushes SV-419, art.191962-4, pos.65;
wear of the reverse switch contacts;
wear of the rotor bearings: bearing 609LLU, item 210060-6, item 51; bearing 607LLU, item 211021-9, item 56;
short circuit of the rotor 220-240 V, art.515668-8, pos. 54;
failure of the stator winding 220-240 V for HR2450, item 633488-5, item 59.

The switch TG813TLB-1, art.650508-0 is used as a start button; pos. 68.

Replacement of brushes is carried out when they are completely abraded or poor contact. This malfunction is detected by strong heating of the points of the places where the electric brushes are installed.

Failure to turn on the hammer drill may be caused by abrasion of the contacts on the reverse switch. Eliminating such a malfunction is very simple.

Hammer drill Makita: DIY repair

Diagnostic technology and troubleshooting are identical to other devices. First you need to disassemble the tool by removing the case, and then remove the obsolete grease and contamination.

It is recommended to replace the nodes that have stopped working. After that, all the components of the mechanism are set to their original position.

Remove cartridge
Remove switch
Eliminate defects in the inner part of the case
Apply grease and replace worn parts

Assembling the Makita Rotary Hammer

After the repair has been made, all the removed parts should be returned to their original position. It is recommended to apply a fresh coat of grease to all necessary parts.

Before assembling, the body is cleaned with kerosene or gasoline. The cleaned casing is returned to its place. The mode switch should not be in it.

Makita rotary hammers are rightfully one of the best on the market today. The 2470 is slightly improved, but that doesn’t make the devices durable. Timely repairs will maximize the period of correct operation. This article helps you understand the features of the main nodes. To eliminate the most common types of malfunctions, these materials are sufficient.

Hammer drills are percussion drilling devices designed for drilling and chiselling holes in particularly strong materials. The hammer drill implements two ideas: the working tool rotates and simultaneously moves in the longitudinal direction, creating an impact impulse.

Rock drills always work under extreme conditions. The duration of the hammer drill depends not only on the correct operating conditions, but also on the reliability of the parts included in the product. But no matter how hard you try, over time, punches start to fail.

To properly repair a punch, you need to familiarize yourself with its device.

Do-it-yourself repair of the Makita 2470 and 2450 hammer drill can be performed by a person who has the skills of a locksmith and knows the basics of electrical engineering. Remember! Observe safety rules and unplug the punch from the mains when disassembling.

Hammers Makita 2450 and 2470 are assembled in almost the same pattern and from the same parts. Repairing them is no different. For ease of repair, below is an assembly diagram and parts catalog for Makita rotary hammers. The scheme of the Makita 2450 and 2470 rotary hammer consists of a mechanical and electrical part.

The mechanical part provides the transmission of torque to the drill bit, while simultaneously creating a translational movement that creates a shock. The mechanical part consists of a rotation drive and an impact mechanism.

The electrical circuit of the Makita hammer drill provides the conversion of electrical energy into kinetic energy through the rotation of the rotor. The electrical part includes an electric motor, a power button with a speed regulator, a reverse switch, connecting wires. The main malfunctions of the Makita rotary hammer Malfunctions of rotary hammers are divided into electrical and mechanical.

In this article, we will consider all the malfunctions of the electrical part of the Makita 2470 and 2450 rotary hammers and how to fix them:

Electrical malfunctions of the Makita 2450 and Makita 2470 rotary hammers Electrical malfunctions are manifested in the fact that when the rotary hammer is connected to the voltage network, the tool does not turn on. The scheme for connecting a Makita rotary hammer to the network is simple. The electrical diagram of the Makita 2450 hammer drill is a serial connection of the electric motor, start button and wires. The scheme of the Makita 2470 rotary hammer is similar.

Through the connecting cord, pos. 72, the supply voltage of 220 V is supplied through the switch, pos. 68, and the electric brushes through the brush holder, pos. 66, to the lamellae of the rotor of the electric motor, pos. 54. and through the contacts of the reverse switch, pos. 60, to the stator winding, pos. 59. The most common malfunction is the lack of contacts in the connections.

The cost of repairing a hammer drill Makita hr2450

The of spare parts, the cost of services are indicated in the price list below:

Name	Repair cost	Repair time	To order
Diagnostics	40 minutes.	Order service
Courier / Master Call	–	Order service
Replacing electric brushes	from 350 rubles.		from 40 min.	Order service
Replacing the anchor	490 rbl.		from 40 min.	Order service
Replacing the stator	490 rbl.		from 40 min.	Order service
Replacing the electric button	380 rbl.		from 40 min.	Order service
Replacing the reverse button	350 rbl.		from 40 min.	Order service
Bearing replacement	350 rbl.		from 1 hour.	Order service
Gearbox replacement	350 rbl.		from 1 hour.	Order service
Replacing the cord	300 rbl.		from 1 hour.	Order service
Replacing the capacitor	450 rbl.		from 1 hour.	Order service
Replacing the control controller	590 rbl.		from 1 hour.	Order service
Replacing keys on the board	490 rbl.		from 1 hour.	Order service
Replacing the board strapping	390 rbl.		from 1 hour.	Order service
Repair of the control board	from 390 rubles.		from 1 hour.	Order service
Hull repair	from 700 rubles.		from 1 hour.	Order service

You can call our managers during working hours and ask your questions.

Repair of the contact between the stator and the reversing switch

To remove the stator, it is necessary to disconnect the gear housing (black) from the stator housing (green).

Remember! In the mechanical part of the rotor, the bearing is pressed by a special ring. When disassembling, do not lose it.

The stator is located in the green housing. Looking into the middle, you will see two self-tapping screws 4 × 60, ref. 266334-3, item 57, securing the stator to the housing. Unscrew them, remove the plastic stator protection for HR2450, art.419201-3, pos. 58, free the stator. When you take out the stator, you will see the contacts on the stator and the reversing switch panel. Clean the contacts thoroughly with sandpaper, treat with solvent or alcohol. Before assembling, bend the contacts so that they fit snugly into each other. Lubricate the contacts with a thin layer of petroleum jelly.

The electrical part of the hammer drill is assembled in the reverse order.

The most indispensable tool in any repair is a hammer drill. Since it is a multifunctional tool, it contains many complex mechanisms and parts that are subjected to stress and fail over time. GsmMoscow service center offers inexpensive and high-quality repair of the Makita hr2450 hammer drill. Preliminary diagnostics are free of charge. The restoration is carried out by experienced professionals. Spare parts are always in stock. The service guarantees a high-quality replacement of defective parts with original and high-quality ones. Each client is issued a warranty card upon completion of the repair. The owner of the Makita rotary hammer can be present during both diagnostics and recovery, which will take approximately 58 minutes.

Makita Rotary Hammer Device

Among users, the Makita rotary hammer has established itself as the tool with the greatest functionality. It is durable and does not require special skills to use, lightweight and convenient during operation.

The design includes a special protective system designed to limit the spread of dust. With timely cleaning, the tool will work efficiently throughout the entire service life.

Makita is widely used by people who prefer to do their own repairs. The tool is simple to operate, the financial maintenance costs are minimal, and it is inexpensive.

The manufacturer provides the following specifications:

Total weight. 2.04 kg
The SDS system allows you to mount the drills
Can be hammered and drilled
The system provides three modes of operation
The greatest number of beats per minute. 4500
Translational force of motion. 2.7 joules
The power of the mains supply is 780 watts.

Makita hammer repair hr2450

Today, developers offer buyers hundreds of different apartments and houses. Often, residents want to slightly change their parameters, making housing more convenient and comfortable. Makita hammer drills allow you to carry out repair work efficiently and quickly. Prefabricated parts and good build quality will increase the lifespan and help avoid interruptions during the restoration process. The article will give an idea of the main advantages of the products of this manufacturer.

Sources:

http://gbou1595.ru/kak-razobrat-reduktor-perforatora-Makita-hr2450/
http://schemy.ru/info/remont-perforatora-Makita-hr2450/

Articles disassemble, hr2450, makita, punch