It is very convenient when one power tool can replace several analogues at the same time. So, the Makita 2450 puncher will perform the functions of a drill, with its help it is easy to knead various solutions, beat the plaster or even dismantle the walls. The popularity of this model in Russia is just off scale. In addition to the good technical characteristics, the Makita HR 2450 has another advantage: the device is easy to repair if necessary on its own. To do this, you need to familiarize yourself with the technology of this process.
general characteristics
The Makita HR 2450 FT rotary hammer is known as a productive and relatively inexpensive tool. It is used by both professional repairmen and home craftsmen. Among the Makita HR 2450 FT models in this category, it is considered one of the lightest tools. It is well balanced, therefore it is convenient in work.
The original HR 2450 from Makita, according to user reviews, is durable. Its dust protection system provides construction and repair work without foreign particles and objects entering the internal parts.
The ability to carry out repairs at home distinguishes the Makita HR 2450 FT from the assortment of similar equipment. In order not to harm the systems of the hammer drill, repairs must be carried out according to a certain scheme, discussed further.
Specifications
Makita 2450 has a number of characteristics that determine its popularity.
The weight of the device is 2.4 kg. The number of revolutions at idle is 1100 per minute. At the same time, the punch is capable of making 4,500 beats per minute. The maximum translational force of movement reaches 2.7 J.
The drills are mounted in the chuck using an effective SDS + system. The hammer drill can perform the functions of drilling, hammer drilling and crushing. Switching between 3 operating modes is provided. Power supply is 780 watts. For switching with the network, a 4 m cable is included.
There are also additional functions for the Makita 2450. The characteristics indicated in the instructions indicate the presence of a reverse, a fuse, a lock on the start button. It should also be noted electronic speed control.
Failure reason - fake
Failure of the presented equipment can occur for various reasons. Most often, this is the achievement of the working limit of Makita HR 2450 parts when the hammer breaks due to a solid service life.
However, in various sources there is a fairly large number of user reviews reporting the failure of their power tool in the first year of operation. At the same time, during the repair process, the Makita HR 2450 rotary hammer can make a crack, it emits an unpleasant burning odor.
This is a common situation in fake copies of technology. Due to the great popularity of this model, a lot of low-quality fakes have appeared.
Firstly, a real HR 2450 rock drill is made in China. If another country is indicated on it, it is definitely a fake. Secondly, all components must comply with the description. The power cord must be at least 4 m, the handle is rubberized (and not plastic), all the parts in the case have their own designation. The serial number must also be indicated on the instrument.
If the Makita 2450 rotary hammer pops at the first start, it emits an unpleasant odor and as a result it breaks after several times of use, this is a poor-quality fake. Evidence of this fact can be identified by a close examination of the product.
When it is advisable to repair Makita 2450 yourself
Repair Makita HR 2450 in the service center will be expensive. Workers perform maintenance and replacement of parts according to a specific system, which involves a large investment of time and resources. Sometimes it will be cheaper to buy a new Makita 2450 than to repair an old one. Licensed parts are expensive.
Even basic maintenance (oil change, component cleaning) will take a lot of time in the service, and the payment will be too high.
Even without a lot of experience in repairing or cleaning such equipment, you can perform basic actions yourself. Adhering to the assembly and disassembly diagrams, as well as recommendations for replacing system components, almost everyone will be able to fix the perforator of the presented model at home.
Repair Technology
In order to repair or clean equipment parts, if necessary, the Makita 2450 rotary hammer must be properly disassembled.
First you need to remove the cartridge, after which the speed switch is disassembled. After dismantling the button, the Makita HR 2450 rotary hammer is inspected inside, repair is carried out in the gearbox area. If a malfunction is detected in the engine, it will have to be disassembled and repaired (replaced).
During maintenance, the old grease and the worn rubber elements of the internal components change. After carrying out the necessary manipulations, the parts return to their places in the reverse disassembly order.
The most frequent failures occur in the area of the cartridge, mode switch and in the tool body. In order to correctly perform the required actions, each of these nodes must be checked one by one. Repair technology needs to be studied separately for each of these sections of the punch.
Cartridge
The cartridge can be disassembled with a flat screwdriver. You will need to remove the rubber boot. To do this, press the cartridge cover. The snap ring is dismantled. Then the cover is removed. After it, a metal ring is disassembled, locking the drill fixation ball in the barrel body.
He gets, and after that a metal washer, a conical spring is removed. If the drill does not automatically lock, then the parts are worn out and require replacement.
After that, the ball from the cartridge of Makita 2450 is densely greased with new oil. The conical spring must be inserted with the narrow end to the resistor. This element is pressed against the guide washer. The ball is fixed in the hole. The remaining parts are assembled in reverse order.
Mode switch
The button of the Makita 2450 puncher may or may not turn on one of the modes over time, or switch to another type of work without permission. Sooner or later this is due to the abrasion of the metal pins.
For disassembly, a T-shaped latch is removed using a screwdriver. Gently pulling her legs, you get the button. Hold the red retainer so that the spring does not push it abruptly.
The lock knob rotates to the far left. She gets along with the spring. The rubber ring is removed from the handle.
Worn parts are changing. The rubber ring and metal pins are treated with grease. Next, assemble in the reverse order. The ring is put on the handle. Then the spring and the latch are inserted. A switch is installed in the gearbox. It should be directed to the sector between the combined mode of operation and shock. The switch will not fully insert at first. Then it is rotated to the drilling mode and further. After such actions, the switch must be turned clockwise and fully insert the latch.
Gear housing
To dismantle the Makita HR 2450 network punch in the body area, you need to lift its barrel up. The tool is pressed against a stable surface. The shell is well wrapped and pulled up. So the details will not fall out.
Next, possible failure nodes are checked. The old grease is cleaned and replaced. Then the housing is installed in place. All components must be in their original places.
The body can be cleaned with kerosene, gasoline. Returning it to its original place, it should be noted that the switch should not be in the case.
To understand where there may be a breakdown of the node in question, you should familiarize yourself with the most common malfunctions.
Gear housing failure
If the hammer is the original production, its body will wear out very soon. After a long time, certain malfunctions may occur.
If the housing was removed along with a needle bearing, then its seat was very worn out. In this case, its replacement is necessary.
Damage to the Makita 2450 rotary hammer in this assembly, requiring such radical action, is detected in the deterioration of the seat of the intermediate shaft.
Also, if the rubber ring is damaged in the gear ring, it can only be replaced together with the housing. The same procedure will require breaking the holes of the mode switch.
Consumer Opinions
In various sources there are a wide variety of user reviews about the presented technique. Due to its popularity, there are both positive and negative reviews.
In recent years, cases of fakes Makita 2450 have become more frequent. Reviews of such a product are the most negative. Experts also note that rapid damage can occur due to improper use or maintenance of equipment.
User reviews note the shock resistance of the punch presented. Marked a good balance, ease of use. The device is capable of performing its functions for a sufficiently long time.
Many people like its versatility. A large number of functions performed by this puncher make it simply indispensable in the process of construction and repair work.
Many users note the great durability of such professional equipment. Makita HR 2450 is relatively cheap to maintain.
In general, according to user comments, this is a high-quality, durable, versatile and relatively inexpensive power tool. Original rotary hammers are characterized by increased strength and reliability.
Having familiarized yourself with the device of the Makita 2450 punch, you can independently carry out scheduled maintenance or repair of this tool. Choosing the original equipment, observing the rules of operation, you can be sure of its durability and high productivity.