If you want to facilitate repair work at home or have planned a construction, then you must choose the appropriate equipment. One of them is a puncher, which should be of high quality, but not too heavy for the home master to work was not too tiring. If you specialize in construction work, it is best to purchase a professional model.
Features of choice
It is important to take into account the functionality. It is necessary to consider the number of modes in the design, as well as the type of working cartridge. The equipment described is classified by weight. Models may be:
The weight of the former does not exceed 4 kg, while their power is 700 watts or less. Medium-weight models have power up to 1500 watts. They can be equipped with SDS-max and SDS-plus. Their mass reaches 8 kg. Heavy punchers have higher power, and are complemented exclusively by the SDS-max cartridge, the diameter of which can reach 60 mm.
When visiting a store, you may encounter difficulty in choosing. In order to decide on a model, you should consider at least one of them. An excellent example is the Hitachi DH24PC3 rock drill, which will be discussed later.
DH24PC3 Model Overview
This rotary hammer has a power of 800 watts. The force of impact is 3.2 J. If you use the necessary equipment, the device can be operated as:
- screwdriver;
- drills;
- wrench.
The design provides a sealing system that eliminates leakage of grease. The hammer has a collapsible housing that allows you to replace the SDS clip when it is worn.
Specifications
Hitachi DH24PC3 punch weighs 2.4 kg. The maximum diameter of drilling with a crown reaches 50 mm. This is important if concrete is the base material. Using a drill, you can make 24 mm holes in concrete. The design provides for the presence of electronic reverse. No drill chuck included. But there is a safety clutch.
The spindle speed can be up to 1150 per minute. The length of the case is 351 mm. If the Hitachi DH24PC3 punch is planned to be used for working with wood, then you can make holes in the material with a maximum diameter of 32 mm. The frequency of beats per minute is equivalent to 4600.
The design provides for the availability of speed adjustment options. By making holes in the metal, you can provide a diameter that is 13 mm. The hammer has vibration protection. It has three modes of operation.
Positive Features Review
The above model of the device has many advantages, among them it should be highlighted:
- hole depth adjustment;
- reliable grip;
- high performance;
- reverse;
- smooth adjustment of speed;
- normalization system of internal pressure.
Hitachi DH24PC3 rotary hammer provides the operator with the ability to adjust hole depths. The limiter is responsible for this, with which you can drill a neat hole of the desired depth. It should be noted and reliable grip. This is facilitated by a handle with rubberized inserts. There is an emphasis at the end. The manufacturer has provided a reduction in vibration. These factors ensure comfortable operation and prevent slipping of the hand.
User's manual
Before you start using the Hitachi DH24PC3 hammer drill, you should read the instructions for its use. From it you can understand that the described equipment can become a source of increased danger. If the manufacturer's recommendations are not followed, improper operation can cause electric shock to the operator.
The workplace must be kept clean. It should be provided with good lighting. The power tool must not be operated in explosive atmospheres, or in the vicinity of flammable gases, flammable liquids and flammable dust. The plugs must match the outlet. The plug should not be modified on its own.
Adapters with grounded power tools are not recommended. The equipment should not be exposed to moisture or rain. The cord must be handled correctly. Do not carry power tools by the cord. Pulling it to disconnect from the power outlet is not worth it.
Additional recommendations for using the tool: preparation for operation
The first thing you should pay attention to before starting to use the tool is the power source. It must comply with the requirements indicated on the type plate of the tool. It is also important to make sure that the switch is in the off position. If you insert the plug into a power outlet and the switch is in the “On” position, the tool will begin to work, which may cause injury.
If the platform is far from the power source, an extension cord can be used. It must have the required cross-sectional area. If you need to install a drill, make sure that the switch is turned off. Additionally, disconnect the plug from the power outlet.
If you faced the need to make a large through hole, then you should use a hollow drill bit, which is designed for small loads. Together with it, you need to use the centering rod and shank, which are provided as optional accessories.
The tool must be serviced from time to time. It provides for checking replaceable elements. Failures in the engine can result from the use of a blunt interchangeable tool. This reduces productivity, so you need to replace these elements with new ones or sharpen.
It is important to make sure that screws are installed. It must be ensured that they are well tightened. If one of them is loose, it must be tightened immediately. If you neglect this rule, then working with the tool can pose a serious danger.
The cost of spare parts
No matter how good the equipment, you may need parts. For example, an anchor on the Hitachi DH24PC3 punch will cost 1290 rubles. But the push-button switches you can buy for 1170 rubles. Lubricant for drills and parts costs 770 rubles. The rolling bearing coupling will cost 1,560 rubles. Brushes for Hitachi DH24PC3 punch can be bought for 440 rubles.
Grease for gear parts costs 260 rubles. The cylinder of the shock mechanism - 2490 rubles. You can buy a piston sleeve for a drill for 1190 rubles. You can order spare parts and repair Hitachi DH24PC3 rotary hammer yourself. But first you need to get acquainted with the prices and features of the work. For example, an electric motor stator costs 900 rubles, and a network cable costs 860 rubles. But the repair of the described model of equipment will be discussed below.
Rotary Hammer Troubleshooting
If you encounter any problems while using the equipment, you should familiarize yourself with how to disassemble the Hitachi puncher DH24PC3. The workplace should be a flat surface, which should first be covered with a cloth or clean paper. The space needs to be well lit. It is important to take care of the availability of:
- screwdriver;
- screwdrivers;
- a vice;
- pliers;
- pliers.
To begin with, the keyless chuck is removed. Use a screwdriver to remove the rubber boot. At the next stage, the retaining ring, as well as the casing, are removed. The steel ring must be pressed by pulling out the locking ball. The steel ring is removed, as well as the guide washer, as well as the conical spring.
Now it remains only to remove the washer and circlip. Repair of the Hitachi DH24PC3 rotary hammer may be required if the equipment ceases to turn on. Having unscrewed three self-tapping screws in the handle area, you can disassemble the tool. The next step is to remove the handle cover. Under it you will see dust. Usually it becomes the cause of the failure of the tool.
The problem may be that dust has accumulated in the switch, as a result of which the contacts are erased. This also happens with electric motor brushes, percussion gear, gearbox and bearings. If you notice that after operation the hammer has weakened, then you must disassemble the tool by unscrewing 4 screws along the edges. After examining the parts and assemblies, you can not identify problems. Sometimes it is striking that the lubrication is very low, and this leads to negative consequences during the continuous operation of the tool.
Knots and mechanisms need to be greased with lithol. Next, you can inspect the sleeve with the piston. If the latter is in good condition, as is the o-ring, then special attention must be paid to the sleeve. The wall inside may turn out to be wavy and radiant, while the metal sags. You will need to purchase a new sleeve and install it in place of the old one.
Dismantling the countershaft
The intermediate shaft is inserted into the housing. To dismantle it, it is necessary to remove the shaft from the housing. There are several parts on the countershaft. One of the most important is the bearing and the mode switch. In order to disassemble the intermediate shaft, it is necessary to remove the helical gear, the rolling bearing and the mode switch.
Finally
Although it is possible to repair the Hitachi DH24PC3 punch with your own hands, it is recommended to do this only after the warranty period has expired. Up to this point, if a problem occurs, it is best to contact a specialist. In order to extend the life of the device, it is important to subject it to maintenance, which is especially true of the engine - the heart of a power tool. It is important to carefully ensure that its winding is not flooded with water or oil, and also is not damaged.