A hammer drill is a tool that requires serious consideration during its operation and disassembly. To do this, you need to know its device, all nodes included in the design of the tool. Quick orientation in the device and knowledge of how to disassemble the punch, will allow you to avoid unnecessary costs, both financially and in labor terms.
A perforator, unlike a conventional drill, can drill concrete and other durable materials without problems.
Any, even the smallest, malfunction of the device can lead to breakdowns of a more serious nature. Quickly find the breakage of the tool will allow its gradual disassembly. It is important to know the cause of the breakdown and the methods that will allow to eliminate it. Disassembling a tool involves following a certain sequence.
Phased disassembly of the punch do-it-yourself
To begin with, the upper knot of the perforator is inspected, which is disassembled primarily into its components. All parts are removed in the following order:
When the last part is removed, it will be necessary to unscrew all the screws holding the case. Next, remove the pad on the handle when it is available, then you need to disconnect from the starter each wire. Then make the extraction of the brush holder.
Diagram of the device punch.
In the next step, the gearbox and housing are disconnected until a gap appears, through which the switch should be removed. Next, the device should be fixed in a vertical position using a vice. This will get all the details out of it.
You can use the services of the appropriate service for disassembling the punch. By doing this on your own, you can save a lot of time and financial resources to repair equipment. During the execution of works, you should follow the step-by-step instructions:
- Disassembly begins with the top node, after removing the tip, the washer, and at the end - the spring with the ball.
- When the ball is removed, you can begin unscrewing the screws that allow you to hold the body.
- After that, remove the pad on the handle when it is present, then each of the starter wires should be disconnected.
- Remove the brush holder.
- Disconnect the gearbox with the housing until a gap is formed so that the switch can be removed.
Modes of punch.
The final stage of disassembly of the punch involves the vertical fixation of the tool using a vice, then from it get all the parts and spare parts.
Disassembly of the instrument should be done with utmost care, since it is imperative to remember the locations of the individual parts and the sequence of their extraction. It is necessary to choose a special place for them, otherwise they may get lost, having sunk somewhere, and the puncher will not be repaired.Back to table of contents
What can be the reason for disassembling the punch
Even if the perforator is in good condition, it is still necessary to periodically clean it for prevention. To this end, the device is disassembled, replacing worn parts. The process of disassembling tools from different manufacturers is about the same, with the exception of some nuances.
Before disassembling the device, the causes of damage are established, which may depend on the device surface. For example, the unsatisfactory state of a plastic anther on the cartridge is very often observed due to its wear.
The reasons for disassembling the punch can be instability of work, the smell of burning, strange sounds when working with a tool.
This is the cause of the loss of the stoppers. To prevent the problem, it is necessary to use long drills in the process of working with the tool.
The main prerequisites for the implementation of the repair of the device and its disassembly may be the following:
- The instability of the instrument.
- The appearance of strange sounds when you turn on the device.
- The appearance of the smell of burning.
- In the absence of visible reasons, the device does not hammer.
When identifying these signs of faults raises the question of the need to repair the device.Back to table of contents
How to disassemble the punch reducer
It is necessary with great care to separate the gearbox with the instrument housing in different directions so that between them a gap of between 30 and 50 mm is formed. First you need to turn the switch to the "hit with drilling" position, only then do you remove the switch. After that, remove the housing from the gearbox.
Gearbox is an element that transmits the rotation of the cartridge from the electric motor. This is due to bringing the percussion mechanism in working condition. The gearbox includes a set of gears that have a different shape. It can be cylindrical, worm or conical.
Punching gear reducer disassembly: 1 - special ring, 2 - release sleeve, 3 - ring, 4 - ball, 5 - spring. Bearing shield from the housing: 22 - closing spring, 29 - ring, 30 - spring, 31 - retainer.
The instrument assembly, including the gearbox, has an electronic device that is capable of controlling the speed. It also regulates the frequency of strokes. This element requires periodic inspection, lubrication and replacement of worn parts. Before disassembling the punch reducer, the cartridge is disassembled, then the lever that switches the modes should be disconnected. You may need a flathead screwdriver for this.
For example, in order to repair the armature of the reducer or its stator, three bolts are unscrewed on the back cover of the instrument 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 want to ring the power button and cable.
Upon detection of a breakdown after ringing, they proceed to the inspection of the cable, since it is necessary to check whether there are any bends in it. In the absence of visual damage, check each cable of the cable, unwinding it. After penetration inside the gearbox, inspection should be made of such parts and spare parts as:
Phased disassembly and lubrication of the pistol-type perforator.
It is important to pay special attention to the gear teeth. When worn items are found, they are replaced with new components. If they are absent, then make a thorough cleaning with the use of white spirit or gasoline.
It should be noted that repairing light-weight drills is not as difficult as more serious equipment, which only professionals understand. Choosing a tool of any class, it is better to purchase a model that has a vacuum cleaner. This device saves time spent on cleaning tools. Since the amount of dust will be the smallest, 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 instrument is disassembled if thorough cleaning and replacement of all elements that cannot be repaired is required.Back to table of contents
How to disassemble the drill to lubricate it
For prevention, the device needs to be cleaned every two weeks, soaking it with varnish or grease. The choice of lubricant is made very carefully. Basic rules to keep in mind when lubricating:
Types of nozzles and extensions for the punch.
- You should buy a solution that is produced by the same manufacturer as the punch itself.
- You can use the oil used for a diesel engine if there is no varnish or special oil.
- It is necessary to replace brushes that are more often subject to wear.
It is necessary to disassemble the punch to replace the brushes, even if the tool is a fairly expensive model. To replace the brushes, the perforator is disassembled according to the principle described above. After that, the brushes are found that are worn, remove them from the structure, put others in place.
It is best to use carbon-graphite brushes, which are the best and not too expensive option. Apply graphite brushes, which are distinguished by a long service life. The coal ones are relatively short-lived, but they come into contact with other parts of the perforator at a qualitative level.Back to table of contents
How to properly disassemble the tool holder
First, it is necessary to determine the type of perforator cartridge installed in the device. Different models are equipped with different cartridges, which can be a collet SDS, quick-release and cam. In the presence of a cam chuck for fixing the drill, a key is used, which is not in the collet and quick-release collet chuck.
The procedure for disassembling the punch: knocking on the screw head to loosen, loosen the screw with a screwdriver, clamp the cartridge in a vice and spin the spindle.
Beginning to replace the cartridge, be sure to learn how to fasten 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 a simple replacement method, you can do with a hammer, screwdriver or key. Analyzing the tool holder, perform the following types of actions:
- To loosen the screw fixation, you need to knock on its head.
- It is necessary to unscrew the screw using a screwdriver.
- Chuck clamped in a vise and scroll the spindle.
Recommendations for disassembling and assembling a punch
To troubleshoot the instrument with your own hands, all actions must be carried out according to a certain order:
If the visual inspection of the punch does not show damage, then the next step is to disassemble it.
- It is required to carefully remove the switch lever, because improper disassembly may be associated with breakage of fragile parts.
- The rubber cap is disconnected, which is sometimes changed to protect the barrel of the device.
- In the presence of a collapsible cartridge, you must act as follows:
- remove the brush;
- unscrew the screws;
- remove the case;
- disassemble decaying parts and parts;
- make a follow-up inspection;
- make the replacement of faulty elements and their subsequent lubrication.
Often, the tool holder is disassembled, debugging or replacing parts and spare parts, lubricating or cleaning.
Disassembly is based on knowledge of the design of the cartridges. When the tool is in a disassembled state, there is always the question of how it can be assembled. This is done according to the instructions explaining how to disassemble the device, only in reverse order.