If during operation the device makes extraneous sounds, this means that the bushings or the bearing are worn out. To fix this, you will need to disassemble the electric motor, and then check the integrity of the bearing and the wear level of the bushing. The anchor should scroll freely, there should be no friction or distortion. These devices can be bought at a building supermarket and replaced by yourself.
VIDEO
In all cases, it will be necessary to replace the defective elements of the gearbox. All of the above steps must be followed carefully. The screwdriver must be disassembled in a clear sequence, otherwise any of the parts may be lost.
Anyone can repair a screwdriver, you just need to correctly identify the faulty element.
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They brought PT Devolt702 ku, s, type 1 for repair. I looked at Dyatko in detail, it is there but type 2, the question arises, are their anchors interchangeable? If anyone knows please tell me.
I decided to repair the Soviet drill IE-1036E. It turned out that her anchor had a break in several windings. While I was looking for a replacement, I opened a second drill, IE-1032-1, at its anchor the tip of the drive turned out to be broken off. Now I'm looking for as many as two anchors, and different ones! I looked at a lot of things, the replacement revolves around AEZ products, but I can’t find a catalog with a list of the main parameters of anchors.
Collective farm! Native brushes cost 1000 rubles in the Hilti service
Dear guests of my channel, I ask you to be mutually polite! Offensive posts will be deleted and the user will be banned! Thank you for your attention! Now the answer. Well, “collective farm” is not an insult to me; the collective farm feeds us all in the city! Well, about your advice to buy this for 1000 rubles for 5580 tenge, we went the wise way and bought for 500 tenge from Makita CB-440 this is 90 rubles for rubles! Such a good savings, especially since branded HILTI brushes are not always on sale!
Excellent Shurik, for 6 years he has never refused, he just changed the brushes
Great video. Another thumbs up from me for your video. Come visit I will be glad.
Repair - there is never too much about repair! Great video, thanks)))
Yes, Askhat! Mastery cannot be taken away from you! Everything in your hands is transformed! Not a man, but golden hands. Well done.
We continue the topic of repairing a screwdriver). Thanks for the helpful video on repairing a screwdriver)
Present give subscribe189, subscribe also channel I am friend, thank you
Hey, let's be channel friends! I already liked and subscribed!
Situation - the tool fell from the stepladder, the body cracked at the base of the handle. everything turns fine, but it is inconvenient to work)).
In this regard, a number of questions.
I looked at something in the store (nah) before the holidays, but it only crushed my feelings more.
The last thing you need a tool for..
Thanks for the feedback. I'm waiting for Hilti to open after NG holidays
If you have something to offer, a repair there, or a new screwdriver at a competitive price - please, I'm ready.
Overview of the repair of brushes of the HILTI SFC 14-A screwdriver. We installed Makita CB-440 brushes
George Gaev 3
Collective farm! Native brushes cost 1000 rubles in the Hilti service
Ashat Khalilov 3 หลายเดือนก่อน
Dear guests of my channel, I ask you to be mutually polite! Offensive posts will be deleted and the user will be banned! Thank you for your attention! Now the answer. Well, “collective farm” is not an insult to me; the collective farm feeds us all in the city! Well, about your advice to buy this for 1000 rubles for 5580 tenge, we went the wise way and bought for 500 tenge from Makita CB-440 this is 90 rubles for rubles! Such a good savings, especially since branded HILTI brushes are not always on sale!
Excellent Shurik, for 6 years he has never refused, he just changed the brushes
Fishing, life hacks and crafts for fishing ปีที่แล้ว
Great video. Another thumbs up from me for your video. Come visit I will be glad.
Natasha PIK NIK Video ปีที่แล้ว
Repair - there is never too much about repair! Great video, thanks)))
Yes, Askhat! Mastery cannot be taken away from you! Everything in your hands is transformed! Not a man, but golden hands. Well done.
We continue the topic of repairing a screwdriver). Thanks for the helpful video on repairing a screwdriver)
Present give subscribe189, subscribe also channel I am friend, thank you
Anastasia Shapurko ปีที่แล้ว
Hey, let's be channel friends! I already liked and subscribed!
Overview of the repair of brushes of the HILTI SFC 14-A screwdriver. We installed Makita CB-440 brushes
George Gaev 3
Collective farm! Native brushes cost 1000 rubles in the Hilti service
Ashat Khalilov 3 หลายเดือนก่อน
Dear guests of my channel, I ask you to be mutually polite! Offensive posts will be deleted and the user will be banned! Thank you for your attention! Now the answer. Well, “collective farm” is not an insult to me; the collective farm feeds us all in the city! Well, about your advice to buy this for 1000 rubles for 5580 tenge, we went the wise way and bought for 500 tenge from Makita CB-440 this is 90 rubles for rubles! Such a good savings, especially since branded HILTI brushes are not always on sale!
Excellent Shurik, for 6 years he has never refused, he just changed the brushes
Fishing, life hacks and crafts for fishing ปีที่แล้ว
Great video. Another thumbs up from me for your video. Come visit I will be glad.
Natasha PIK NIK Video ปีที่แล้ว
Repair - there is never too much about repair! Great video, thanks)))
Yes, Askhat! Mastery cannot be taken away from you! Everything in your hands is transformed! Not a man, but golden hands. Well done.
We continue the topic of repairing a screwdriver). Thanks for the helpful video on repairing a screwdriver)
Present give subscribe189, subscribe also channel I am friend, thank you
Anastasia Shapurko ปีที่แล้ว
Hey, let's be channel friends! I already liked and subscribed!
They brought a rootless ,, screwdriver ,, the marking is overwritten, apparently China. The ratchet works, from the smallest load, you can fix it, but no, so take it in the spare part.
I checked the charger, batteries, engine, button, everything is in normal working condition.
Unscrew the screws securing the electric motor to the gearbox (if the motor is not fastened with screws, then turn the gearbox relative to the motor, the gearbox is in front - the motor is behind, clockwise)
The three main reasons that lead to the fact that you have to do the repair of a screwdriver with your own hands are:
Schematic diagram of a screwdriver.
Any screwdriver has the following main elements in its design:
Engine.
Reverse.
Reducer.
Speed controller.
A speed controller transistor that is connected to a heatsink.
Repair of the device most often has to be done due to the occurrence of various malfunctions that are typical for cheap devices and expensive ones. Among them stand out:
When a screwdriver breaks down, the main percentage of malfunctions is the battery.
Failed battery.
Broken power button.
Burnt anchor.
The presence of whistles and various squeaks during operation.
Reinforced tapping of the chuck.
The impossibility of regulating the speed of the screwdriver.
Screwdriver reverse does not switch.
The machine motor does not stop rotating after the screwdriver is turned off.
The device turns on for a fraction of a second, followed by wedging.
Consider the features of eliminating each of the listed faults.
In order to make sure that the battery of the screwdriver is broken, it must be checked with a multimeter.
The battery should first be checked before it can be replaced. The battery should be checked by the usual measurement of the voltage level using a multimeter at the terminals of the device. You can also check with any other tester. In this case, the output voltage of the batteries in working condition should be observed if they are charged. The values of 12V, 18V, etc., indicated on the battery cases, must be exactly observed. If this condition is not met, the device should be replaced.
Possible malfunctions of the screwdriver charger lead to the need to disassemble it and then check it using a tester that has already been used. Each battery included in the accumulator must be subjected to a similar test. After identifying the defective elements, you should buy special elements of the same type with the same capacity in the store in order to install them in the places of the previous ones, replacing the old ones with new ones.
When repairing the power button, you must have a special skill and relevant knowledge in the field of electronics. Disassembly of the apparatus should be carried out with the utmost care and caution. Otherwise, opening the device may cause parts of a certain type to easily fall out of the screwdriver.
It is best to first sketch the order of the different springs, contacts and screws.
After you have made sure that the cause of the breakdown is in the battery, it will need to be disassembled.
When the case of the device is opened, the device must be checked for the presence of contacts in it that have darkened. If there are any, it is necessary to clean them with sandpaper.
When the switch is already repaired, it is possible that the device will not regulate the number of revolutions if a smooth pull is made on its trigger. However, instrument functions are not lost when the trigger is fully pressed.In this case, the malfunction itself is associated with the adjustment circuit. In this case, a complete replacement of the switch is carried out.
If the device does not have a reverse, then it is replaced with a reverse switch, but you can try to repair it. To this end, the repair of the reverse resembles the repair of a switch button. The switch cover is carefully lifted up. Then the contacts are checked, cleaned and reassembled.
If burnt or deformed contacts are found under the cover, the reverse must be replaced. With the option of a button, when the reverse is assembled in its body, that is, inside it, the button changes completely.
In the event that when the button is lowered, the screwdriver motor continues to work, then the button will have to be changed.
When the button is lowered, the motor continues to rotate, which did not happen before, then the button changes completely. The reason for the continued rotation of the button may be its release, which was not observed before. This requires the button to be completely replaced, or it is necessary to replace the transistor separately.
You can check the speed controller using a multimeter set to the circuit ringing mode. The speed controller circuit is not included in the overall circuit, acting as a result of fully pressing the button. This is where the contact closure begins. Two wires are connected to the electric motor of the screwdriver, the same number goes to the battery button.
The power button is connected to the control element or field effect transistor through 3 wires, which is located outside the screwdriver housing. It is necessary to connect the probes in order to test the supply connected to the electric motor and to the wire that is the input.
If possible, the probes are connected not only to the motor wire of the device, but also attached to the reverse input contacts. The device can show whether there is a contact or not. Then, in a similar way, all measurements are carried out for another wire, which is the input. After that, you should move the reverse lever to repeat the measurements. If there are no contacts, then these changes affect the button.
The cause of the breakdown is also worth looking for in the brushes of the screwdriver motor.
If all the elements of the device are in good condition, which was shown by the operations that were carried out earlier, then it is imperative to check the condition of the motor brushes. This can be done by disconnecting the engine from the button by connecting a multimeter to its wires through the probes.
If there is no low resistance in the circuit, then this may indicate that the brushes are worn out. This does not exclude the breakage of the anchor, which can occur in rare cases. Winding breaks may also occur. In this case, a complete replacement of the engine is performed. If only the brushes are worn out, then you can restore the screwdriver motor with your own hands.
To restore engines, for some models of screwdrivers, only the brushes are changed, and the element is not completely disassembled. To repair other models, the rear cover of the engine is separated with brushes from its body. For this purpose, the rolling of the cover is bent without touching its edges, because they must be returned to their original place after the assembly is completed.
Brushes with flexible wire are connected on the basis of a spot welding method for attachment to the holder. It is possible to solder wires for new brushes. For this purpose, you can use only refractory solder.
Bearings can wear out or become clogged when working with a screwdriver for a long time.
Before starting the assembly of the electric motor of the screwdriver, with the help of a thin wire, which serves as a clamp, each brush is retracted in the brush holder, the cover is installed in its original place. At the same time, the brushes release and go around the case along the edges, which contributes to the best pressing of the back cover.
If the screwdriver works for a long time, then this may be accompanied by a process of curvature of the shaft related to the gearbox due to heavy loads and pressure on the tool.The cartridge, screwing onto the shaft, sometimes causes a strong beating during operation of the device. The support sleeve or shaft bearing can be severely worn. As a result of damage to the bushing or only the bearing, and not the shaft, only they are replaced.
Sometimes the engine cannot be started for a certain fraction of a second, that is, it stops abruptly. This could be caused by a gearbox failure. Often a malfunction occurs due to a broken pin that serves as a fastener to the satellite. It is possible to replace the carrier or the entire gearbox, which can fail if the gear teeth are worn out.
If, after carrying out all the above operations, no malfunctions were found in the device, then it is necessary to check the condition of the armature and the serviceability of the motor brushes. In this case, the engine should be disconnected from the switch button, and then measure the resistance by connecting a tester of any kind to the engine wires. If there is no resistance in the circuit, then this may indicate that the brushes are worn out. In this case, malfunctions in the motor armature are not excluded, which may be due to a winding break. However, these types of failures may be rare.
VIDEO
Video (click to play).
If the motor armature is completely burned out, then the motor of the device is subjected to a complete replacement. If only the motor brushes are worn out, it is better to repair the device yourself. Before starting repairs, gently open the screwdriver motor housing so as not to damage its edges. All stages of work related to the replacement of brushes are indicated above. It is possible that the armature bushings were worn out due to the magnet, which came off and began to come into contact with the anchor. By dropping a drop of special oil on the bushing, you should turn off the engine to wait until the oil has spread to all bushings. However, it still requires replacement over time.
