If the jigsaw has a classic screw fastening of the saw, then it will not be difficult to repair it. It is a durable and time-tested design, you can use screws for a Phillips screwdriver or a wrench. The clamping units are standard, it is not difficult to find a replacement for an extremely worn part. There is a problem with thread wear, but in this case, you can cut a new one.
The tool is easy to disassemble. The body is divided into two halves, allowing access to all parts of the mechanics. The first step is to remove dirt and replace the grease, after which you can start repairing.
Let's note right away that there are no spare parts in stores. You can find the corresponding part by purchasing a broken tool at the flea market. Parts from other devices and mechanisms are often suitable. For example, jigsaws with a round stem are the easiest to repair. A round bushing is selected, if necessary, the inner diameter is increased by packing on a cone. This repair allows you to eliminate the runout and backlash of the rod, to improve the quality of the cut.
If necessary, unique fixing clips are made (depending on the jigsaw model). Copper foil can be used as small spacers when installed in a case.
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In inexpensive jigsaw models, the stem is a thin metal plate of complex shape. Under excessive load, it can simply burst. The part is replaceable, some jigsaw models are compatible with others. The device must be carefully disassembled, fixing the process in the photo in order to reassemble. Then, with the part removed, go to the market or store. Then install the part and apply grease.
For most models of jigsaws, if we are not talking about frankly budgetary ones, the kit comes with a pair of pullers ... To replace them, it is enough to open the case: in the back of the engine, on the contact block, the necessary elements are immediately visible. Repair is elementary: old parts are carefully removed, contact pads are cleaned of dust, wiped with alcohol. After that, it is enough to install new brushes.
You can purchase a replacement part both in specialized points and in stores selling spare parts for electronic devices. The body of the jigsaw opens, the corresponding part is freed from the wire leads. This should often be done after unscrewing the terminal block screws. Modern models are not forced to use a soldering iron. After removing the old, the new part is installed and connected.
It is better to disassemble the case and dismantle the button before going to the store in order to buy exactly the same part in the seat.
Jigsaw start button
Rather rare breakdowns include failure of the engine thermal fuse. The part is replaced. Sparks can be observed, which indicates not only a heavy load, but also wear of the brushes and a lack of lubrication. Therefore, periodic maintenance is the key to the reliable operation of the jigsaw.
When carrying out any repairs, precautions should be taken. The jigsaw must be disconnected from the mains. The first thing to check is the health and condition of the power cable, plug, contact in the socket. Some jigsaw models are equipped with a fuse located in the plug. This element is also worth inspecting and checking for serviceability.
Husband's handbook for an hour. Return of forward motion. Replacing the rod of the Fiolent jigsaw with your own hands.
14.06.2014
However, the conversation will not be about the advantages or disadvantages of this device, but about how to fix one of the most common jigsaw malfunctions without resorting to paid services of workshops for the repair of this equipment.
Let us explain what kind of malfunction we are talking about. If, during work, you press on the tool with a force greater than the allowable one, then you can corny break the rod on which the working tool is held - the file. Photo 1. However, there is no need to be sad. Using the instructions below, the DIYer will independently replace the damaged part, which can be found in any store that sells spare parts for the power tool.
Since disassembling something is rarely difficult, it makes sense to omit this point, noting that during this process it is advisable to remember or mark the location of the mating units and parts. Photo 2.
1. Compare the part to be replaced with the purchased one (it is better to do this when purchasing) for the coincidence of geometric dimensions. Photo 3.
2. Make sure that the oval groove of the stem fits loosely over the disk roller, if necessary, enlarge it with a personal file or a velvet file, followed by sanding with an emery cloth.
3. Install the counterweight and lubricate the mechanism liberally. Photo 4.
4. Put the bushings, the oil seal on the stem.
5. Install it so that the bushings sit in place and the disk shaft fits into the oval part of the stem. When doing this, pay attention to the location of the truncated bottom of the stem. Photo 5.
6. Put the clamps in place, while the spring of the clamp standing from below should be in the slot, as in photo 6. The task of this spring is to provide reciprocating movement of the stem. Photo 7.
7. Install the counterweight cover, finally secure with screws. Photo 8.
8. Apply grease to the roller guide on the file holder and secure it to the rod so that the edge of the holder fits into the small groove of the rod photo 9 and 10.
9. For better centering of the mating parts, place the file in the holder and slightly tighten the screw that secures the file (photo 10).
10. Ensure that the holder fixing screw is as tight as possible. Displacement of the saw holder in relation to the rod during operation is unacceptable.
11. Install the cover of the rod drive, the file and enjoy the flawless performance of your jigsaw restored by your own, as it turned out, golden hands. Photo 11.
And remember, use your common sense when operating a power tool.
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Among the hand tools used in the household, the jigsaw is the most popular. This is an electrically driven device designed to produce a curved cut.
Demand determines supply. The power tool market is represented by a wide range of both household and professional models from domestic and foreign manufacturers. Any equipment requires technical maintenance and repair if necessary.
Using examples of real breakdowns and methods for their elimination presented in this article, the user will learn about the repair of jigsaws from different manufacturers in general.
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The design of jigsaws from different companies is not much different. It consists of a body, a sole, a saw blade, a cutting tool mechanism, a gearbox and an electric motor that drives the working body of the tool.
The difference in the models of a particular manufacturer lies in the design features of some units. It is natural that the malfunctions and the reasons for their occurrence are also identical.
Knowing the most common power tool failures and the preventive measures to prevent them will help both the novice DIYer and the experienced professional.
Among the typical failures of electric jigsaws are:
Sawing curvature.
Change in shape or destruction of the support roller.
Breakage of the cutting tool attachment.
Damage to the gears of the reducer.
Destruction or bending of the support rod.
Broken teeth on the jigsaw collet.
Early wear of the armature worm gear.
The jigsaw is designed to perform rough curvilinear cuts, so it's not worth talking about the ideality of sawing. Although in models of hand tools from different manufacturers, this indicator is also different. When using cheap models, they don't pay much attention to this, and the cut turns out to be completely crooked. You need to deal with this in service centers, but you can try to get rid of the curvature at home.
The platter roller can break if you use poor quality saw blades or a blunt tool. The use of a cutting tool in an inappropriate load mode. This can result in a jammed or cutting of the platter roller.
To avoid such a problem, you need to use well-sharpened cutting blades of acceptable quality, observing the optimal cutting conditions and following the recommendations of the manufacturer.
As a rule, almost all models of jigsaws are equipped with a toolless saw blade fixation unit. This simplifies the process of changing cutting tools. But the operation of the mechanism in conditions of constant dustiness leads to the ingress of wood chips into it, and this leads to the failure of the device.
In order to exclude a breakdown of the unit, it must be constantly cleaned of dust and lubricated with a special compound such as WD-40. During operation, it is necessary to use a vacuum cleaner by connecting it to the tool.
Failure of the gearbox elements is the result of wood dust entering through the ventilation holes.Here, as in the previous case, you cannot do without a dust collector.
Breakage or bending of the support rod occurs during the careless use of the power tool. This can happen when it falls or unintentionally collides with the jigsaw body, directly the support rod with protruding elements of the machined surfaces.
Tooth decay on the collet of an electrically powered jigsaw can only occur through the fault of the performer. This is the result of an attempt to inadvertently tighten the not fully inserted cutting blade.
The armature worm gear will not last long if the cutting process is started before the tool motor reaches its optimum power. To prolong the life of the mechanism, do not start work before reaching full engine speed.
It is worth paying attention to the domestic production of the Interskol jigsaw. It is produced in Izhevsk. For domestic use, this is a perfectly acceptable option. It has many positive qualities, and the most impressive is its low cost. But there are also disadvantages.
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This is the curvature of the cut. What is the problem and can you get rid of it? The blame was the quick-release fastening of the file. The fact is that it is designed for the maximum saw blade thickness. All thinner cutting tools in the mount just dangle.
How to get out of this situation? It is necessary to replace the quick-release mount with a simple device with ordinary bolts. It is not difficult to make it. You need to take a square rod, cut off two blanks, drill holes in them and connect with two M5 bolts with nuts. The procedure for attaching the saw blade will be somewhat more complicated, but the tool will produce an even cut.
In addition, you can modify the very design of the tool and limit the movement of the file in the transverse plane.
take sheet aluminum and cut the plate to fit the sole of the jigsaw;
in the front part of the workpiece, it is necessary to make a cutout according to the size of the working area of the cutting tool. File all edges; make bevels on the inner longitudinal edges of the cutout;
from plexiglass, you need to cut a plate to the size of the working area of the saw blade. File all sharp edges and make reverse bevels on the outer longitudinal edges;
the aluminum plate must be marked for its installation on the sole of the jigsaw. Drill and chamfer holes for the installation of countersunk head screws;
a piece of plexiglass must be inserted into an aluminum plate, after having made a cut at the place of its position.
The saw blade will now be limited in lateral movement almost in the cutting zone during operation, which will give it even greater straightness.
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Another, no less popular manufacturer of domestic power tools, is the Smolensk company Diold. Electric jigsaws are distinguished by their low price and rather decent quality. For homework, this is a perfectly suitable budget option.
It also has points worth paying attention to. The first is the support roller. Over time, and this is about a year, it begins to lose its round shape. The reason is the material of the video or the technology of its production. It has insufficient hardness.
Its repair is to replace it. Still, it is better not to reinvent the wheel, but to purchase an original video from the manufacturer or take the tool to a service center, especially if it is under warranty.
If this option is not suitable or impracticable, then you can reanimate the jigsaw with the help of available tools. To do this, you need a regular M5 bolt with a nut. In this case, the bolt will serve as an axis, so you need to grind off the thread on it, and the nut with a roller, in it along the generatrix it is necessary to cut a groove along the thickness of the saw blade.
It is ideal to do this on a lathe, but you can also use a tool that is at hand, such as a drill and an angle grinder disc.The disk must be clamped in a vice, the bolt and nut - in the drill and cut into a groove. The repair option is not ideal, but it has the right to life, as it has been tested in practice.
Another nuance in using the Diold jigsaw is the ingress of wood dust into the start button. This happens due to the lack of tightness, and dust, getting inside the button, prevents the passage of current. The solution to the problem will be periodic, at least once a year, cleaning the contacts.
One of the best jigsaws on the world market are the models of the German company Metabo. Everything is good in him. High power, aluminum body, pendulum device. In addition, the tool is crammed with electronics, which allows you to customize the jigsaw to individual programs for each type of cut. And the cut is just perfect both in quality and straightness. The Metabo power tool is the best jigsaw today.
But not eternal. Breakdowns happen here too. The reasons can be very different. But as practice has shown, the weak point is mechanics. After significant loads, and in particular, cutting metal, it may fail.
Typically, the axle on the bearing bracket, arm and stem will not support. To restore the tool, it is better to purchase original spare parts, and assemble them at a service center by specialists.
When self-assembling the Metabo jigsaw, it is imperative to apply Castrol LMX grease to all rubbing surfaces with the addition of RiMET grease in a ratio of 3: 1.
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Consider another budget option for a jigsaw - the Crimean Fiolent. This is a perfectly acceptable model both in terms of price and quality. There are two problems in the operation of a jigsaw. This is a possible failure of the stem during improper handling of the tool and insufficient or illiterate lubrication.
In the first case, in order to avoid this damage, it is enough to carefully and carefully handle the tool. But if this does happen, you will have to replace the damaged stem. For this you need:
Remove the housing cover by unscrewing 4 screws.
Remove the rectangular washers and retaining rails from the stem.
Unscrew 4 bolts and remove mechanism cover. Below it is the flywheel and the stem itself.
Unscrew 2 screws each, remove the upper and lower stem holders. The latter is with a spring, so you need to clean it carefully.
Dismantle the destroyed stem with guide washers.
Lubricate the flywheel and eccentric with a special gear lubricant.
Put the guide washers on the new stem and install in place.
Attach the saw blade holder to the bottom of the stem.
Install the upper and lower holder, screw on the mechanism cover and install the washers and retaining rails.
Insert the cutting tool and test the jigsaw at idle speed and under load. If the check shows no abnormalities, install the housing cover.
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In the second case, everything is much more serious. It would seem, what is difficult about lubrication? But due to the fact that the tool constantly works in extreme conditions, the ingress of wood dust into the device cannot be avoided, it is necessary to carry out service work according to the intensity of operation, but at least once a year.
All mating parts and assemblies need to be lubricated. To do this, you need to disassemble the jigsaw. But if in the first case, for example, you limited yourself only to dismantling the stem, now we disassemble the tool completely and re-lubricate all the rubbing surfaces of the parts.
For lubrication, the manufacturer offers Litol 24, but it will not work in the jigsaw gearbox, due to its thick consistency, therefore, as a rule, it is lubricated with oils. You can combine Litol 24 with Feol 2U graphite grease in a ratio of 3: 1.
However, it should be borne in mind that now the fluidity of the lubricant mixture is higher, and after some operating time it will begin to enter the engine rotor. The reason for this is left-hand drive. When the rotor rotates, the lubricant mixture is captured by the teeth and is fed to the rotor like a screw. The oil separator installed inside the motor housing does not fulfill its function. In theory, it should throw away the incoming mixture, but in practice this does not happen. This is evidence of the imperfection of the design proposed by the manufacturer.
To avoid this problem, some work needs to be done. Or rather, put the oil separator not inside, but outside the motor housing. At the same time, in order for the oil separator snail to work and discard oil, it is turned over.
One more nuance. The bore diameter is Ø 9 mm, and the diameter of the outer part of the oil separator is Ø 9.2 mm - it ideally blocks the passage for the lubricant mixture. But when installing it, you need to apply a certain effort and a nozzle in the form of a pipe of a suitable size.
In addition, it is advisable to install a dust washer on the rear bearing of the armature. It will protect it from wood dust and extend its service life.
After that, you need to assemble the oiled jigsaw and test it for performance. After 10 hours of operation, the tool should be checked for grease penetration into the motor housing. If everything is done correctly, then such an option is excluded.
And of course Bosch. The power tool of this manufacturer is distinguished by the high quality of components, assembly and a long service life, provided that it is treated with care. He also has a drawback - the price. Moreover, both the product as a whole and the spare parts are expensive.
It should be noted that the Bosch tool practically does not break, but there are some nuances that appear during long-term use. For example, wear on the brushes of the electric motor, failure of the speed controller or the device for holding the saw blade. There are accidents and more complicated ones, failure of a rod or an anchor, but this is, rather, from incorrect handling.
As in the case of Metabo, Bosch jigsaws are best repaired at service centers. There they will install original spare parts and give a guarantee for the repair performed. But this is an expensive pleasure.
After reading the article, the user gained theoretical knowledge about jigsaw failures. Now, in the event of a breakdown, he will be able to determine the cause and make the right decision, and maybe even perform minor repairs.
Video (click to play).
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