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:
VIDEO
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
Good afternoon, masters!
The Skil 4260 jigsaw has broken. Broken part: U-shaped piece, inside which there is a gear and the whole mechanism of the file holder. There are three tabs on it, the middle one is broken.
The service center said that all this structure is assembled and will cost more than 1000r. Can you please tell me if it is possible to find this U-shaped plate separately for sale somewhere (in St. Petersburg).
From the picture, it is also not clear what kind of article it has and it comes separately or assembled
Your masters got sick, however, just like ours in the Moscow Boshevsky service. In reality, such a spare part costs 600-something rubles in a store specializing in the sale of Bosch tools, spare parts and consumables (and Skill, respectively). I know because I changed it myself in my 4260. Here in the spring I wrote about it: ”> Paying for a spare part (especially a unit in which, as it turned out, there is something to break apart from what happened to me) 50% of the price of a new jigsaw is, in my opinion, bestiality. And if you take it to a service center, then the old repaired one turns out to be 50 rubles cheaper than the new one. Plus for the diagnosis, to give an answer to how much the repair will cost, they took 120 re - so it turns out that the old one is generally more expensive than the new one. I'm losing weight, in short.
I broke the part into which the canvas was inserted, and unfortunately deciding that there was nothing else to break, I threw out all this junk from the old assembly, with the exception of the plastic parts of the clamp and brass bushings (in your picture, there are pointers from number 836) in which a large gearwheel is spinning. ...
If there is a desire and opportunity, it is better to buy a Makita or something else decent for a couple of thousand, and leave this guano as it is and not be fooled! When I was buying this unit, a saleswoman in a Boshevsky store told me, saying, “Skill - you need to be gentle with it, don't press hard - prices for spare parts hoo”. F))
Knowledge typical power tool malfunctions is necessary for both the home craftsman and the professional. Knowing how to correctly identify the source of the problem and quickly repair the tool saves time and money. And knowing the reasons leading to a breakdown allows you to act proactively, preventing such modes of operation in which the tool will be prematurely damaged.
The jigsaw is a versatile power tool suitable for working with a variety of materials. It can work with wood, metal, plastic, etc. Such versatility is ensured by the use of a huge variety of saw blades, which are available for all occasions. During operation, the jigsaw and its components are subjected to high mechanical stress. The experience of service centers for the repair of power tools, as well as professional advice help to identify main malfunctions of jigsaws and causes their occurrence.
Support roller breakage ... The saw blade, fixed in the jigsaw, is its main working element that performs useful work. The jigsaw is attached to the jigsaw support roller, and this roller bears the greatest load when cutting the material.Reasons why the support roller can be overloaded and prematurely damaged:
using a low-quality file;
using an overly blunt file;
using a file that does not correspond to the nature of the work being performed.
As a result of overheating, the roller may simply jam. Otherwise, the roller itself may be cut with the saw blade.
Methods for preventing this breakdown
use only high-quality components;
change the canvases in time, without waiting until they become very dull;
use canvases that correspond to the nature of the work performed;
operate the jigsaw carefully, avoiding excessive cutting forces, and follow the manufacturer's recommendations.
Breakage of the blade fixation unit ... Toolless saw blade retention is a convenient feature found in many jigsaw models. Allows you to quickly change the cutting tip without wasting a lot of time. The problem is that this unit can fail due to the frequent ingress of dust generated by the jigsaw during operation.
Preventive measures
periodically clean the web mount from dust;
lubricate it, if necessary, with WD-40 greases;
use the ability to connect a vacuum cleaner or dust collector to a jigsaw.
Damage to gearbox components ... The reason is all the same dust that can get inside the gearbox through the ventilation holes and lead to breakdowns. As in step 2, a vacuum cleaner or dust collector can help.Kink or bend of the support rod ... Breakdown can be prevented by developing a culture of accurate power tool handling. In particular, the jigsaw must not be dropped; try to avoid collisions of the body and stem with protruding parts of the processed material.Broken teeth on the jigsaw collet ... Occurs when an attempt is made to tighten an incompletely inserted file. Here, nothing but mindfulness will help.Premature wear of the armature worm gear jigsaw and its main helical gear. It occurs when the cutting process itself begins even before the engine reaches full speed. Warning: Do not bring the jigsaw blade close to the material to be cut until normal travel speed is reached.
Video (click to play).
By following these simple tips, you will extend the uptime of your jigsaw.
