Working without a cover
Craftsmen sometimes remove the protective cover from the angle grinder. This should not be done under any circumstances. The guard is designed to protect the operator from flying pieces of abrasive in the event of a disc break. The circle can bite into the material being cut and break it. Pieces that fly in all directions can seriously harm health or even have fatal consequences..
Using an angle grinder with a damaged cable is very dangerous. If the wire contact is not stable, the angle grinder may shut off during operation, and the operator with one hand will try to pull the cord to close the circuit and continue the cut. When the current flows to the angle grinder again, and the start button is clamped, the master may not hold the device in one hand and, inadvertently, harm himself or others..
an angle grinder in which there are obvious problems with the power cord, it is better not to use until they are fixed.
Incorrect cutting direction
An angle grinder should only cut any material so that sparks fly towards the operator. Reverse rotation of the disc is not permitted for safety reasons. But some owners themselves redesign the angle grinder so that the flow of sparks is directed away from them. On the one hand, it is convenient because the cutting line is visible, but from a safety point of view, this cannot be done.
The fact is that when sparks fly away from the operator, the rotation of the disk is directed towards him. In the event of a bite of the abrasive wheel, it will fly directly at it. At speeds over 10,000 rpm, the disc can kill a person. Not a single master working with an angle grinder can be sure that the wheel will not bite while working. For this reason, the angle grinder should only be used if the direction of rotation is directed away from the operator and not towards him..
5 mistakes when working with an angle grinder you shouldn’t make
The angle grinder is indispensable for most DIYers. Thanks to this tool, you can significantly speed up the process of cutting or grinding various surfaces. However, an angle grinder is a very dangerous tool. When working with it, you must observe safety precautions and avoid mistakes that can lead to injury. Among the most potentially dangerous and at the same time frequently encountered errors, five main ones can be distinguished, which will be discussed below..
The technical documentation for the angle grinder always indicates which maximum disc diameter is allowed to be used to work with a particular device. It is impossible to work with discs of an increased diameter on an angle grinder that is not intended for this..
The fact is that to fix such a disk, you will have to remove the protective casing. This increases the likelihood of operator injury from flying debris. And the abrasive wheel more than the permissible diameter can almost certainly fly apart. All angle grinders working with small discs up to 125 mm in diameter are capable of about 12,000 rpm. With this rotation, the large disk will fly apart at any moment. Circles up to 180 mm operate at a frequency of no more than 8,500 rpm, and the version with a diameter of 230 mm is designed for rotation of about 6,500 rpm.
Insufficient retention of the cutting wheel can cause it to break during rotation. At high rpm, the disc will loosen and eventually break. Always tighten the locking nut securely and check the backlash of the abrasive wheel before starting the device..
Taking into account everything that is described above and strictly observe safety precautions, you can not be afraid to work with an angle grinder. This tool is often one of the most needed among the entire arsenal of the homemaker, but do not forget that it is also the most life-threatening..
How to unscrew if stuck?
I will tell you several ways that will 100% help you unscrew this element, well, let’s go:
- It’s trite with your hands. Often you simply do not have enough strength, it is enough to call a person “more powerful” and everything can work out. I will say this in 80% of cases, unscrew it by hand. YES, and you need to twist it again with your hands, tightly! IT’S ENOUGH!
- Rope and screwdriver (another lever). Sometimes they also use an old alternator belt or timing belt. What we do is twist a loop around the filter, tighten it with a screwdriver, tightly. And we are trying to unscrew. The main thing is that the rope or belt does not slip.
Then there are barbaric but powerful methods. Most importantly, they are dirty, that is, by any means you get dirty in oil, if you are not afraid, then they are for you.
- A hammer and a long and sturdy screwdriver. Actually, this method is used to unscrew most of the stubborn filter elements. Since the walls of the element are soft, it is usually aluminum, or tin, and other soft metals. It is very easy to break through (just like a tin can), What we do – we hammer in a long and strong screwdriver through and through, that is, so that it goes in on one side and exits on the other. And then unscrew it like a lever. The most important thing is that everything can be done without a special key, and in fact with the use of those tools that are always in the garage. Minus – only dirty hands, because part of the oil is always inside.
- Hammer and chisel. This is generally the method of what they say “ATAS”, there is nothing to explain here, we take a chisel and “crap” on it with a hammer, the most important thing is to beat closer to the bottom, to the place of attachment, and counterclockwise. The body, of course, will be crumpled all over, but the most important thing is to unscrew it. The downside here is not only that you can get smeared, but also that you can touch the engine block with a chisel, I personally advise you the method with a screwdriver, yet it is less dangerous.
As you can see, nothing complicated, you can do without a special key by simply punching the case with a screwdriver.
Now we are watching a small video.
And that’s actually all for me, read our AUTOBLOG.
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Why you can’t leave the old filter?
A very common question – all because when the engine is running, chips are formed (banal wear), the oil also burns, becomes dirty, dust can also penetrate inside. All this “business” is deposited on the filter (on its cleaning paper surface). If you want, the filter is the “motor liver”. If it were not for it, then the engine wear was much faster (scientists counted up to 5 times).
How To Free Up An Angle Grinder Disc That’s REALLY Stuck
For a service life of 10 – 15,000 km, it clogs up almost completely, and it is IMPOSSIBLE to leave it to work with new oil! It is MANDATORY to install a new filter element. It is corny that there will be not enough oil pressure, and the engine will suffer from oil starvation..
So the air filters are not so critical (although I think they also need to be changed), and it’s very easy to unscrew them. But it is MANDATORY to change the oil.
How to unscrew the oil filter (without using a wrench). What if it doesn’t twist off? Required instruction
Some of us have garages, if there is a hole in it, then this is almost 100% of the conditions for doing a routine technical inspection with our own hands. This is an oil change in the engine, replacement of the air and oil filter, and the actual cabin filter, if necessary, and spark plugs. These are prerequisites for routine maintenance. Let’s just say – many save on maintenance and do not change the air filters (although I think this is not correct), but the oil filter must be changed! BUT there is a big problem – if it is tightly twisted, then it is very difficult to unscrew it! How easy it is to do it yourself, today is a small instruction …
Indeed, guys, I personally encountered such a problem on my FORD, the oil filter was so tightly twisted that it was almost impossible to twist it with your hands – EH, and I suffered then. The main reasons for this problem:
- When changing the oil, the filter was tightened well, many services do this with special keys.
- He got used to it from time to time. This also happens, high temperatures, and getting a little oil on the gasket, they just “stick” it to the engine.
Actually, these are the main two reasons, in any case, you climbed to unscrew it – then it does not lend itself, the inconvenient location complicates this process (as a rule, it is below, almost under the engine). Also, often hands (or gloves) are already in oil, so it is even more difficult to unscrew, it just slides over the surface.
Which way to unscrew
Those who cannot unscrew, begin to look for information – and in what direction does it unscrew? Maybe I’m just twisting in the wrong direction? CAN!
But the filter element is unscrewed – counterclockwise, that is, like many of all nuts, with a normal (not reverse) thread. So if it doesn’t, you need to resort to special methods, about them below.
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Necessary compliance with safety rules
It is imperative to understand that the angle grinder is the tool with the highest possible injury rate. Therefore, it is recommended to remain vigilant when using it even when it is turned off (when replacing circles)
Traditionally, the replacement of wheels with an angle grinder is as follows:
- the equipment is disconnected from the network;
- a stopper is activated on the back of the tool;
- the circle is dismantled with a key.
How To Remove Stuck NUT Of An Angle Grinder . Very Simple
This is a method that absolutely every user of the indicated equipment should use. However, the masters make full use of alternatives. Their main disadvantage is the possibility of damage to the instrument..
What way out of the problem is offered by experts and amateurs
- Install a newspaper gasket under the nut;
- Install a gasket from a plastic bottle under the nut;
- Replace the nut with a nut of a different design..
What is a newspaper strip.
This is a nut-sized paper washer. It is put on the installed disk, and a nut is screwed on top. This piece of paper was a stumbling block, because the safety inspectorate has always broadcast about the harmfulness of such a decision..
The representatives of the safety authorities treat the installation of gaskets made of any other materials in the same way:
- Gaskets from various plastics;
- Rubber gaskets of various thicknesses.
But there is a solution that does not contradict the safety requirements, and allows you to install and remove the disk normally. This is a special nut that consists of two elements – a nut and a pressure washer. The use of such a nut does not require any shims, because the disc does not jam with it..
If there is no special key at hand, then the craftsmen offer to do without the key. This does not mean that you can do without a key at all, but use a “gas key” or other device. To do this, tighten the retainer, tighten the nut with a gas wrench and unscrew it. This way you can replace a jammed disc, but this is a very inconvenient operation for one person..
Some foreign companies producing power tools, such as Bosh, produce an angle grinder with easily removable nuts. They securely fix the disc on the tool shaft, easily and quickly removed to replace the disc.
How to remove a hardened disc from an angle grinder
The use of new nuts solves the problem of removing the disc, but what to do with an already eaten disc? Even if the disc was installed correctly, it is not always possible to remove it. Practice suggests different ways to solve the problem.
You can clamp the retainer and hit through the extension on the holes of the nut in the direction of untwisting. This option is only possible if the retainer is in good condition. But the retainer may not withstand such a solution to the problem and break.
The second method is more logical. Under the clamping nut and the lower support washer there is a gearbox shaft with turned chamfers. They put on the lower support washer. A standard wrench cannot be installed there – it is very narrow. But you can take a regular open-end wrench on “17” and grind it on both sides.
The turned key will enter the gap, fit on the shaft chamfers and fix it. Now any nut will be unscrewed with any key, and the disc or its remains will be removed from the angle grinder.
How to deal with a large caliber?
If you need to unscrew the nut, say, 36 mm, it is not a fact that there is such a large wrench. Especially if the “action” is one-time. But there are no hopeless situations.
A small locksmith vice is quite suitable for our purposes. Their advantage is that they can grip even a fairly thin (4 mm or less) nut..
If there is no vise, but there is a small clamp, it will also do fine. Of course, it is more difficult for her to grab a thin nut because of the “floating” plate. But as a lever, a clamp is much more convenient than a vice.
And also – don’t forget about the lubricant! They say the truth: “If you don’t grease, you won’t go.” And, for a snack, the best way to unscrew the nut is not to be lazy, find and use the appropriate key.
How to fix disc clamp on an angle grinder
To implement this method, you will need some kind of massive wooden material: a piece of thick board, a piece of timber or just a stump.
Then we take an angle grinder with a tightly clamped disc, turn on the tool and press the fixing nut against the surface of the stump with sufficient force so that it continuously rubbed against the wooden surface..
The process must be continued for two to three minutes. This time is quite enough for the clamping nut not only to heat up, but to glow hot. If heating is not stopped in time, there is a risk of damage to the spindle bearing due to overheating..
The degree of sufficiency of the thermal effect on the fixing nut can be checked with a pipette filled with water: drops from it instantly evaporate, barely reaching its surface.
Then we proceed in the standard way. Press the button for quick disk replacement and unscrew the nut with a standard wrench without any effort. In this case, the well-known property of the metal helps us to expand when heated..
Take a chisel, make notches on the edges
The increase in diameter, of course, makes the hub nut unsuitable for further use, but it will be easy to unscrew it..
How to properly place a disc on an angle grinder
Grinding discs have different diameters, different thicknesses and different uses. Some are made for metalworking, others for ceramics, and still others for woodwork.
The angle grinder must be fitted with a disc of a size that does not exceed the size of the protective cover. The size of the disc to be installed is indicated in the instructions and on the marking table of the angle grinder.
The thickness of the disc is selected according to the technological parameters of the processed material. All discs (grinding wheels) have their own classification. Disc shape, material abrasiveness, grain size, hardness, accuracy class and imbalance class are classified. It is the last value that is responsible for the fact that some discs begin to beat during operation..
The grinding wheel has a front and a back. The front side is the one on which the manufacturer’s markings and corporate drawing are applied. Face upwards when installed on an angle grinder.
Installs the disc in this way. So that during operation, sparks with particles of the processed material flew towards the worker. This is related to a safety issue. If the angle grinder breaks free from the hands, it will not fly towards the worker..
Therefore, it is imperative to wear protective clothing or a thick apron when working with an angle grinder. Eyes and open parts of the face must be protected with a mask or at least goggles.
A fairly common problem for those who use an angle grinder, an angle grinder, the cutting disc has broken and the clamping nut is tightly clamped. And the most interesting thing is that sometimes it is practically impossible to unscrew the nut either with a special angle grinder, or with a gas key, or something else. And if it is possible to do this, then it takes enormous efforts and wasted time. I will show you an easy way to save your time and effort to unscrew this nut of an angle grinder without unnecessary complications..
I can not unscrew the bolt
Post by TaIIok »01 May 2015, 22:21
taurine wrote: In general, they gave me such leverage (or whatever).
Mileage 220tyk. and I thought that I could change it for free. I can’t unscrew the bolt in the silencer. I twisted the nut, and the bolt stood up and did not move at all. Who changed the money? He is an eccentric. after replacing the lever, do you need to do the camber??
When I changed these levers. the master said that after replacing them the descent. collapse is unnecessary.
I can’t unscrew the bolt
Message by oleg123rus »02 May 2015, 14:28
I can’t unscrew the bolt
Message from Genych »02 May 2015, 07:44
In the SUSPENSION section there is a large topic on this issue on page 2
Sent after 5 minutes 20 seconds:
called Lever rear longitudinal [replacement]
I can’t unscrew the bolt
Message from Genych »02 May 2015, 08:40
I can’t unscrew the bolt
Message spoook12345 “03 May 2015, 16:42
read for a long time and realized that either cut. or soak in a water bath for a week. or hammer with a punch
I haven’t changed it myself.
I can’t unscrew the bolt
Posted by KiruxaSAR »02 May 2015, 07:51
I can’t unscrew the bolt
Post taurine »01 May 2015, 22:45
so don’t crawl
Sent after 47 seconds:
Thank you, how did you unscrew?
How to tighten round head bolts
Round head bolts are originally regular face bolts. The only difference is the metal from which such fasteners are made, as well as the side slots. It is they who break off during the tightening of the bolt, after which they acquire a rounded shape. At the factory, this is done using special pistols, which allow you to set the tightening factor of the fasteners..
What special bolts look like
Special fasteners on the steering column have been installed for quite some time. It can be found on both domestic and foreign cars. There are three types of shear bolts:
- With a classic hat and an additional “skirt” at the bottom. Such designs work for a break. That is, they are tightened with a certain effort at the manufacturer’s plant. After the fastener takes its place, it will no longer be possible to remove it with a regular wrench. The top cap will simply break off under load, leaving a “skirt” in the form of a tapered protrusion in place. It cannot be picked up or unscrewed..
- With a round head without ratchet type slots. Such a bolt can only be tightened using a special wrench. Back it will not unscrew due to angular rises, which will rip off any key from the head.
- With a regular hexagon head. Until the moment they are screwed in, these bolts look like regular fasteners, but after tightening they take on a new look.
It is with the design and the principle of operation of the last product that we will take a closer look.
Why do you need special bolts
Such bolts are installed for safety reasons. They allow you to:
- Increase passive safety. At the moment of impact, they break, and the steering column becomes movable. The driver does not suffer severe chest and head injuries.
- Protect your vehicle from theft. Bolts without slots are quite problematic to rip off with the help of improvised tools. Also, their location contributes to the complication of the task for the car thief..
- These bolts will not allow you to tighten them all the way. This removes unnecessary stress on the steering column..
But what if you are going to fix this node yourself? How to strip bolts without edges?
Why the bolts on the steering column do not have splines
When parsing the steering rack, the driver may face a certain difficulty. Namely, with the removal of the steering wheel locking mechanism. Usually, special or “shear” bolts are used to secure it. Let’s take a closer look at this element and find out how to work with it..
How to unscrew bolts without slotted heads
First, you have to remove the entire assembly, along with the steering column. Most likely you will see two bolts with ripped off splines in the form of rounded caps. Then you can act in two ways:
- Unscrew the shear bolts with a hammer and chisel. To do this, you need to fix the steering unit in a vice. Then place the chisel at an angle of 45º to the head of the fastener. Tap on the chisel so that it twists the bolt counterclockwise. Thus, you need to move in a circle until the bolt breaks off. Then you can unscrew it using ordinary pliers..
- Take a drill or angle grinder with a thin disc for metal. Make a neat cut in the head of the bolt exactly in the center. A couple of millimeters is enough. Then, slowly try to rip off the fasteners using a large flat screwdriver.
These methods will be enough for most cases. If the bolt is “tightly”, you can try to spray it “WD-40”.
It should be borne in mind that this fastener is not suitable for reuse. To reassemble the steering column, you will need to find new bolts.