Which way the grass trimmer unscrews

How to unscrew a hub nut. the main 5 ways

To solve the problem of how to unscrew the hub nut, you need to determine how to dismantle. This can be done in one of two basic ways:

If the nut does not unscrew, make a choice taking into account the following possible ways:

Name Description What tools are needed When to use
“Barbaric” variant Provides for dismantling, subsequent replacement. Drill with metal drill bits (different diameters), chisel, hammer (small sledgehammer). Used if there is no chance to unscrew in the usual way.
“Hot” method Heating up the metal at the joint. Burner. Bearings and hubs to be replaced.
“Delicate” work Carefully unscrew the stuck part by gradually increasing the lever’s force while simultaneously tapping on the body. Tube socket wrench, reinforced screwdriver, hammer, extension tube, deep penetrating grease. If necessary, carry out the work as gently as possible
Maximum force Powerful wrench and long pipe allow you to significantly increase the force, thereby increasing the chance of breaking the thread. Heavy-duty socket wrench, long tube. Slug nut sockets. Hydraulically or electrically actuated wrench. Nut that is too stuck.
Using chemicals Soaked rag gradually removes the problem. Kerosene and/or mineral spirits, hammer, rags. If there is enough time.

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It is possible to unscrew the stuck element quickly, if you provide a lever. It is installed on a ratchet, using a small crowbar. A piece of pipe of suitable diameter and at least 1 meter long can be used.

In which direction the hub is unscrewed

Many would agree that the unscrewing of a hub nut belongs to the activities that can be punished in court, it is too inconvenient and difficult even for a physically strong person with all the necessary tools. Nevertheless, since it is not always possible to choose the easiest (option One, aka Main!). sending your car to a service station, where not only unscrew it, but also make the subsequent repair. Then it is necessary to solve the problem on your own, using the easiest and most effective way.

The tool for the job

It is found that the silhouette is more often seen rotating clockwise than counterclockwise. According to the online survey of over 1600 participants, about two-thirds of observers say the silhouette turns clockwise.

To find out the number of turns using a ruler, determine the total length of the threaded section and count the number of turns on this distance. Next, simply divide the length by the number of threads counted. The answer is the thread pitch.

Using a hammer and chisel

This method allows a brief application of great force to unscrew. In this case a chisel is used to make a notch. Then a hammer blow is made at an inclined angle. The sudden force can break up the rust and help loosen the part.

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It is important to note that this method can also work if the facets are torn. The short-term nature of the force application ensures that the impact will not be able to destroy the screw and allow the normal unscrewing process to take place.

Light knocking

If a hammer is tapped gently on a jammed nut, it will eventually make small and abrupt movements, which can result in a broken bond with the rust. Then the screw can be unscrewed without any effort. Sometimes tapping can damage the threads. In such a situation the fastener parts will need to be replaced.


The principle is that after heating, the nut will expand and unscrew more easily. Sometimes the screw is also treated at the same time. It can result in the destruction of rust spots.

An accessible source of heat can be used to provide heating. A gas torch, candle flame, soldering iron, hair dryer and any other similar option is used for this. Even e.g. a burning incense can help. When working, it must be remembered that the use of thermal appliances must not be carried out near easily flammable materials.

Another method of action in this situation is to carry out electric heating. A popular tool used to warm up a nut is the use of a transformer. For this purpose, you can use both purchased and homemade parts. It is necessary that the number of turns in the secondary winding provides an output voltage of 1-1.5 volts and the maximum available current.

To perform the heating, both terminals must be connected to the workpiece through copper wires and clamps. After the desired degree is achieved, the part is disconnected from the transformer.


When the worker finds that the nut is jammed and impossible to unscrew, he may assume that the place of contact with the bolt is completely closed and it is not worth planning to act on it to reduce friction.

In fact, the formation of microcracks in metal parts is a common phenomenon. If the fluid is allowed to get wet, it passes through and reaches the spot where the rust is. Much less effort is needed for unscrewing after application.

When choosing a suitable fluid there is no need to look for special products. Even the use of clean water can help. There are special kinds of lubricants used for such cases. You can use the following materials: brake fluid, diesel fuel, gasoline, antifreeze, kerosene.

Antifreeze contains glycols and esters. These agents are known for their particularly high penetrating power. Brake fluid has the same properties. White spirit or turpentine can also be used for wetting.

There are special lubricants, which are called “liquid keys”. You can buy them in car dealers. A popular tool of this kind is WD-40. It has a complex composition that includes volatile petrol, white spirit and mineral oil.

Chemical rust destruction

Usually the nut is stuck because of the formation of rust. If it is removed, it will be possible to unscrew it easily. Take the active ingredient and work it into the piece. acids are usually used for this purpose: phosphoric, citric, acetic, hydrochloric, or sulfuric. Other varieties may also be suitable. The application of this method requires action:

  • A closed roll is made around the nut, designed to prevent the liquid from spreading.
  • For the treatment it is enough to drop only a few drops of acid inside.
  • Adding a small piece of zinc will react reactivate the chemical reaction. This is due to the fact that it will create a galvanic vapor.

In order for the treatment to provide the desired result, it is necessary to leave the acid for at least a day. The reaction rate depends on the chemical strength of the reagents. If a weaker compound is used, the duration of the procedure will increase accordingly.

This video explains how to unscrew a rusted nut:

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The Philips Nose Grass Trimmer is a multifunctional device for trimming eyebrows as well as nose and ear hairs. Some models come with a cutting head that has a double-sided cutting element, and the blades themselves have a protective design that protects your skin from direct contact. This allows you to safely trim hairs to short lengths, giving you a stylish look without the risk of pulling your hair out. When trimming eyebrows, it is always recommended to attach an eyebrow attachment to the head of the grass trimmer. This will trim the hairs to the right length.

Watch this video to learn how to use this grass trimmer. For more detailed troubleshooting instructions, see. in the sections below.

Procedure and torque

Before we talk about the tightening torques of the wheel bolts, you need to understand the sequence of fastening.

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There is a certain principle according to which the fasteners should be tightened. This will allow you to evenly distribute the tightening torque of bolts installed wheels for cars.

Orientate yourself on the number of nuts, i.e. wheel and hub fasteners. Usually there are 4, 5 or 6. There is a different sequence for each situation:

  • If there are 4 fasteners on the wheel, then tightening is performed in this sequence 1-3-4-2.
  • If it is 5 bolts, then the diagram looks like 1-4-2-5-3.
  • For 6 bolts the principle is different 1-4-5-2-3-6.

It is very important not to tighten in a clockwise direction. Choose any of the first bolts you want, and then count down from there. You can draw the marks for convenience so as not to confuse the sequence.

The car manufacturer’s manual has clear instructions regarding what the tightening torque should be for wheel nuts or bolts for a specific vehicle. Sometimes a matching table is also available for model cars.

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Having at disposal a torque wrench, you set the required value on it, which will help you with the tightening table, and then use this tool to perform the final stage of securing wheel bolts to the hub. It is not difficult to learn how to work with a torque wrench. The easiest models in this respect are the ones with a stopper. They simply stop generating force when they reach the set value. It is more difficult to work with the pointer models, where you have to watch the tightening and try not to go beyond the limits.

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Increasingly, aluminum nuts are being installed on wheels. They look nice and don’t rust, but they require more careful tightening because the threads are less strong and can be torn easily.

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Before you get started compare the torque requirements for your vehicle and determine how much torque the nuts you use are designed for.

A special table designed for tightening the wheel bolts with the appropriate tool, i.e. a torque wrench, helps in this perfectly.

Causes of jamming

As a rule, this problem is encountered on angle grinders with a work surface diameter in the range of 150-180 mm. When heavy torque is applied, the disc jams. It is impossible to remove the bit with an ordinary wrench, even with hard physical effort.

A second common cause is the use of a disc for an angle grinder that does not fit the tool’s original parameters. This causes the entire mechanism to malfunction and become jammed. In rare cases, it is impossible to unscrew the nut if there is rust on the threads of the nut. This is most common with prolonged use or storage without changing the bit.

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Important! angle grinder discs are available in various sizes with a diameter between 115 mm and 230 mm. The landing shaft itself is available in diameter of 22,2 mm, when using older models, an adapter is required.

Trimmer heads: types and principle of operation

The domestic market offers the owners of trimmers spools of several types: manual, semi-automatic, automatic and universal. They differ from each other as a way of filing the line, and the principle of its charging. You can also wind the line in different ways. According to this principle, reels are classified into quick-charge and collapsible.

Before you buy a grass trimmer and / or buy spare spools for it, it is necessary to get acquainted with what kind of consumables are suitable for this or that model. This is important, since spools from different manufacturers may differ not only in the methods of filing and tucking the cord, but also in the axis of attachment, the type of thread, as well as the diameter of the line used. For example:

Tip! Experts recommend using string heads equipped with ball bearings, as they have an extended service life, while reducing the wear and tear of the incoming components. At the same time it is best to choose a reel for replacement of that manufacturer, which is specified in the instruction manual of the grass trimmer, which in turn will allow you to properly install the head on its drive.

Manually operated reels

The manual mowing head is a reel, in which the cutting cord is pulled by the owner of the grass trimmer himself when worn. To do this, you need to turn off the tool, remove the head and use your hands to pull the line to the required length. However, despite some inconvenience, this type of head is considered the most reliable.

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