Which Way To Unscrew The Bolt On The Lawn Mower • CIMFLOK.COM

Which way to tighten the bolt

Work related to replacing the engine timing belt, crankshaft and camshaft toothed pulleys, engine front oil seal, as well as the generator drive itself, requires dismantling the crankshaft pulley. This element is available both on domestic cars and on foreign cars. Actually, most motorists have a question, how to unscrew the crankshaft pulley? And to be even more precise, the fixing bolt on the crankshaft flange, and in which direction to turn the key. Let’s consider.

For owners of cars with automatic transmission

How to unscrew the crankshaft pulley on the machine? If an automatic gearbox is installed, then the car with rear wheel drive is set to the “Parking” gear. The handbrake is turned on and then the element is unscrewed in the same way as on a mechanical box. It is more difficult if the car is front-wheel drive. In this case, removing the element as on mechanics (with the gear engaged and the brake pressed) will not work.

Which Way To Unscrew The Bolt On The Lawn Mower

There is a high risk of damage to the transmission. In this case, you need to stop the crankshaft so that it cannot turn in the second way. Insert the assembly between the teeth of the engine flywheel ring gear through the hole in the gearbox bell. It is rested so that it cannot jump off and NOT spoil the teeth on the flywheel. In some cases, to get to the flywheel, you need to unscrew the engine starter. This will require a viewing hole, lift or overpass.

Why difficulties may arise?

Removing a pulley is in itself a difficulty, even for a specialist, which already speaks for beginners. Difficulty may arise when removing the bolt or nut that connects the pulley to the crankshaft. The fact is that the direction of the thread when unscrewing it coincides with the direction of the torque while the engine is running. Thus, while the engine is running, the bolt is constantly tightened, which as a result, when removing the bolt, is a serious problem. Difficulty can also arise in the absence of the right tool.

Crankshaft pulley malfunctions

The main faults include:

Wear of the element itself;
The presence of cracks on the pulley housing;
Backlash;
Alternator drive belt slippage.

Also, in addition to wear on the running surface of the pulley, slippage can also occur due to wear on the drive belt. It changes every 60 thousand kilometers.

Tools for work

In the case of a manual gearbox, the crankshaft pulley mounting bolt can be unscrewed with a spanner or head. Better to take a regular crank. The ratchet in most cases does NOT withstand such a load (even if it is the strongest) and as a result, it crumbles to pieces. It is not recommended to use an open-end or gas wrench when dismantling the crankshaft pulley.

The first tool can break, and the second will only spoil the edges of the bolt, and the next time it will be even more difficult to unscrew it. In case of severe damage to the edges, it will have to be drilled out and removed in parts, which will be unpleasant for the car owner. This will increase the time to replace the element.

Features of work

At first glance, there is nothing difficult to simply remove the bolt that secures the pulley to the engine crankshaft flanges. However, this is not quite true. The crankshaft pulley bolt is very rarely unscrewed and always sticks. Therefore there is a risk of disrupting it. First, we need to get to this pulley. To do this, unscrew the bolt fixing the generator to the tension bar. The latter is attached to the engine block.

The generator slides towards the engine and the drive belt is removed from the pulleys. It can be rivulets or serrated. Now, having reached the desired element, proceed to further actions.

How to unscrew the VAZ crankshaft pulley

On domestic cars of the VAZ “Classic” family, as well as on the second cars, the element is extracted in the same way. The only difference will be in which gearbox is installed on the car in which such work is performed. Which way to unscrew the crankshaft pulley bolt? Unambiguously counterclockwise.

To simplify the task, you can call an assistant, who must turn on the direct gear (3 or 4) and keep the brake pedal pressed. At the same time, you will unscrew the pulley bolt. If the car is rear-wheel drive, then you can do without an assistant. Just put the car on the handbrake and unscrew the bolt in the same way. Work can be done from the side of the hood or below in the inspection ditch. The main thing is to make it convenient to work. You can also jack up the car and remove the front right wheel.

This will provide good direct access to the crankshaft pulley, which is unscrewed with a head with an extension. The bolt of the mechanism rarely “yields” immediately and constantly sticks with the thread to the inner hole of the crankshaft flange. Therefore, it is always very difficult to disrupt it. If it is not possible to Unscrew the pulley mounting bolt, then a long knob or pipe can come to the rescue. The element is put on the key. Taking hold of the very edge of the collar, having collected, as they say, all the forces in a fist, you should try to remove it again. Actually, the longer the lever, the easier it is to work.

How to unscrew the bolt?

Generally, the pulley is bolted to the crankshaft only on front wheel drive vehicles. To unscrew the bolt holding the pulley to the crankshaft will have to work hard, because getting to the bolt is not easy. Before starting, you need to prepare the necessary tools: a jack, a head for the size of the bolt and a lever with an extension, a set of tools for a motorist and a “tragus” (you can use a stump as a tragus). The withdrawal stage looks like this:
On the right side of the car in the area of the front wheel Install the jack. Raises the car with a jack and remove the wheel;
We put a tragus or stump under the car, near the jack (which is at hand). This will ensure the reliability and safety of bolt removal;
In the process of work, it will already be clear that it is NOT possible to get to the bolt. We open the hood of the car and remove all the parts that prevent full access. Usually, the air filter, protective brushes of the car engine and the generator belt are removed;
To unscrew the bolt, you need to fix the crankshaft. To do this, lock the flywheel teeth. On the clutch block, open the cover and insert a pry bar or screwdriver into the hole formed. Carrying out actions to hold the flywheel lock while unscrewing the bolt Not very convenient for a friend. You can ask someone for help;
We take a head, matched to the size of the bolt, with an extension cord and an additional lever, push it under the wheel arch and put it on the bolt;
Turn the lever against the clock hand.

In the general mass of cases, the bolt lends itself immediately, but if it is still in place, then you can use a slightly longer lever, then it will definitely work out.

Why difficulties may arise?

Removing the pulley is in itself a difficulty, even for a specialist, which already speaks of beginners. Difficulty may arise when removing the bolt or nut that connects the pulley to the crankshaft. The fact is that the direction of the thread when unscrewing it coincides with the direction of the torque while the engine is running. Thus, while the engine is running, the bolt is constantly tightened, which as a result, when removing the bolt, is a serious problem. Difficulty can also arise in the absence of the right tool.

D15B loosening the knee shaft pulley bolt. Which way?

A guy with a belt from a generator on a pulley. so you can bend the four-thread, you know.

The moment when unscrewing is about 60-70 kgm, well, not less.
A meter wrench from a DN25 pipe is slightly bent.

So, let’s say you need to figure out how to remove the crankshaft pulley. This is not an easy task, especially when it happens for the first time. Let’s figure out how to Unscrew the crankshaft pulley, and at the same time DO NOT stop loving your car?

Folk tricks

Consider a few popular car tricks that have helped more than one driver.

Each threaded connection, by the way, and not only on the part of the car, can be unscrewed, having previously lubricated it with special oils, for example: HP, sunflower oil, vinegar, brake fluid.
In rare cases, light tapping on the edges of the bolt and nut with a hammer or wrench helps.
Removing a bolt or nut does NOT mean removing a pulley. How to unscrew the crankshaft pulley without a special key? The pulley sits very firmly on the shaft, it can be removed with a pry bar or a screwdriver, gently pry it in several places.

The second method of dismantling

There is another tricky way how to Unscrew the crankshaft pulley. It is done independently without the presence of an assistant. Having previously removed the generator drive belt, a head or a spanner wrench is put on the mechanism bolt, the handle of which rests on some surface.

Ghoul it in the body or other parts of the engine compartment is not worth it. When unscrewing the key, it can damage units with rubber pipes, scratch and even damage the body. In the future, it will become clear why. It is best to rest the handle of the key on the ground or floor, put a wooden board under it. The main thing is to have a solid and even surface. If the key does not reach the stop, then by moving the head or rotating the crankshaft, rest it on a hard surface.

Now, turn on the ignition, you need to turn the engine with a starter. Its strength is more than enough to rip off the pulley fixing bolt. The main thing is not to overdo it and correctly rest the key so that it stands firmly in place and does NOT stagger. Even due to a slight offset, it will come off the bolt head and damage the engine compartment. In no case should you start the engine, and if you still manage to do it, then immediately turn it off.

To prevent the engine from starting, you can remove the fuel supply hose from the fuel pump to the carburetor, if it is a carburetor engine, or the hose entering the fuel rail, if the engine is injector.

How to unscrew the VAZ crankshaft pulley

Crankshaft pulley malfunctions

The main faults include:

Wear of the element itself;
The presence of cracks on the pulley housing;
Backlash;
Alternator drive belt slippage.

Also, in addition to wear on the running surface of the pulley, slippage can also occur due to wear on the drive belt. It changes every 60 thousand kilometers.

Now you know how to unscrew the crankshaft pulley yourself. The car owner needs to approach this job with great responsibility. Made the slightest mistake, additional repairs can be provided, which will be accompanied by large monetary costs. If the head of the crankshaft pulley fixing bolt breaks off, the thread will deteriorate or parts of the engine compartment will be damaged. Therefore, correctly following the above recommendations, the work will be fast and of high quality without the occurrence of adverse situations. On this question, how to unscrew the crankshaft pulley bolt with your own hands, can be considered closed.

Features of work

The generator slides towards the engine and the drive belt is removed from the pulleys. It can be rivulets or serrated. Now, having reached the desired element, proceed to further actions.

Unscrew the pulley nut

The nut that holds the pulley at the end of the crankshaft indicates that we are working with a classic version of the engine, namely a VAZ-type machine. So, before starting work, you need to prepare the necessary tool, namely a socket or box wrench for “36” or “38”, you also need to prepare a piece of pipe about 30 cm (later you will find out why). The work is best done on the inspection pit. If this is not possible, then it is better to use a jack and be sure to stump (it is better to play it safe).

Transmission lever Set to the fourth gear position and turn on the parking brake (handbrake). Trying to Unscrew the nut using a wrench with a long lever while under the car. If the attempt fails, you need to use another option.

The gear lever is set in neutral position, remove the candlesticks. The key is installed so that it rests (in the case when the length of the key is not enough, a pipe is used) on the floor or on the rear side member in the direction of movement of the crankshaft. When the requirements are met, it is necessary to apply short impulses by turning the ignition key. Sometimes the nut sits so tightly that you can’t pull it off the first time. Mostly it is released on the third or fourth attempt. After the nut is torn off, it can be twisted with a wrench.

How to unscrew a hub nut. the delicate way

Tubular socket wrench. “knob”. The tool must be made of high strength steel.
Powerful screwdriver.
Iron pipe.
WD-40.
Metal brush.

We clean the thread from dirt using a brush with metal bristles. Now soak the penetrating grease on the hub nut. For example, WD-40.
We saturate the penetrating hub with a mixture. You can rest for 10-15 minutes, and then you should put the head of the key on the nut and hit it with a hammer several times, gradually increasing the impact force. Just do not overdo it: the meaning of this action is to make a slight deformation of the nut, due to this it will be easier to remove it. And immediately after the blows, you should try to Unscrew the hub nut on a VAZ or a car of another brand.

Burner use

The law of physics is guaranteed to work and the body (read: hub nut) will expand. And this will greatly facilitate the removal of the stubborn part. There is one “but”: Not only this one detail is warmed up, but everything else in the area of the burner. For example, a bearing. And it is better not to allow this. As a more gentle option, we can suggest using a soldering iron and. Patience. You will need it.

What’s the bottom line.

As you can see, unscrewing the hub nut is not an easy task, but it can be solved. Please note that it is worth trying to preserve the hub nut first by using penetrating fluids such as a wedge. The physical effort to twist the hub should be moderate. And, of course, it is worth refraining from strong blows and incandescence with a burner, as ways that can damage Not only the nut, but also the bearing.

Lever jumping

A chisel will help to tear off the hub nut

The “method” is fraught with the danger of unexpected breakage of the nut edges, key breakage, and so on. Just don’t do it like that.

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.

Which way the hub nut is unscrewed

Yes, it may very well be that you are one of the lucky ones who will NOT need extra effort, since the problem with unscrewing the hub nut may simply be in the wrong direction.

So, we take the crank and, when your car is far from new, try, if the nut does NOT lock, on the left wheel. unscrew the nut counterclockwise, and on the right. clockwise. In modern brands, usually both left and right you need to unscrew the hub counterclockwise.

Before you start unscrewing the hub nut, do not forget that it breaks off when the car is on the wheels, and there are stops under them. On the side from which the nut will be unscrewed, the stop is securely installed.

Although if the nut is located deeply, and the brake disc is ventilated, then you can try to unscrew (fixing with a powerful screwdriver) and so on, only making sure that the machine is reliably insured. Remember also about personal safety: protecting your eyes, and do not be overzealous, because in courage, you can accidentally injure yourself or damage the car body.

Unfortunately, in most cases, it is not enough to use a knob with a large lever; you have to use additional tools, special mixtures. Let’s consider other options.

Strong hammer blows

You hit the hub. you hit the bearing! If you are replacing, then go ahead! If you value the bearing, avoid this method.

Warming up the hub nut with a burner. Not recommended!

Theme options

Unscrewing the hub nut on the VAZ “burn, beat and twist!

Now we will consider the methods that may be the only effective in your case, but from this they are no less radical, even barbaric.

Which way the hub nut is unscrewed

Yes, it is very possible that you are one of the lucky ones who will NOT need extra effort, as the problem with unscrewing the hub nut may simply be in the wrong direction.

Unfortunately, in most cases, it is not enough to use a knob with a large lever; you have to use additional tools, special mixtures. Let’s consider other options.

Remove the nut from the car: power method

Lever from the pipe (length not less than one and a half meters).
Powerful socket wrench (450 mm.).
Corresponding head.

We put the head of the key on the nut of the hub, insert the knob and push the pipe onto the handle. Gradually increasing the applied forces, we turn the part away.

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Khimich

Now we will consider ways for those who do NOT rely on the help of physics, but want to solve the problem with the help of chemistry. Your laboratory should have: kerosene, white spirit, acidified sulfuric acid, zinc, plasticine, hammer, water, sandpaper, wrench, chisel.

Attributes of the chemical method for loosening the nut

With kerosene (Experienced people recommend making a mixture of White spirit and kerosene) we wet the nut and bolt, applying a tampon to them, no matter what, cotton or gauze. After some time. from an hour to a day, and with repeated attempts, you may find that the hub nut can be easily unscrewed. But even here you can’t do without strength: at least, you will probably have to work with sandpaper to clean the parts from rust. If after this the matter does not go well, you should help with a hammer: knock it on the edges of the hub nut.

If in this case you did not succeed, make a small container of plasticine, fix it on top of the hub nut, pour water with sulfuric acid into it, put zinc in the container. A chemical reaction starts that does a very good job with rust. Usually a day is enough for even running corrosion to release the part. Finish the job with a wrench. But this method is valid only in the case when the reason that the nut is firmly stuck and / or rusted, and if it is simply overtightened, neglecting the required tightening torque (in order “for sure”), then you just need to chick it.

Unscrewing the hub nut on the VAZ “burn, beat and twist!

Now we will consider the methods that may be the only effective in your case, but from this they are no less radical, even barbaric.

How to unscrew a hub nut. the delicate way

Tubular socket wrench. “knob”. The tool must be made of high strength steel.
Powerful screwdriver.
Iron pipe.
WD-40.
Metal brush.

We clean the thread from dirt using a brush with metal bristles. Now soak the penetrating grease on the hub nut. For example, WD-40.
We saturate the penetrating hub with a mixture. You can rest for 10-15 minutes, and then you should put the head of the key on the nut and hit it with a hammer several times, gradually increasing the impact force. Just do not overdo it: the meaning of this action is to make a slight deformation of the nut, due to this it will be easier to remove it. And immediately after the blows, you should try to Unscrew the hub nut on a VAZ or a car of another brand.

Easiest way to Unscrew / rip off the hub nut

The following can be considered the easiest way, but it involves a complete replacement of the nut. Don’t worry, any method does not guarantee that this part will be preserved. To easily unscrew or rip off the hub nut from its place (an option for all brands. from VAZ to foreign cars, where there is a groove on the shaft), you need to take:

Unscrewing the VAZ hub nut using a drill

New nut.
Drill or screwdriver.
Drill up to 3 mm.
Chisel.
A hammer.

Drill nut is needed along the groove to release.
With the help of a chisel and a hammer, we simply break the nut and remove it, followed by replacement.
If it is NOT possible to throw away the nut, then you have to sweat. and in the literal sense of the word too.