Chevrolet Niva wheel nut tightening torque

For the Niva model, the wheel is attached to the hub using wheel nuts. The number of fasteners depends on the year of manufacture of the model and is presented in the table below.

General fastener dimensions:

• number of fasteners: 5 (pcs);
• fastener size: M12x1.25 (mm);
• diameter between fasteners (PCD): 139.7 (mm).

Important: the data presented above are the limits for all vehicle modifications. Specific numbers depend on the year of manufacture.

Rules for selecting wheel fasteners:

It should be taken into account that different wheel fasteners are often used for cast and stamped wheels.

First of all, this concerns the length of the bolts, because... The thickness of different types of discs can vary significantly.

When selecting any fastener, special attention should be paid to the thread pitch. This parameter is always indicated in the marking after the x sign.

For example: the designation M12x1.5 corresponds to a thread with a nominal diameter of 12 (mm) and a thread pitch of 1.5 (mm).

Thread M14 x 1.5 means:

M14 – thread diameter 14 (mm); 1.5 — thread pitch (distance between adjacent threads).

To fasten wheels or disks, 2 main types of fasteners are used:

- wheel bolts; -wheel nuts.

Thread M14 x 1.5 means:

M14 – thread diameter 14 (mm); 1.5 — thread pitch (distance between adjacent threads).

The diameter of the circle on which the mounting holes for Chevrolet Niva are located.

1. The distance between the vertical plane of symmetry of the wheel and the plane of application of the disk to the hub.

Wheel nut Niva Chevrolet size

For the Niva model, the wheel is attached to the hub using wheel nuts. The number of fasteners depends on the year of manufacture of the model and is presented in the table below.

General fastener dimensions:

• number of fasteners: 5 (pcs);
• fastener size: M12x1.25 (mm);
• diameter between fasteners (PCD): 139.7 (mm).

Important: the data presented above are the limits for all vehicle modifications. Specific numbers depend on the year of manufacture.

Rules for selecting wheel fasteners:

It should be taken into account that different wheel fasteners are often used for cast and stamped wheels.

First of all, this concerns the length of the bolts, because... The thickness of different types of discs can vary significantly.

When selecting any fastener, special attention should be paid to the thread pitch. This parameter is always indicated in the marking after the x sign.

For example: the designation M12x1.5 corresponds to a thread with a nominal diameter of 12 (mm) and a thread pitch of 1.5 (mm).

Thread M14 x 1.5 means:

To fasten wheels or disks, 2 main types of fasteners are used:

- wheel bolts; -wheel nuts.

Thread M14 x 1.5 means:

The diameter of the circle on which the mounting holes for Chevrolet Niva are located.

1. The distance between the vertical plane of symmetry of the wheel and the plane of application of the disk to the hub.

Caution: the above data are the official figures of the manufacturer, however, please note that the information is for reference only and does not guarantee absolute accuracy.

A motorist may often be faced with a situation where he needs to install new Niva nuts, the thread size of which is designated as M12x1.25. It would seem that the task is simplest. But wheel nuts are to a great extent responsible for the safety of the driver and passengers, so you can’t just throw them away and put in anything.

How hard should you tighten the wheel nuts?

The tightening force for the bolts is different for each car and is determined by the manufacturer, indicating it in the operating instructions for the model.

But how do you understand that when twisting, exactly the force that is needed is applied? And how not to overdo it and not break the thread? For this purpose, there is a special wrench with a built-in dynamometer (hence the name dynamometer). It will provide control of the tightening torque of wheel nuts, for which pinching is as undesirable as weak fastening.

It can lead not only to thread breakage or deformation of a bolt or stud, but also to the appearance of a crack on the disk. In addition, overtightened fasteners tend to stick to the hub, after which it is impossible to unscrew it - you just need to cut it off. You can tighten the threads not only with a wrench, but also with a bolt gun, the lever of which is of sufficient length.

Therefore, after screwing the fasteners with a conventional tool, it is recommended to final tighten the bolts with a torque wrench. With its help, the connection can be either tightened to the specified level or weakened if excessive force was initially applied.

Notes by malykh

A short continuation about wheel nuts (see about the difference between nuts for casting and stamping).

A budget option for M12x1.25 wheel nuts are nuts from Niva. Here are two options:

On the left in the photo is a nut from a classic Niva. This is a stamping nut only, not recommended for use with alloy wheels. But on the right is a nut from a Chevrolet Niva. This nut can be used with alloy wheels.

These nuts will also fit the Jimny. Comparison with the original Dzhimnikov nut:

If you suddenly need nuts urgently, and there is an option only for the Sh. Niva, then you can take that too.

3 comments:

I saw the shiny one in the store, the one on the left in the last photo. At least it looks similar. The price is 45 rubles, if I'm not mistaken. Turnkey “for 17” and “for 19”. Actually, this is what I use (both casting and stamping). I have never used the one on the left in the first photo, although it could have happened.

Original Japanese nuts are good, but expensive. And cheap Chinese ones look beautiful, but they can be made from wild “raw meat”. I myself saw how chips were easily removed from such nuts when tightened with stamping (Dotz). :-/ “Shnivovskie” are not ideal, but, in principle, they will do as a last resort at their low price (I recently bought them for 35 rubles apiece). But, of course, you need to take into account the thread (M12x1.25 is not used everywhere).

“The shavings were removed” is, of course, complete chaos. These will go straight to the ferrous metal (if accepted ;-)). But the thread of the studs will not be damaged by the “silumin”. In normal operation I try to adhere to a couple of rules: don’t be lazy to clean the dirt - lubricate the external threads with graphite and do not exceed the tightening torque. Otherwise, ordinary “Russian” nuts (such as “Shniv” ones) will eventually begin to crack when twisted with a wrench. By the way, I like that the “Japanese” type has closed ends. Less negativity on the thread, less fuss.

Replacing front wheel bearings

For reference: Applicable bearings

We carry out the work on an inspection ditch or a lift. We hang up the front of the car and remove the wheel. Disconnect the caliper from the pad guide (see here)

Unscrew the adjusting nut of the hub bearings (see here)

Similarly, loosen the rear fastening nut.

Similarly, unscrew the front fastening nut.

We disconnect the brake hoses from the steering knuckle (see here) We disconnect the fastening of the upper and lower ball joints from the levers (see here and here)

If it is difficult to separate the parts, clamp the steering knuckle in a vice...

To separate the hub and brake disc, screw the nut onto the stud...

We dismantle the other studs in the same way.

To dismantle the seals and hub bearings, clamp the steering knuckle in a vice.

Similarly, we remove the oil seal, ring and inner ring of the other (inner) bearing with a cage and rollers.

Similarly, we knock out the outer ring of the inner bearing. We perform assembly in reverse order. Before installing the bearings, clean the inner cavity of the steering knuckle from old grease. We press in a suitable piece of pipe...

We put 40 g of Litol-24 lubricant into the cavity of the steering knuckle and into the bearing separators.

After installing the mud ring,...

By connecting the brake disc to the hub...

To prevent the bolts securing the lever to the steering knuckle from falling out when installing it on the car...

By inserting the shank of the outer drive joint into the hub splines,...

Upon completion of assembly, adjust the clearance in the bearings (see here)

To prevent your Chevrolet Niva from being “taken off” the next night after installing new tires, it is recommended to install 1 secret nut on each wheel. No matter how new technologies develop, more reliable means of stingray theft have not yet been invented. Hence the first and main advantage of the secret: such fasteners will help protect much more expensive property from thieves than it is worth.

Modern secrets are no match for the first ones that appeared in distant Soviet times. They are structurally more perfect and differ in aesthetics, which is important. The part is an elongated nut with an adapter for an individual key. If you choose closed-type decorative fasteners of the same length for it, then the wheel as a whole will look quite aesthetically pleasing.

The secret mount is very useful for the spare wheel of the Chevrolet Niva, which is screwed to the bracket on the rear door with ordinary nuts, and therefore most vulnerable to thieves. To unscrew secrets, the following types of keys are made:

To prevent the nut from being grabbed by a gas wrench or other similar tools, the lock on top is equipped with a rotating bushing (shell), and the place for the wrench is located in a recess. Cheap products and fakes may not have a shell, so you cannot buy such nuts. The disadvantages of secrets are:

• The tightening torque is weak, so the remaining nuts must be held securely;
• any tricky fastener can be unscrewed if the thief has the time and opportunity to do so;
• the need to always have the key with you and not forget it under any circumstances.

The last drawback is a real scourge of forgetful drivers. If the ramp of exits 2 is punctured: go get the key or call a tow truck, otherwise the wheel cannot be removed.

Block plane and gasket penetration

Loosen the fastening clamp and disconnect the hose of the lower thermostat pipe. Loosen the fastening clamp and disconnect the hose of the thermostat side pipe. Loosen the fastening clamp and disconnect the fluid supply hose to the heater radiator from the cylinder head pipe.

Unscrew the nuts of the fuel pipes and disconnect the fuel supply and drain lines. Remove the upper bolt securing the rear intake pipe strut, loosen the lower bolt of the strut and move it to the side.

Torsion bolts (plastically deformable)

Remove the two nuts securing the starter heat shield. Move the shield to the side. Remove the chain from the camshaft sprocket. Carefully place it on the tensioner shoe.

Possible improvements

The Chevrolet Niva hub does not require any maintenance work during operation. In this case, the car owner is obliged to constantly monitor the condition of the wheel bearings. By replacing them, improvements are possible. First of all, this is the installation of non-adjustable, reinforced bearings. Instead of two single-row ones, one double-row bearing is installed, and the landing part of the steering knuckle is bored. The landing part of the hub is also bored. Today you can already buy a non-adjustable hub along with a steering knuckle. You just need to pay attention to the number of splines for the drive. Such bearings are more reliable. In addition, there is no need for constant adjustment.

What kind of disks can be installed?

The manufacturer recommends installing R16 standard wheels. It is allowed to mount smaller wheels R15 on the car. It’s easier to choose tires for this size; there are plenty to choose from compared to 16-inch wheels.

The depth of the body arch of the Chevrolet Niva allows the driver to install 17-inch cast wheels on the car. Correct installation of wider wheels will allow you to:

• improve directional stability and vehicle control;
• reduce braking distance in case of unexpected braking;
• increase the vehicle's maneuverability in off-road conditions.

It is worth noting the negative aspects of such a replacement:

• the likelihood of damage to the integrity of the disc increases when the tire is damaged, for example, from a side impact;
• the smoothness of the ride decreases, the movement on it becomes harsher, and vibration increases.

Niva wheel nut thread

VAZ-2121, 21213-15, 2129-31 are a famous family of SUVs that have gained enormous popularity from the first day the production model appeared in 1977. The VAZ-2121 Niva is a basic model, which is based on a monocoque three-door station wagon and a transmission with permanent all-wheel drive.

During the production of this car, many different modifications were designed and manufactured regarding the body structure, appearance, engine used and many other elements of the car. For example, the VAZ-21213 “Taiga” is a redesigned restyled version of the base car, the VAZ-21214 is a model with a domestic 1.7-liter engine, and the VAZ-21215 was equipped with the French Peugeot XUD 9SD engine. A special place is occupied by specimens converted for commercial use. In particular, the VAZ-2129 “Utility” is a model extended by 500 mm with two front seats and a cargo body, and the VAZ-2131 is an extended five-door station wagon.

Due to the huge number of modifications, it is difficult to talk about a specific group of spare parts that are in greatest demand. However, it should be noted that for many years there has been a steady interest in the details of the classic basic version of the Niva.

Nuts M12 * 1.25 wheel Niva Heptagonal (narrow 20 pcs. + special wrench)

For alloy wheels (chrome plated)

The nuts do not have a standard number of edges (7), which does not allow the use of regular wheel wrenches.

The nuts are tightened and unscrewed only with the help of an adapter head for seven edges.

Includes 20 nuts and 1 adapter head.

To secure a car wheel to the hub, a special type of fastening element is used - nuts. The usual shape that car wheel nuts have is a hexagon. Currently, their range includes nuts, which may differ in many respects. This is not only the height of the nut, diameter and thread pitch, but also appearance, strength class and coating resistance. Therefore, when planning to purchase nuts for discs, you should not neglect the advice of professionals who will help you make the right choice.

Another parameter by which nuts can be classified is the material of manufacture. Standard products are usually made of steel. They are characterized by optimal strength and reliability, as well as an affordable price. To increase the protective properties of the metal, as well as to give products an attractive appearance, chrome, galvanized or colored coating can be applied to the surface of the nut.

If wheel nuts must meet certain specific requirements, they can be made from aluminum. As a rule, such fasteners are used on racing cars. Their main difference is their low weight, as well as the increased softness of the metal. Such nuts have to be tightened quite often.

When carrying out tuning, titanium wheel nuts can be installed. They are characterized by exceptional strength combined with low weight. However, it must be borne in mind that their cost is significantly higher than that of other fasteners for similar purposes.

Stamped and cast wheels require different types of nuts. This is due to the fact that it often happens that spherical wheel nuts are used on cast wheels, and conical wheel nuts are used on stamped wheels. Also, most often, open-type wheel nuts are used on stamped wheels, and closed-type wheel nuts are used on cast wheels. This requirement is fully met by high-quality wheel nuts from. One more point: since the metal of cast wheels is relatively soft, at first after installing them it is advisable to check the degree of tightening of the nuts and bolts.

In our company you can purchase wheel nuts for various types of modern wheels. Having specialized in the production and supply of fasteners for automobile wheels for a long time, we have established relationships with a number of reliable foreign factories. This allows us not only to guarantee high quality products and the availability of a wide range, but also to set affordable prices for all types of products we offer. From us you can purchase nuts for Ford alloy wheels and for almost all passenger car brands. Our specialists will help you choose a fastener, and you can be sure that you will purchase exactly the nuts that suit your car and rims. You will thereby ensure not only driving comfort and safety, but also an attractive exterior of your car.

Wheel nuts wholesale and retail: large selection and excellent quality

Have you decided to order wheel nuts wholesale and are looking for a reliable supplier? Need quality products? It will help you. They choose us for several reasons:

• Wide choose. The catalog includes more than a thousand product names. You will be able to find what you need.

• Delivery. In Moscow, products are sent to wholesale buyers free of charge; please check with the manager for delivery conditions to other cities. We are sure there will be a solution. For retail customers, there is express delivery, delivery in the evenings and on weekends.

• Reliable products. We offer products of our own production and are responsible for the quality of our products. All products are certified.

If you need wheel nuts wholesale and retail, you can contact our specialists by phone or.

Pros and cons of secret fasteners

To prevent your Chevrolet Niva from being “taken off” the next night after installing new tires, it is recommended to install 1 secret nut on each wheel. No matter how new technologies develop, more reliable means of stingray theft have not yet been invented. Hence the first and main advantage of the secret: such fasteners will help protect much more expensive property from thieves than it is worth.

Modern secrets are no match for the first ones that appeared in distant Soviet times. They are structurally more perfect and differ in aesthetics, which is important. The part is an elongated nut with an adapter for an individual key. If you choose closed-type decorative fasteners of the same length for it, then the wheel as a whole will look quite aesthetically pleasing.

The secret mount is very useful for the spare wheel of the Chevrolet Niva, which is screwed to the bracket on the rear door with ordinary nuts, and therefore most vulnerable to thieves. To unscrew secrets, the following types of keys are made:

To prevent the nut from being grabbed by a gas wrench or other similar tools, the lock on top is equipped with a rotating bushing (shell), and the place for the wrench is located in a recess. Cheap products and fakes may not have a shell, so you cannot buy such nuts. The disadvantages of secrets are:

• The tightening torque is weak, so the remaining nuts must be held securely;
• any tricky fastener can be unscrewed if the thief has the time and opportunity to do so;
• the need to always have the key with you and not forget it under any circumstances.

The last drawback is a real scourge of forgetful drivers. If the ramp of exits 2 is punctured: go get the key or call a tow truck, otherwise the wheel cannot be removed.

Adjusting the clearance in Niva hubs

After installing a new bearing, a new wheel nut should also be used. The wheel must be on the car.

Adjustment of the front hubs on the Niva and Chevy Niva is carried out as follows:

1. Screw the hub nut all the way and loosen slightly.
2. Checking the play. If it persists, tighten the nut.
3. We check the play again.
4. The procedure is carried out until the backlash disappears.
5. Use a sledgehammer to break a tire or drive a Niva a couple of meters.
6. A small backlash appears. We also tighten the nut and leave it barely noticeable.
7. Now the nut can be tightened.

Attention! You should drive the car for one day, after which, adjust the bearing again.

Why change the mount?

There are several reasons why Niva car owners change their wheel nuts to new ones:

Old nuts that are worn or mechanically damaged do need to be replaced, especially when they have poor threads or missing edges. It is difficult to tighten such a part with a torque of 10-11 kgf/m to securely fasten the wheel. It’s better to install a new set; it’s pointless to change 1-2 fasteners. The main thing is that the threaded part of the stud remains normal.

Alloy wheels, although thicker than stamped steel ones, can theoretically be fastened with factory nuts. Another thing is that such details will ruin the entire appearance of the new wheels, so in such a situation it is better to install elements that are in harmony with the wheel. There is another point: in some models of alloy wheels, samples are made in the form of a hemisphere, rather than a cone. Then the standard fasteners will definitely not fit; you need to purchase nuts with a spherical end that fit into the mating part of the rim.

In addition to improving the appearance of the car, there is another reason that forces you to change 1 out of 5 nuts to a special one that can only be turned with an exclusive key. The reason lies in the high cost of car tires and storing the car itself in the open air in the yard, as often happens in cities. To prevent tires from being stolen at night, one clever security nut is installed on the car.

Adjustable hydraulic supports (hydraulic compensators).

Old style hydraulic compensators.

Everyone knows what a hydraulic compensator (hereinafter referred to as hydraulic compensator) is and what function it performs. Worse than these g.k. I haven't seen anything, and their price isn't bad. The weakest point of these tensioners is that they tend to constantly unscrew (tightening torque is from 1.7 to 2.5 kg), tighten it harder, it simply will not work. Many people try to install them on various thread clamps, but I think this is not a solution. AvtoVAZ has already stopped producing cars with such cylinder head, but there are a lot of cars with cylinder head, old model, but not everyone has the opportunity to change the cylinder head to a new model. There is a good way, already tested on many cars, to avoid unscrewing the main gearbox. Everything is very simple - tighten them not by 2 kg, but by 4 kg. We did it.

Consequences of an unscrewed g.k.

When starting a cold internal combustion engine, a knocking sound is allowed. for 2 – 4 seconds. If the knocking continues for more than this time or appears on a hot internal combustion engine, it is advisable to contact a service station as soon as possible to eliminate the malfunction of the engine.

And now the most important thing for those who are delaying repairs. An unscrewed cylinder head first breaks the oil drop ramp, wears out the rocker and camshaft cam due to incorrect clearance adjustment and knocks out the threads in the cylinder head, which leads to the replacement of the cylinder head with a new model)))

Timing chain tensioner

Installed on Niva 21214 and 2123. After passing 1 maintenance, I recommend getting rid of this part and replacing it with Pilot 214 (mechanical tensioner). The hydraulic chain tensioner is very unreliable, especially when starting a cold internal combustion engine. The main malfunction of the chain tensioner is that the oil from the tensioner flows back into the system (the tightness of the tensioner is broken), and accordingly, the chain tension has weakened. And what we get: when starting the engine if the tensioner is faulty, the oil needs time to fill the tensioner and bring it into working condition. And then there are only two scenarios: the chain will rattle for 5 seconds and become tense, or the chain will simply fly off, which threatens a very expensive repair of the cylinder head.

What kind of disks can be installed?

The manufacturer recommends installing R16 standard wheels. It is allowed to mount smaller wheels R15 on the car. It’s easier to choose tires for this size; there are plenty to choose from compared to 16-inch wheels.

The depth of the body arch of the Chevrolet Niva allows the driver to install 17-inch cast wheels on the car. Correct installation of wider wheels will allow you to:

• improve directional stability and vehicle control;
• reduce braking distance in case of unexpected braking;
• increase the vehicle's maneuverability in off-road conditions.

It is worth noting the negative aspects of such a replacement:

• the likelihood of damage to the integrity of the disc increases when the tire is damaged, for example, from a side impact;
• the smoothness of the ride decreases, the movement on it becomes harsher, and vibration increases.

Now about the tightening torque

Before fixing the cylinder head, carefully inspect the bolts. Their type is M12×1.25. Be sure to measure the threaded rods - be prepared to replace any element whose length is more than 11.7 centimeters. The fact is that they stretch during use, which means they no longer hold properly.

It is recommended to tighten the bolts in five stages. This will save you from having to tighten them additionally each time during preventive examinations.

In the first step, tighten all ten bolts by hand, and then tighten them in the correct sequence with a torque wrench, with a torque of 20 Nm.

On the next run, increase the indicator to a minimum of 70, and a maximum of 85 Nm. Here it is advisable to strive for the moment to be closer to the last digit.

Next, tighten the 11th bolt - a force of 31 to 39 Nm is required here.

Finally, secure the bolts by turning them one by one with a wrench exactly 90 degrees. Then repeat this procedure again.

There is nothing complicated in the process described, but, of course, a lot of effort must be applied. To make the work progress faster, hire an assistant - in this case you can complete it in 3-4 hours.

axel-roman › Blog › Tightening torques. Chevrolet Niva.

Tightening torque table for Chevrolet Niva 2123. If you don’t have the book, you can look it up here. Tightening torques for cylinder head, engine, gearbox, transfer case, axles and brake system.

Why do you need a wide torque range?

Because all dynamo keys have an error. It is better to take the moment in the middle of the range. Minimum permissible - maximum tightening torque. For example: 100-110 Nm.

Reminder:

In places where there are many tightening points, for example, the intake manifold. It is better to go through the final moment several times. The dots in the middle “sag.”

List of tightening torques (table):

— Cylinder head bolt (cylinder head). M12×1.25.

Clean the threaded holes from oil.
Degrease surfaces.
If the length of the bolt shaft exceeds 117 mm, it should be replaced with a new one.
A non-shrinkable metal-reinforced gasket is installed between the block and the head. Reuse of the gasket is not permitted.
To ensure a reliable seal and avoid tightening the bolts during vehicle maintenance, we tighten them in four steps:

1st step - tighten bolts 1–10 to a torque of 20 Nm; 2nd step - tighten bolts 1–10 to a torque of 70–86 Nm, and bolt 11 to a torque of 31–39 Nm. 3rd step - then turn bolts 1–10 by 90°; 4th move - and another 90°;

It is advisable to use a rotation scale.

— Hydraulic support of the valve lever. (Hydraulic compensator) М24×1.5 15–20 Nm — Camshaft sprocket mounting bolt. M10×1.25. 41–51 Nm — Nut securing the camshaft bearing housing. M8. 18–23 Nm

Apply a thin layer of engine oil to the camshaft cams and journals, bearing housing beds and working surfaces of the valve drive levers. When installing the bearing housing, make sure that the installation sleeves (on the outer mounting studs of the cylinder head on the left side) fit into the housing housings without distortion.

What wheels were installed on different car bodies and configurations?

The ride comfort, the condition of the chassis and the further operation of the vehicle depend on the dimensions of the wheels and tires installed on the vehicle.

To ensure the correct operation of the above criteria, vehicle manufacturers provide the recommended parameters of parts, components and assemblies installed on the vehicle in the vehicle operating instructions. The same applies to the Niva Chevrolet.

AvtoVAZ recommends the following wheel and tire sizes with appropriate air pressure.

Advice. It is not recommended to install alloy wheels that are too large on a Chevrolet Niva; this may cause problems with the operation of the vehicle’s chassis.

The speed index is an important parameter when selecting tires. Depending on the speed at which the car moves, wheels with a certain index are selected:

• Q – up to 160 km/h;
• S – no more than 180 km/h;
• T – up to 190 km/h.

As for the load capacity of the car, before installing the wheels, you need to check the markings on the tire. It corresponds to 85, 88, 92. The minimum carrying capacity of the car is 515 kg, corresponding to index 88.

Pros and cons of secret fasteners

To prevent your Chevrolet Niva from being “taken off” the next night after installing new tires, it is recommended to install 1 secret nut on each wheel. No matter how new technologies develop, more reliable means of stingray theft have not yet been invented. Hence the first and main advantage of the secret: such fasteners will help protect much more expensive property from thieves than it is worth.

Modern secrets are no match for the first ones that appeared in distant Soviet times. They are structurally more perfect and differ in aesthetics, which is important. The part is an elongated nut with an adapter for an individual key. If you choose closed-type decorative fasteners of the same length for it, then the wheel as a whole will look quite aesthetically pleasing.

The secret mount is very useful for the spare wheel of the Chevrolet Niva, which is screwed to the bracket on the rear door with ordinary nuts, and therefore most vulnerable to thieves. To unscrew secrets, the following types of keys are made:

To prevent the nut from being grabbed by a gas wrench or other similar tools, the lock on top is equipped with a rotating bushing (shell), and the place for the wrench is located in a recess. Cheap products and fakes may not have a shell, so you cannot buy such nuts. The disadvantages of secrets are:

• The tightening torque is weak, so the remaining nuts must be held securely;
• any tricky fastener can be unscrewed if the thief has the time and opportunity to do so;
• the need to always have the key with you and not forget it under any circumstances.

The last drawback is a real scourge of forgetful drivers. If the ramp of exits 2 is punctured: go get the key or call a tow truck, otherwise the wheel cannot be removed.

Removing the hub

To do this, dismantle the conical bushing.

Unlocking the nuts is done by gently tapping them through a chisel.

After which, using a size 19 wrench, the rear and front clamps of the lever to the knuckle are unscrewed sequentially,

not forgetting to get rid of the locking plate.

Then, using the keys “17” and “10”, as well as a flat screwdriver, the brake circuit hoses are removed from the steering knuckle.

Also interesting: How to correctly perform chip tuning of a Niva engine

Having placed the stop under the lever from below, use two “13” keys to unscrew the nut located on the bolt that secures the ball mount to the upper lever. Unscrew 2 more nuts in the same way. And take the knot to the side.

Dimensions of standard wheels

A peculiarity of domestic car models, including the Chevrolet Niva, is the lack of individual wheels for a specific year of manufacture of the car.

Common wheel sizes for Niva Chevrolet:

• rim width 8 inches;
• rim diameter 15 inches;
• offset ET40 – distance between the plane of fastening and symmetry.

Failure to comply with these parameters may result in:

• rapid wear of mechanical parts and components of the vehicle chassis;
• Excessive load on the wheel arches of a car and their breakdown, for example, the use of wheels with a dimension greater than R16 and a high rubber profile, will negatively affect the condition of the fender liner. Its surface will be erased. On the Internet you can see a large number of photos devoted to this topic.

Advice. Before purchasing a new wheel, it is better to consult an experienced specialist.

Another important parameter is the bolt pattern or drilling of the disk. It is designated by the Latin letters PCD. For Niva Chevrolet it is installed by the manufacturer with dimensions 5x139.7. The number 5 means that the disk is fixed to the hub with five bolts, which are located on a circle, and the distance between adjacent fastening bolts corresponds to 139.7 mm.

The center hole (DIA) of the rim is 98.5mm. Therefore, when choosing a wheel, you need to pay special attention to this parameter, since a discrepancy from the standard even by 1 mm will certainly affect the quality of the disk fastening to the hub. After some time, due to a loose fit, the hub will simply wear off.

And the last no less important parameter is the ET offset, which should not exceed a value of 40. Otherwise, this will lead to failure of the internal bearing. The most acceptable offset for the Niva Chevrolet is ET35.

What does chatter mean?

The comfort of travel, as well as the condition of the chassis and operation of the car depend on the size of the wheels and tires For proper functioning of the car, the manufacturer’s instructions indicate the appropriate parameters of components, parts and other parts installed on the technical vehicle.

Attention! You should not install large diameter alloy wheels on your car.

The speed index is one of the important parameters taken into account when choosing tires. Depending on the speed indicator, wheels with the corresponding index are selected :

1. At speeds up to 160 km/h - Q.
2. Up to 180 km/h - S.
3. If the speed reaches 190 km/h - T.

To correctly determine the load capacity, you need to check the markings on the tire (85, 85 or 92). For example, the minimum load capacity of 515 kg is 88.

A distinctive feature of the Niva Chevrolet manufacturing is the absence of spare wheels for the year in which the car was produced.

List of generally accepted sizes:

1. Width: 8 inches.
2. Diameter - 15 inches.
3. The distance between the symmetry and the plane of the fastener is the offset ET40.

If these parameters are not followed, this circumstance can lead to negative consequences.:

1. Wear and tear of mechanical elements and components of the chassis in a short time.
2. High load on discs and their fracture. For example, if you use wheels with a size larger than radius R 16 and a high rubber profile, this will not have the best effect on the fender liners - the base will be erased.

Advice. Before deciding to purchase a new wheel, you should consult your dealer.

An equally important indicator is the drilling and loosening of wheels on a Chevrolet Niva . Its designation is PCD. For this car, it is installed by the manufacturer with dimensions of 5 * 139.7, which means:

1. The number “5” - the disc is secured to the hub with 5 bolts located around the circumference.
2. The number “139.7” is the distance between fasteners.

DIA is a hole made in the center, equal to 98.5 mm . When selecting a wheel, you should pay attention to this parameter, since even a small deviation from the standard will affect the quality of the disk fastener. After some time, the hub will wear down.

ET offset is also an important parameter ; its value should not exceed 40, otherwise the bearing will fail. The optimal offset for a car of this brand is ET 35.

The main feature of the nuts is their unique thread, which differs from the standard one . For cars, nuts with a size of M12x1.25 are provided. With a standard pitch of 1.75, due to the small amount of discrepancy, a self-tightening effect is observed during wheel rotation. In this regard, a large thread pitch will not work. The nuts are made according to factory standards, according to approved methods.

If the thread pitch is too large, it will not fit. Nuts manufactured at the factory are made to standards. If screwing is done on studs, then they come out from the other side, and the internal cavity has a cone-shaped appearance. The use of cone-shaped nuts has a positive effect :

• hole centering is ensured;
• The disc fits tightly to the hub.

There are nuts on a car:

1. Open. With a through hole.
2. Closed. The possibility of the pins passing through the internal cavity is excluded.

Closed type fasteners are used for cars . They are tightened with a wheel wrench No. 19. Products manufactured according to the standard are coated with chromium and are made of carbon steel.

The manufacturer recommends installing R16 wheels , as well as smaller diameter R15 wheels. For the last size the choice of tires will be easier to make.

The car has a body arch, the depth of which allows the installation of 17-inch wheels.

Installation of wide wheels allows:

1. Provide improved directional stability and vehicle control.
2. Reduce the distance if braking is necessary.
3. Increase cross-country ability if you plan to drive in off-road conditions.

Disadvantages of replacement:

1. The risk of failure increases if the tire is damaged.
2. The smoothness of the ride decreases, movement becomes more difficult, and vibration increases.

Many people try to install disks other than those recommended and supplied by the manufacturer . Thanks to the wheel arches on the body, this is possible. To avoid modifications to the body, wheels with dimensions of 215/75 with an offset of 35 are installed.

When installing a tire with a profile of more than 215 mm, it is recommended to trim the acre , and the ET offset should exceed 58 mm. Overhang size is from 40 to 45 mm.

Attention! Before planning the installation of disks, it is initially recommended to study the documentation for the car.

About the wheel mounting design

The fact that the wheel nuts are a special product is evidenced by a non-standard metric thread with a diameter of 12 mm with a pitch of 1.25 mm. Standard coils of the same diameter have a different pitch, 1.75 mm. That is, the wheel threads are made smaller in order to increase the reliability of the connection and implement the “self-tightening” effect due to constant rotation. Larger coils will not work here.

The factory nuts are sized so that when the thick stamped steel wheel is tightened, they will fit completely onto the stud. In this case, the element is equipped with a cone at the end, adjacent to the mating part on the disk. Due to the cone-shaped connection, 2 problems are solved:

• self-centering of the hole in the disk opposite the stud when the nuts are evenly tightened;
• more reliable connection of the wheel plane with the hub.

The pin, which carries the load of the entire fastening, is pressed into the hub on splines with an interference fit, and it is sometimes very difficult to knock it out. This is another reason to take the selection of parts for this unit seriously. All nuts available for sale for Niva can be divided into 2 types:

1. Open, the pin passes through them when twisted. The car is equipped with such parts at the manufacturer.
2. Closed, with a blind hole. Installed on Chevrolet Niva, but the size is also suitable for VAZ-21213.

Factory elements are manufactured with a size for a 19 mm wheel wrench. Various parts found in stores can be made with a 21 mm turnkey, and reach a height of 30 mm or more. The standard length of the open VAZ-2121 nut, made of uncoated carbon steel, is 17 mm. The new decorative parts have a nickel plated finish and a different protruding head shape.

Torsion bolts (plastically deformable)

cylinder head bolt of a new type Part number: 21213-1003271-01-0. Name: Torx cylinder head bolt. This name (torsion bar bolts) is fundamentally incorrect, but what can you do if they are called that on all forums and in all stores. According to science, when they say torsion bar, they mean deformation from twisting. And in this case, tensile deformation. In stores, these bolts are also called cylinder head bolts for Niva Chevrolet or cylinder head bolts of a new type. I also came across the name torx or chamomile. These bolts, unlike hardened ones, provide a constant load. That is, in a very primitive way we can talk about the grommet effect, that is, about the constant force to compress the cylinder head gasket in the axial direction of the bolt. These bolts are widely used on imported engines because they avoid human factor errors. In fact, you don't need to tighten with the precision of a torque wrench. The final values ​​are taken as angular values. I don’t really like this approach, but such things are now commonly called “assembly guarantee”.

Why change the mount?

There are several reasons why Niva car owners change their wheel nuts to new ones:

Old nuts that are worn or mechanically damaged do need to be replaced, especially when they have poor threads or missing edges. It is difficult to tighten such a part with a torque of 10-11 kgf/m to securely fasten the wheel. It’s better to install a new set; it’s pointless to change 1-2 fasteners. The main thing is that the threaded part of the stud remains normal.

Alloy wheels, although thicker than stamped steel ones, can theoretically be fastened with factory nuts. Another thing is that such details will ruin the entire appearance of the new wheels, so in such a situation it is better to install elements that are in harmony with the wheel. There is another point: in some models of alloy wheels, samples are made in the form of a hemisphere, rather than a cone. Then the standard fasteners will definitely not fit; you need to purchase nuts with a spherical end that fit into the mating part of the rim.

In addition to improving the appearance of the car, there is another reason that forces you to change 1 out of 5 nuts to a special one that can only be turned with an exclusive key. The reason lies in the high cost of car tires and storing the car itself in the open air in the yard, as often happens in cities. To prevent tires from being stolen at night, one clever security nut is installed on the car.

How to disassemble and reassemble the cylinder head

Knowing the procedure for replacing a faulty element, you can carry out repair work yourself in your garage. But still, it is best to contact a specialist, since even a minor inaccuracy during work can lead to very serious consequences.

What kind of wheels does a Chevrolet Niva have from the factory?

Owners of Nivs received different wheels and tires in different configurations. So what kind of wheels does the Chevrolet Niva have from the factory?

Owners of fifteen-inch wheels received original tire sizes of 205/75 R15 and 205/70 R15. Owners of sixteen-inch wheels got size 215/65 R16.

Wheel bolt pattern Niva Chevrolet

The bolt pattern of Chevrolet Niva wheels is a parameter that is marked as PCD in the wheel markings. The bolt pattern of the Niva Chevrolet wheels is 5×139.7. These numbers marked PCD mean that the wheels on the Niva are mounted on 5 wheel bolts, and the distance between the centers of the holes for them is 139.7 mm. There is also information that in 2002, modifications of the Chevrolet Niva 1.7 and 1.8 i were fitted with wheels with a bolt pattern of 5×139 and an offset of ET 48. Please note that you cannot use wheels with a bolt pattern of 5/139 if you are prescribed to use 5 /139.7!

Bolt pattern 5x139.7 on a cast wheel

Bolt pattern 5x139.7 on a stamped disc

The fact is that the difference in diameter of less than a millimeter is unnoticeable during installation - the disc will still sit on the hub studs. But when tightening the nuts, the wrong disc will not be properly secured. That is, the wheel can simply unscrew while driving! Therefore, carefully observe all parameters of the Niva Chevrolet wheel size.

Niva Chevrolet wheel size

What about other important disk parameters? If the diameter of the rims of your Niva Chevrolet wheel is 15 inches, then in addition to the PCD 5×139.7 bolt pattern, they have a width from 6J to 6.5J (in inches), an offset of 40 and a hub hole diameter of 98.5 mm. If you have 16-inch wheels, then they have a width from 6J to 7J, but other parameters are the same.

What is the wheel bolt pattern of the Chevrolet Niva under 15 and 16 radius

The wheel bolt pattern on the Chevrolet Niva provides for the installation of 15 and 16 inch wheels . For this purpose, tire sizes 205/75 R15 or 205/75 R16 are selected. If you use wheels with these parameters, the driver and the car itself will have fewer problems. But there are some deviations from the factory values.

For example , 215/75 R15 tires fit perfectly into the wheel arches, and do not touch the wheel arches or other body parts even with the maximum steering angle while driving off-road. But if you install mud tires of a similar size, then in other positions the side lugs can independently engage the bumper or wheel arch liners. 225/75 R16 tires can drive in the same way, but if the steering wheel is in the extreme position.