How to install a new flywheel on a VAZ 2107. Recommendations for replacing the flywheel

Engine flywheel internal combustion serves to store energy. It helps the pistons pass the lower dead spots(especially when starting the engine). The flywheel transmits engine torque to the gearbox. There are three types of flywheels:

ordinary;
lightweight;
damper (springs are installed inside the damper).

The flywheel resource is usually 120-150 thousand km. It all depends on how intensely and in what modes the engine worked. Typically, installing a new flywheel is done after two sets of clutch friction linings have worn out, so the flywheel is replaced together with the clutch.

Flywheel repair

Flywheel malfunctions are obvious. This part experiences constant dynamic loads and friction, which leads to physical abrasion of the contact surfaces. As a result, vibrations or beatings appear, and the clutch may “slip.” Simple flywheels must be replaced, damper ones are restored in special workshops.

One more typical malfunction is damage or wear of the ring teeth. If the flywheel is still in good condition, the crown is changed; if not, the entire assembly is replaced.

Repairing damper flywheels is more difficult. They are repaired and restored in specialized workshops. Troubleshooting, precise measurements, balancing machines, services of a professional welder. The essence of the process is that worn surfaces are ground, springs and plain bearings are changed. The flywheel is balanced and tested under load. After repair, the flywheel planes should fall within the tolerances for backlash and runout.

Flywheel replacement

Replacement requires a car lift, transmission rack and standard plumbing tools.

Replacing the flywheel VAZ 2106

The engine of classic Lada cars has a conventional single-mass flywheel. Let's look at how to remove the flywheel and the technological sequence for replacing it:

First you need to gain access to the flywheel. If the engine is removed, there will be no problems; if not, you need to remove the gearbox and clutch basket;
Next, you need to keep the flywheel from turning. To do this, use a special clamp, but a regular screwdriver will do;
Having removed the gearbox, you need to unscrew the six fastening bolts, then remove the flywheel;
Installing a new flywheel . Install the flywheel in the reverse order of dismantling. The flywheel bolts are tightened crosswise with a force of 60.1-87.4 N.m.

Remove the flywheel

Welcome!
The engine flywheel is one of the most important parts in the design of a car engine and therefore, if the flywheel is severely worn, or if it is not correct installation, the car, when starting from a standstill, begins to “slip - this means that when starting from a standstill or while driving, the engine speed will jump and the car itself will not accelerate, but will only roar.” Therefore, the flywheel must be changed in a timely manner, since driving on a worn one will bring pleasure but only bring discomfort.

Note!
To replace, you will need to stock up on: A screwdriver, as well as an L-shaped socket wrench and, if possible, take a torque wrench with you!

When should you replace the flywheel?
It must be replaced when:

How will the car behave with a worn flywheel?

As noted earlier, the first thing that will most likely happen is that the clutch will slip on the worn flywheel.
And also, most likely, when starting off, the car will move, but this will be accompanied by strong vibration, which as a result will be transmitted to the entire machine.

How to replace the flywheel on a VAZ 2101-VAZ 2107?

Removal:
1) First, remove the transmission from the car. (For information on how to remove the gearbox, see the article entitled: “Replacing the gearbox”)

3) Next, secure the flywheel with a screwdriver so that it does not turn when unscrewing the bolts. After fixing, use a socket wrench to remove all six bolts securing the flywheel to the car engine.

Note!
Unscrew the bolts crosswise, because this will be much more convenient!

4) Now remove the flywheel itself and remove the support washer along with the flywheel.

Note!
When you remove the flywheel, be sure to look at the mark “indicated by the letter A in the photo” before removing it and then remember or take a photo of how the flywheel is installed relative to this mark in order to install the new flywheel in the same way! (Be sure to read the “” paragraph at the bottom of the article)

Installation:
1) First install the new flywheel in the same position as the old one. (Determine this position by the mark)

2) Then install all remaining parts in the reverse order of removal.

Note!
When it comes to tightening the flywheel mounting bolts, tighten them evenly, crosswise. And when all the bolts are tightened, check how the flywheel is positioned; there should be no slopes or distortions, otherwise this will lead to rapid wear!

Important!
After removing the old flywheel, try not to turn crankshaft Otherwise, installing a new flywheel may be difficult.

Note!
But if you still crank the crankshaft, then in this case set the piston of the fourth cylinder to the “TDC - Top Dead Center” position! (For information on how to set the piston to the “Top Dead Center”, see the article entitled: “Installing the piston of the fourth cylinder to the TDC position”)

After the piston is installed, install the new flywheel in its place, strictly vertically with the mark up and nothing else!

For newbies!
Question: Where is the friction surface of the flywheel, as well as the ring gear, and all six mounting bolts?
Answer: A – Flywheel friction surface.
1 – Ring gear.
2 – Flywheel mounting bolts.

4. Remove the support washer while holding the flywheel.
5. Remove the flywheel.
6. Check the condition of the ring gear; If the teeth are damaged, replace the flywheel.
7. The surfaces of the flywheel mating with the crankshaft and the clutch driven disc must be free of scratches, burrs and completely flat. If on work surface 3 (Fig. 4.5) of the flywheel under the clutch driven disc there are scratches, grind this surface, removing a layer of metal no more than 1 mm thick. Then grind surface 2, maintaining the dimension (0.5+0.1) mm and ensuring parallelism of surfaces 2 and 3 relative to surface 1. The tolerance for non-parallelism is 0.1 mm. After grooving, install the flywheel on the mandrel, centering it along the mounting hole with the emphasis on surface 1, check the runout of planes 3 and 2. At the extreme points, the indicator should not show runouts exceeding 0.1 mm.

Rice. 4.5. VAZ 2106 flywheel: 1 - mounting surface to the crankshaft flange; 2 - clutch mounting surface; 3 - supporting surface of the clutch driven disc

Welcome!
The engine flywheel is one of the most important parts in the design of a car engine, and therefore, if the flywheel is heavily worn, or if it is installed incorrectly, the car begins to “slip” when starting from a standstill - this means that when starting from a standstill or while driving, the speed is the engine will jump and the car itself will not accelerate, but will only roar.” Therefore, the flywheel must be changed in a timely manner, since driving on a worn one will bring pleasure but only bring discomfort.

Note!
To replace, you will need to stock up on: A screwdriver, as well as an L-shaped socket wrench and, if possible, take a torque wrench with you!

When should you replace the flywheel?
It must be replaced when:

How will the car behave with a worn flywheel?

As noted earlier, the first thing that will most likely happen is that the clutch will slip on the worn flywheel.
And also, most likely, when starting from a stop, the car will move, but this will be accompanied by strong vibration, which as a result will be transmitted to the entire car.

How to replace the flywheel on a VAZ 2101-VAZ 2107?

Removal:
1) First, remove the transmission from the car. (For information on how to remove the gearbox, see the article entitled: “Replacing the gearbox”)

3) Next, secure the flywheel with a screwdriver so that it does not turn when unscrewing the bolts. After fixing, use a socket wrench to remove all six bolts securing the flywheel to the car engine.

Note!
Unscrew the bolts crosswise, because this will be much more convenient!

4) Now remove the flywheel itself and remove the support washer along with the flywheel.

Installation:
1) First install the new flywheel in the same position as the old one. (Determine this position by the mark)

2) Then install all remaining parts in the reverse order of removal.

Important!
After removing the old flywheel, try not to rotate the crankshaft, otherwise installing a new flywheel may be difficult.

After the piston is installed, install the new flywheel in its place, strictly vertically with the mark up and nothing else!

It is very important to install the flywheel correctly, otherwise problems will not be avoided in the future. There is a certain scheme according to which this should be done, but the matter also has its own nuances. Let's try to understand everything in more detail.

General concept of the flywheel

The part of the car engine that is designed to regulate the supply of energy is called the flywheel. It is thanks to this unit that the accumulation of energy is ensured with a greater supply of rotational motion.

So the flywheel is in modern car needed in order to:

start the internal combustion engine;
connect the internal combustion engine to the gearbox and transfer the CM from the engine to the gearbox;
regulate crankshaft rotation.

Representing a rather large metal disk with a crown placed around the edge, the flywheel easily engages with the starter after turning the ignition key. Thus, the engine starts.

Flywheel defect, removal

Problems with a car usually begin after a significant mileage. In particular, clutch performance deteriorates. The flywheel itself can last up to 200-300 thousand kilometers, but it also happens that it deteriorates much earlier. In this case, you have to look for reasons for rapid wear, most likely related to climate, clutch malfunctions, etc.

It is clear that if a car's clutch fails, the flywheel is also affected.

The algorithm for removing the flywheel from a car is as follows:

First, the battery is removed, the oil is drained from the gearbox, and the starter is dismantled;
then the gearbox and clutch are removed;
After this, the bolts securing the flywheel are unscrewed.

Advice. When unscrewing the flywheel bolts, the flywheel may rotate. To stop it, you have to insert a screwdriver or pry bar between the teeth of the flywheel.

hold the flywheel with one hand, and with the other, remove the last retaining bolt along with the lock washer for the bolts;
It's time to carefully remove the flywheel from the crankshaft.

Now that the flywheel has been removed, you can inspect it, or, as is commonly called, carry out troubleshooting. The first step is to inspect the ring teeth, which grind down over time, and if initially installed incorrectly, become completely unusable, preventing the flywheel from engaging with the starter.

In this case, there is no need to think - if there are obvious damages and flaws on the crown, the flywheel needs to be updated or restored. It may be that everything is fine with the teeth, but the mirror of the friction linings has severe damage and other malfunctions.

Attention. Repairing the flywheel will involve replacing the crown.

Reinstalling the flywheel involves first of all degreasing the bolts and threaded holes for them. Then sealant is applied to the threads, the part is mounted back in the same order as it was removed. But it is important to be able to align the holes at the end of the crankshaft and the flywheel (they should be located asymmetrically).

Nuances of proper installation

Correct installation of the flywheel implies, first of all, that the marks match. If, when removing the flywheel, the position of the assembly relative to the crankshaft and the sensor was not noted (it is located right between), this leads to a problem.

Experts say that the 20th tooth after a flywheel break, counted up clockwise, should be facing the crankshaft sensor, and the shaft itself should be at TDC.

Attention. You can check the position of the crankshaft from the back of the engine. There is a special sign there.

In addition, knowledge of how to properly install the flywheel will help you fully realize the capabilities of the car engine. At the factory, the system is initially equipped with a standard unit. For example, on a VAZ the unit is of the old format, dating back to the era of the Fiat prototype.

Naturally, this was the reason for modernization and alterations. And today innovative techniques come to the aid of the tuner.

Let's consider these possibilities.

Installation of a 2-mass flywheel makes it possible to shift the RVK (mesomerism of oscillations) to a rotation amplitude two times smaller than idling ICE. In a 2-mass flywheel, the spring system is not located in the clutch, but between the cast iron parts.

Despite such a large number of positive properties, a 2-mass flywheel is rarely the choice of tuners, since it is expensive, cannot be repaired in a garage due to high-precision manufacturing, and for a number of other reasons.

Attention. Among other things, the 2-mass flywheel often fails. At starting the internal combustion engine or the engine stops, a characteristic creaking, noise and vibration is heard, which indicates problems with the unit.

More in an effective way To reduce the load on the gearbox, install a lightweight flywheel model. In this case, the actual weight of the product is reduced by the maximum possible amount. The new unit ultimately weighs 4-5 kg less than the standard version.

Installing a lightweight node model involves a lot of nuances. First of all, this concerns the groove of the flywheel on both sides.

Summary: If for any reason the position of the shafts and flywheel is in doubt, it is recommended to do the following. Align the mark on the crankshaft with the mark on the lower timing belt casing. At the same time, a mark is placed on the flywheel, which should point to the crankshaft sensor. As for the camshaft mark, it should be at the level of the cylinder head edge.