Symptoms of engine cushions, how to identify a malfunction

To get the car to move, he needs an engine. This unit is installed in the front of the body (in most cases). It is attached to the subframe or to the side members. However, the vibration that gives the engine when working, are heavily surrendered to the body. To smooth them, it is installed by means of rubber cushions. They are a kind of buffer. Over time, all rubber products become unusable. No exception is the engine support. What are engine cushions, signs of malfunction and methods of elimination - later in this article.

Characteristic

What is this detail? The engine cushion is a gasket between the body elements and the power unit. This is installed on all cars without exception. In the Soviet "Zhiguli" pillow was a durable piece of rubber with fasteners on both sides. At more modern "nine" and "eight" (and later all VAZs with front-wheel layout), the full-length rubber-metal bearings were already installed.

So, the power unit was fixed on four pillows. Two of these are on the gearbox, and the rest are on the engine. To avoid unnecessary loads, the box with the motor is rigidly fixed. Any distortion leads to a change in the geometry of the primary shaft. As a result, all vibration is strongly transferred to the gear lever and the transmission itself.

Where are the pillows? On the engine this element is installed from several sides:

• Front cushion. It is fixed to the front beam of the power unit.
• Back cushion. Fits to the front subframe. Located in the bottom area.
• Right support. It is located on top, at the front side member of the body.

Also note that the rear support is not on all cars. This function is performed by the gearbox itself.

In this case, it is closely attached to the motor. The pillows themselves are made in different shapes. Often are an aluminum or steel cylinder with a silentblock inside. For fixing on the body, the so-called "paw" is used. It also has a rubber spacer. This is how the modern engine cushions are arranged. Symptoms, how to diagnose the part, what affects wear and tear - we will consider in the course of this article.

Why wear out?

Many motorists ask this question. Symptoms of engine cushions may be different. First of all, this is due to the natural wear and tear caused by vibrations. The resource of these elements is about 150 thousand kilometers. The stronger the vibration, the greater the load on the support (especially if one of the cylinders does not work in the engine).

If you think that the resource directly depends on mileage, you are mistaken. The cushion wears out even when the car is in the garage. Over time, the rubber dries up. There are microcracks. Another negative factor is oil. It is necessary to change the oil seals in time, in order to exclude streaks.

The oil adversely affects the life of the engine cushion. Symptoms of VAZ 2110 malfunction may also be in the manner of driving. So, with a sharp start with a slip, a tremendous load is placed on the support.

How to determine quickly the malfunction of the engine cushion?

Identify the serviceability of the element without opening the hood.

During the movement, you will notice the characteristic signs of a malfunction of the engine cushions:

• There are characteristic knocks and clicks at the start and braking of the car (at the front).
• When driving on an uneven road, strong impacts are transmitted to the bodywork.
• At idle turns there is an excessive vibration.
• Bumps are given to the gearbox when driving (especially when the car is driving through pits).
• A strong vibration of the steering wheel in all modes of the engine.

Determine the state of the supports visually

Not always the above mentioned signs will indicate exactly the malfunction of the motor bearings. So, if there are impacts in the front of the body, you need to visually inspect the element. Where he is, we already know. So, open the hood and look at the state of the rubber buffer.

It should not be ruptured and cracked. For better convenience, it is recommended to use the inspection pit (especially if it is a front and rear support). Move it from side to side. There should be no play between the cylinder and the silentblock. If this is the case, the signs of a malfunction of the engine cushions are confirmed. The part must be replaced.

How to change hands?

To do this you will need a set of tools (heads and car keys), a jack and repair stands (since the engine will be "on weight"). So, we jack up the car on the right side. We hang the motor on the chain. We unscrew the bolts (there are 3 of them), which fix the support to the engine and the body. Next, remove the brackets and take the element out. . Install the new part in place .

To replace the back support, we jack the body on the left side. However, unlike the previous case, we will have to suspend and gearbox. We use a wooden substrate, so as not to damage the pallet. We unscrew bolts of fastening of a pillow and we take out it outside. In place of the old install a new one and perform the assembly in the reverse order.

Helpful Tips

Motorists recommend to replace the support in warm weather. In winter, the pillow "strongly dubes", and you can remove it only after pre-heating (it's a hairdryer or a blowtorch). If the support does not come out, it is recommended to use a lubricant type VD-40 or its analogue from the manufacturer "Mannol". Normal grease for this does not work.

Often, dust and moisture enter the cavity of the old pillow, which causes corrosive processes on the cylinder. It is not possible to remove the pillow. If you change the rear support, take into account the direction indicated by the arrow on the part. It must be installed in the direction of the car. Otherwise, there is a risk that the element will not withstand the loads and breaks.

Conclusion

So, we found out the main signs of a malfunction of engine cushions. The engine support is a very important part in the car. Therefore, you need to know how to identify its malfunction and how to change the part to a new one. We hope this article has helped you in resolving this issue.