Thermostat "Opel Astra H": description, features, replacement, and device

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2020-01-16 06:00:15

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The cooling System of an internal combustion engine requires periodic servicing. Often it comes down to replacing the antifreeze every 1-2 years of operation. Unfortunately, this is the wrong approach, because this system is quite complex and has a large number of parts, each of which performs its role during operation of the motor. Let's look at the thermostat "Opel Astra H" and device.thermostat Opel Astra h

Device and principle of operation

The thermostat Consists of a spring, a cylinder and a special pin. The essence of the work lies in the fact that in a closed cylinder contains a wax in the form of a ball. Under the influence of temperature it begins to melt and expand. The pressure pushed the pin which in turn opens and closes the valve.

It Turns out that initially, a large circle is closed and coolant only circulates in a small circle. When reaching a certain temperature (operation) valve opens and the cooling liquid circulates on the big circle through a radiator. Work in a small circle provides more rapid heating of the motor, and a large Bo - effective cooling while riding. This is, in fact, the radiator and the fans. The radiator in modern cars is cooled either by air flow or is blown by fans.

How to understand what the thermostat is "Opel Astra H" defective

This node fails rarely, but it happens. If you do not notice the damage in time, it is possible to overheat the motor or waiting hours for a warm-up to operating temperature. All this is due to the jamming of the thermostat valve.thermostat Opel Astra h price

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To Stay, he can as in the closed position and in the open. If the thermostat is stuck with the valve closed, then upon reaching a certain temperature circulation on a large circle is not the cooling efficiency of the motor is reduced. As a result, overheating. If the valve is open, the car will be a long time to warm up and increase fuel consumption. In any case, you need to understand that jokes with the cooling of the engine is bad and the sooner taken, the better.

Removing thermostat on "Opel"

The Process of dismantling this site on the car brand "Opel" is somewhat different from the others. The first thing you need to understand where is located the thermostat. It is located to the right of the engine, between the battery and motor closer to the latter. For work on the replacement thermostat you need to remove the battery and preferably the area of its fastening. It is very simple, drop the terminal and turns the three bolts.

The Next step - remove the terminal from the thermostat housing and remove the nozzle. Will result in a certain amount of antifreeze, so prepare in advance Tara. After that, Unscrew 4 torx-screws (asterisk) and take out the thermostat. At the same time you can do a visual examination. If the rubber valve seal has failed, then replacement. The same applies to the case of jamming. In principle, the replacement of the thermostat to "Opel Astra H", is the same as any other car brand, except that in our case you need to remove the battery for a more comfortable experience. Now go ahead.thermostat Opel Astra h 1.6

Thermostat "Opel Astra H" Z18XER: customer testimonials

One of Sanych is buying a new thermostat. Today a huge number of them. The best of them - original. However, these products have a high cost, but the quality is almost always consistent. There are Chinese counterparts, they are characterized by low cost and poor quality. To put such thermostats is not recommended because of their unpredictability.

The best option - quality analogue. It can be any of the characteristics of the thermostat from another vehicle or from a famous brand at an affordable price. Consumer reviews mostly boil down to buying the original. Its price is about 800–1000 rubles, but the quality is at very high level.thermostat Opel Astra h z16xer

Related work

As noted at the beginning of this article, the cooling system should be regularly maintained. If you decide to change the thermostat, it's time to pour new antifreeze and put the filler cap. The latter also has a valve that is triggered when a certain pressure in the system. If he does not hold, then the antifreeze will not boil at 120-125 degrees and at 105. If he is stuck in the closed position, it may break the radiator due to overpressure.

In any case, it is better to install the new cover and replace the antifreeze, especially if it had not been done. As for the coolant, then there is also important to pay attention to its quality. It is desirable, of course, cover what is recommended by the manufacturer or certified counterparts. Poor quality coolant can lead to such unpleasant consequences as the constant tripping of the cooling fan, boiling, etc.

Health Check thermostat

Often the replacement of a unit is not required, and the problem may be caused by other reasons. In this case, it is recommended to check the thermostat. To make it simple enough. On warm engine it is necessary to try the top and bottom pipes comingto the radiator. Both should be hot. If the lower is cold, this indicates a stuck valve in the closed position. Consequently, the coolant does not circulate in a large circle.replacement thermostat for Opel Astra h

You Can also try the bottom of the radiator if it is cold, and the bottom pipe is hot, then it is likely clogged. In this case, before replacing the antifreeze a few times to flush the system and clean the radiator outside, as it becomes clogged with road dirt. If the thermostat is "Opel Astra H" 1.6 is still inoperative, then it must as soon as possible to replace.

What are the findings

As you can see, to replace the thermostat "Opel Astra H" Z16XER is not difficult. This can be done with a minimal amount of tools. All work will take from one hour to two. But you can gain experience and a few thousand savings. Try to monitor the integrity of the system. If there is a leak in the radiator, then it needs to be eliminated. To do this, or sapav or replacing with new. You can also use a special powder, which is hot filled into the filler neck of the cooling system with the engine running. The powder can tighten a small leak and thus solve the problem for a while.thermostat Opel Astra h z16xer reviews

As you can see, there is nothing difficult to change a thermostat "Opel Astra H". Its price is about a thousand rubles (the original), a quality equivalent to cost 600-700 rubles, and Frank China - 300-400. Not such a big amount to save, the more that is done is quite responsible and has to work like clockwork. It is crucial to buy a suitable thermostat, as there are "late" and "early". The difference between them is that one is displayed with a slight delay, and others before. Better use the VIN number the car and buy just what stood out from the factory.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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