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The reasons for which the hydraulic hammers are knocking

No matter how sophisticated modern cars are, they still have some problems, like any other technology. And, of course, the most unpleasant are the faults of the elements that make up the engine system. The ability to independently and timely identify a problem in your car helps in the future to avoid serious and expensive repairs. For example, you noticed that the hydraulic hammers are knocking. But the reasons that led to this, there are many. The main thing is to determine them correctly.

Possible causes of knocking in hydraulic compensators

As already mentioned, the factors that cause this problem can be completely different, but they are all conventionally divided into two groups. The first includes faults that have occurred in the mechanical or hydraulic part of the expansion joints. The second is a malfunction in the engine systems that are responsible for supplying oil to them. Each of these two groups, in turn, consists of several possible failures, due to which the hydraulic compensators knock.

Factors of the first group

• The surface of the plunger pair is mechanically worked.
• The oil supply valve is clogged or broken.
• There were obvious defects on the elements of the hydraulic compensator itself.
• Dirt on the surfaces of the expansion joint.
• Air purification of the HA system.

Factors of the second group

• Air entering the oil, causing a decrease in its compressibility. This can happen for a variety of reasons, for example, because the liquid itself is too high or too low.
• The oil filter does not function. This can happen due to its contamination.
• Clogging of oil channels, ensuring oil supply to the system of hydraulic compensators.
• Use of poor quality or unsuitable oil. The specific type of substance is intended for use in certain climatic conditions. If the wrong oil is poured into the system, external factors can affect its viscosity, and because of its inadequate performance, the engine will overheat and this will adversely affect its mechanical characteristics.

Methods for identifying and fixing problems

So, because of one or more of the above reasons, the GK system may fail. However, it should be noted that most often the hydraulic compensators do not knock all at once, but only one of them. The easiest way to detect a problematic element is through acoustic diagnostics. For this, the functioning of the GC mechanism is checked. It should be taken into account that it is quite difficult to determine the reason why the hydraulic compensators are knocking, so it's best to turn to the power plant. Experts disassemble the parts, carefully wash them and then check the ability of each of them to keep the effort. At the same time, there is a mandatory replacement of consumables (filters, gaskets) and oils. If a faulty GC is found, it is replaced with a new one. But it can also happen that even after all these actions the hydraulic compensators knock, as before, and therefore, alas, one should prepare for a long and expensive repair of the engine.

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