In the proposed article we will try to carefully consider all the features of the check of the hydraulic compensators. This element of the car is a hydraulic mechanism, due to which an optimum clearance is established in the valve mechanism when exposed to high temperatures. When the car's engine heats up, the details increase due to natural processes, which is the main reason for reducing the gaps between them. The main task of the hydraulic compensator is to maintain an optimal clearance between the valve and the camshaft when the engine temperature changes.
The serviceable hydraulic compensator works efficiently and does not emit extraneous noise. The appearance of a knock may indicate wear of the mechanism. The increase in clearances leads to a decrease in engine power, accelerated burnout of valves and an increase in fuel consumption.
Causes of failure
Appearance of the hydraulic compensator
Перед тем how to check the performance of hydraulic compensators, следует определить главные причины, которые вызывают неисправности. Это могут быть:
- normal wear and tear of components of the device. Parts are in motion and constantly rub against each other, which leads to a violation of the tightness of the system;
- insufficient or high level of oil in the crankcase. Both in the first and in the second case the oil will be saturated with air. Thus, not the oily liquid itself is compressed inside the hydrojacker, but the air in it is also contained;
- contamination of the internal surfaces of the mechanism. Particles of metal and dirt seep inside the hydrocompensator. Since the device consists of high-precision elements, a small amount of pollution may well cause incorrect operation.
How to check hydraulic lifters
A defective hydraulic compensator will emit a characteristic sound when the engine is running. Very often, such noise is confused with the sound that occurs when valves operate incorrectly. To diagnose the health of the mechanism, a phonendoscope is used, which must be attached to the place where the hydraulic compensator is located. Comparing sounds allows you to detect a defective item. In the area of the defect will be heard a strong knock.
For the diagnosis of hydrocompensators often used phonendoscope
You can make a fixture for testing the condition of a hydraulic compensator. To do this, a metal rod is taken as the basis, in the middle of which a plastic or wooden handle is made. A resonator should be attached at either end of the rod. It can be made from ordinary beer cans. The other end of the rod must be attached to the valve cover, and the resonator - to the ear.
A faulty mechanism can also be identified by reinforced knocking. Having found a defective hydraulic compensator, it is necessary to dismantle it. After that it is necessary to conduct a thorough inspection. The device must be completely disassembled and check the degree of wear of all internal elements. If the lifter after the preventive actions performed is easily compressed with the fingers, it means that it cannot be restored. Slip mechanism just needs to be replaced.
Checking the hydraulic compensators is a fairly simple process, however, if you are not completely confident in your own abilities, it is best to contact an auto repair specialist.See also: Installing flame arrester instead of catalyst