How do you determine that lifters do not work?

Let's now talk about the lifters, which lies at their core, the purpose and principle of operation, as well as how to determine that the lifters do not work. A bit of history. The first patents for hydraulic compensators were registered in the U.S. in 1920. A full-scale production of American cars with hydraulic lifters began in 1960. Since then, the technology spread throughout the world. Now back to our topic. When operating an internal combustion engine of its parts are heated and growing. This can lead to problems such as failure, accelerated wear, deterioration of the characteristics of power units. And that is deleted at the design stage between certain parts creates heat clearance. Such gaps are caused by heating the motor are absorbed through the expansion of parts. But over time, as a result of wear, heating parts is not enough to absorb the gaps. Thus, the characteristics of the engine start to deteriorate. On the performance of the power plant thermal gap has a direct impact. Because the wear leads to permanent changes in gaps in the early twentieth century, decided to implement a motor mechanism for regulating them by means of conventional wrenches. But such a procedure had to be done regularly, hence the growing complexity of maintenance, and so raised its price. These problems are solved by means of hydraulic compensators. Regardless of the degree of wear and temperature, hydraulic lifters allows you to fully absorb the gaps between the tappet and camshaft. Lifters are installed on various kinds of timing in any location of the camshaft (upper or lower). Depending on the construction timing, hydraulic lifters are divided into four main types: gidrotolkateli; roller gidrotolkateli; gidroopory; gidroopory to install a lever or arm. "+" Hydraulic compensators appearance lifters expelled valve clearance adjustment mechanism. Thus, he began to work more smoothly. In addition, reduced shock loads, reduced wear and engine noise. Become closer adherence to the duration of valve timing. This had a positive impact on the safety of the engine and fuel consumption. "-" Hydraulic lifters compensators However there are drawbacks, and equipped them engines - is characterized by its own characteristics in operation. One disadvantage is substandard work cold engine at start-up, while in the lubrication system oil pressure is minimal or absent. Hydraulic lifters, as well as any device can fail, and the main reason would be dirty motor oil channels, as well as the wear of working surfaces. Contamination can occur when you use the wrong oil in non-compliance with the terms of its replacement, at fault oil filter, which passes through the bypass valve dirty oil. When the engine lubrication system is faulty, slow lifters fill with oil, and gaps in the timing is not absorbed. For proper operation of hydraulic lifters, its internal volume should be all filled with oil. If not, then we can speak of a failure to the main function of this device, namely, the elimination of gaps in the details. Because there are shock, giving an effect characteristic thud. Thus, details are beginning to wear out faster, and work the engine to deteriorate. Damage to the hydraulic lifters can lead and hit a small oil particles from the worn-out parts, resulting in a node can jam. To prevent this, you need to constantly monitor and maintain the internal engine cleanliness. If when removing the timing cover you have found that the surface of the engine is dirty, then you should not use fast means of washing. In this case, the lifters may fail due to flaking chunks of dirt that can get in its internal cavity with the flow of oil. For small gaps between the moving elements lifters in the engine used low-viscosity oil of high quality - synthetic or semisynthetic. These include oil SAE 0W40, 5W40, 10W30, etc. Do not use mineral oils, since they possess high viscosity and tendency to resinous deposits. With regard to the diagnosis and replacement. If the lifters out of order, then there is a knock. To determine such a failure stethoscope is used as the metal sound travels well. If you have any doubts about your compensator, you must dismantle it and check. It is extracted with a magnet. And if you stuck lifters or baked onto it, then we must remove it with remover, but first must be welded to thrust him with a hook. There are such types of lifters, which provide for disassembly. This allows us to determine the degree of wear of internal parts. Disassemble lifters should be especially carefully to the surface of the conjugacy does not hurt. By visual inspection can detect external damage (dents, scrapes or scratches) end face lifters who are exposed to stress. During operation can also be formed groove. There is another efficient and simple way to control the state of the dismantled lifters. Filling it with oil, make sure he does not shrink at the hands of attachment efforts. If the result did not meet your expectations, then the hydraulic lifters is defective and must be replaced. And if the lifters are in good working condition, it can be defined as follows. He is in compression in the clamp, will provide considerable resistance, and reduce the length of 20-30 seconds. And quite insignificant.