With frequent operation of the car, the periodic replacement of the valve sleeves of the valves is almost inevitable. These elements are necessary in order to reduce the oil consumption in the engine. We will try to carry out such an operation independently.
How to determine what guide sleeves took place?
All bushing cars are presented in different ways, but the principle of operation is one. From valves directly depends on how to fill the cylinders of oil, or vice versa, the release of them from combustion products. Valves open and close the clearance in which the fuel mixture comes. To determine what extended valve bushings, there are a number of features that are listed below.
If you have noticed that oils began to spend too much, then it is worth the first thing to pay attention to the valves. Also characteristic noise in the engine area, especially near the heads, will indicate the problem. Lift the hood, boot the engine and listen carefully ,. If the engine works, but on his background there is some strange noise, then you should pay attention to all the same valves.
If for some reason you have been twisted the rod, then after it is replaced, it is necessary to immediately replace the valves in order not to wait for the emerge of their inopecy.
Replacing the valve sleeves - collecting tools
Before replacing the guides, it is necessary to make a certain preparation. Replacing the sleeves on all cars is approximately the same. There are small differences in the engines of certain countries, for example, the order of work on Russian and Japanese motors will be different. To produce this operation, a special mandrel is necessary, which can be ordered to order any familiar to the turner, or you can contact the workshop.
Also before replacing, you need to prepare a standard set of tools: a key, screwdriver, drills and similar things. It is worth noting that you will need to press the guide sleeves of valves, this is a special tool. This device is now sold in stores, but you can also make it yourself. In this article, exactly how to make this tool, we will not describe, but you can easily find information in other articles.
How to replace valve sleeve guide?
So, directly proceed to the work itself! So that everything has passed well and without any slip, you need to follow the following instructions. First, insert the mandrel alternately into the holes of the old sleeves and very carefully, without applying special efforts, we put shock with the hammer at the end of the mandrel. Thus, slowly and, most importantly, we neatly knock the sleeves. Then you need to clean this released place. Best of all, if there is such an opportunity, sweep the sleeve with compressed air.
To install new sleeves, they need to withstand in the freezer about two days, so they will be more compressed and then smoothly spread in the seating. Further, we need to heat the head of the cylinder block on an electric stove to about a temperature of 100 degrees, thereby expanding the seats. The last stage remained: I wear locking rings on the sleeve, insert them into the holes and also carefully, as we got them, we start to drive.
Please note if the caps are shed, it is not necessary to replace it. In this problem, the scan of the guide sleeves of valves will help. It is done manually, you simply lose the valve to the minimum clearance value. For the inlet valve, the value is from about 0.020-0.055 mm, and if we take the exhaust valve, the value should be 0.035-0.070 mm. To fully complete this article, it remains to find out which valve guides are better? Among themselves they differ in manufacturing material. Of course, it is best if the sleeves are cast-iron. Since in this case, the stronger the material, the better for use.
