3.5.2. Hermetic use as laying
The check point has some places where as laying hermetic is used. In avoidance during emergence operation in these parts leaks, it is necessary to observe some rules of use of hermetic. The thickness of the roller of hermetic, a continuity and its arrangement are essential. At too thin roller there can be a leak. On the other hand too thick roller will lead to expression of hermetic and, as, a consequence, to obstruction of oil channels. Therefore the roller of hermetic should be continuous and have the corresponding diameter. As after hardening of RTV cooperates with moisture from atmospheric air, it usually use for consolidation of metal flanges.
Details which gathered by means of hermetic, it is usually possible to disassemble easily without use of special means. However, in certain cases, hermetic between connected surfaces can be destroyed as a result of an easy postukivaniye by a beater or the similar tool. In this case, it is necessary to take measures not to damage the connected surfaces.
Surface preparation for hermetic drawing
Using a scraper or an iron brush, carefully clear surfaces on which it is necessary to put hermetic. The surface on which hermetic will be put, should be flat. Clear a surface of oil and extraneous materials. Do not forget to remove the remains of old hermetic in openings under installation of bolts.
Rules of use of hermetics
At assembly of details by means of hermetic it is necessary to observe some rules which are rather simple. The roller of hermetic should be continuous and not have gaps. Always completely frame with opening hermetic under installation of bolts. Superfluous hermetic can be wiped, while it did not stiffen. While hermetic did not stiffen yet (less than 15 minutes) establish connected details into place. After installation of details be convinced that hermetic got only to the right places. Do not allow oil or water hit in places of use of hermetic and do not get the engine until will pass time enough (about 1 h) after assembly.
Procedure of use of hermetic for different places can be various. Therefore when using hermetic it is necessary observe the rules given below in the text.