2.3.14. Head of the block of cylinders

Fig. 2.137. Components of a head of the block of cylinders: 1 – bolt of 10 N · m; 2 – GBTs cover; 3 – laying; 4 – valvate box; 5 – cover of an oil-filling mouth; 6 – laying; 7 – bolt of 4 N · m; 8 – laying of a cover of GBTs; 9 – vacuum pump; 10 – bolt of 4 N · m; 11 – valve of 1 adjustment of phases of gas distribution; 12 – sealing cuff; 13 – bolt of 10 N · m; 14 – cable fixture; 15 – sealing cuff; 16 – bolt of 10 N · m; 17 – case; 18 – laying; 19 – cargo eye; 20 – bolt of 25 N · m; 21 – bolt of 10 N · m; 22 – partition; 23 – laying of a head of the block of cylinders; 24 – bolt of 10 N · m; 25 – Hall's sensor; 26 – sealing cuff; 27 – bolt of 10 N · m; 28 – bolt of 20 N · m; 29 – bolt of a head of the block of cylinders



NOTE
When performing adjusting works replace самоконтрящиеся the nuts, bolts tightened on a certain corner, and also sealing rings and laying.
At installation of a new head of the block of cylinders with the established cam-shafts adjacent surfaces between roller levers and a bed of cams need to be oiled engine.
The plastic linings which are included in a repair kit for protection of open valves are allowed to be deleted just before the GBTs installation.
When replacing GBTs or laying of a head of the block it is necessary to merge old and to fill in new cooling liquid.


Check of curvature of the plane of a prileganiye of a head of the block of cylinders


Fig. 2.138. Check of curvature of the plane of a prileganiye of a head of the block of cylinders



Check curvature of the plane of a prileganiye of a head of the block of cylinders by means of a lekalny ruler and probes in several places.
The most admissible curvature of the plane of a prileganiye: 0,05 mm

Allowance for processing of GBTs

Fig. 2.139. Size of an allowance for processing of GBTs


Processing of GBTs (flat grinding) is allowed only to the minimum size a (fig. 2.139).
The minimum size a – 139,20 mm.