2.3.20. Repair of the valvate mechanism

Fig. 2.156. Components of the valvate mechanism: 1 – bolt of 50 N · m +180 °; 2 – driving asterisk of the camshaft; 3 – sealing cuff; 4 – head of the block of cylinders; 5 – the directing valve plug; 6 – oil scraper cap; 7 – valve spring; 8 – plate of a valve spring, top; 9 – conic crackers; 10 – hydrocompensator; 11 – prismatic spline; 12 – final cam-shaft; 13 – cam-shaft frame; 14 – bolt of 8 N · m + 90 °; 15 – phase shifter; 16 – bolt of 20 N · m +45 °; 17 – inlet cam-shaft; 18 – natyazhitel of a chain; 19 – drive chain; 20 – bolt of 10 N · m; 21 – bolt of 10 N · m; 22 – phase sensor; 23 – final valve; 24 – inlet valve; 25 – cover

NOTE The head of the block of cylinders and frame of cam-shafts is allowed to be replaced only together.

After installation of cam-shafts the engine it have to is impossible to bring Gidrokompensatora within about 30 min. to be besieged (otherwise valves will adjoin to pistons).

After works on the valvate mechanism scroll the engine by hand not less than two turns to be convinced that any valve does not adjoin to the piston.

Consolidations and manzhetny consolidations need to be replaced.

Fig. 2.157. Valve sizes

NOTE It is forbidden to process inlet and final valves. Only grinding in (fig. 2.157) is allowed.