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2.20. Check and adjustment of valvate gaps


19.1 Yokes of engines on which it is not necessary to carry out adjustment of gaps of the valvate mechanism look as follows (are specified by shooters) - on them there are no adjusting screws


1. Valvate gaps need to be regulated through certain periods when the engine is heated-up up to the normal working temperature. On some models valvate gaps are not subject to adjustment. These models on valves have no adjusting screws (19.1).
2. Remove the air filter and a cover of the valvate mechanism.
3. Install the N1 cylinder piston in the provision of VMT at the time of a compression step. In this provision of a yoke of the first cylinder have to move freely.

19.4 When the piston of the N1 cylinder is in the provision of VMT, adjust gaps of the valves marked with a letter A - when the piston of the N4 cylinder is in VMT, adjust gaps of the valves marked with a letter B


4. In this position of the valve, marked with a letter A (and injecting the valve, located near inlet valves) it is possible to check and adjust. Always the first check and regulate gaps of the injecting valves (19.4).
5. Adjusting screws of the inlet and injecting valves are located on yokes. Turn off the adjusting screw of the inlet valve on two whole revolutions, then turn off a lock-nut on the adjusting screw of the injecting valve.

19.6 At extraction of the probe from a gap between the valve and the adjusting screw easy resistance has to be felt


6. Insert the probe between a rod of the injecting valve and the adjusting screw and accurately twirl the screw so that the probe was slightly pressed by the screw to the valve (19.6).
7.  As a spring of the injecting valve rather weak,   be accurate  not to open the valve.      

19.8 In order that the adjusting screw did not rotate when twisting a lock-nut hold it by means of a wrench


8. Then check and adjust gaps of inlet valves, and after them gaps of final valves (19.8).
9. Install the N4 cylinder piston in the provision of VMT at the time of a step of compression and adjust gaps of the valves marked with a letter B (19.4).
10. Upon completion of adjustment establish a cover of the valvate mechanism and the air filter into place.