4.17. Recommendations about service of valves
In view of complexity of a kind of work and necessity of application of the special equipment, performance of service of valves, their directing plugs and saddles will charge most correctly to the car-care centre personnel.
Own forces of the owner of the car such procedures, as head dismantling, primary cleaning and check of a condition of components клапанного the mechanism can be made. Then it is necessary to collect and deliver a head for professional service in a car-care centre workshop. Thus enough fair idea about volume of works subject to performance is usually made and the approximate list of necessary replaceable components can be prepared.
Experts of a workshop will remove from a head valves and клапанные springs and will make necessary regenerative repair or replacement of the worn out components (valves, their saddles, directing plugs, springs, plates of springs and crackers of cutting locks). Replacement маслоотражательных caps is without fail made. After assemblage of components the adjusting height клапанных springs will be checked up. In case of need experts will make проточку heads for the purpose of restoration of planeness of its interfaced surface.
After end of professional repair of a head its condition usually corresponds to a condition of the new. Before installation on the engine be not too lazy to clean carefully once again a head, completely having removed from all its cavities and channels metal sawdust, traces of an abrasive and other small industrial dust. All channels and apertures blow compressed air (do not forget to put on goggles).