4.17. Recommendations about service of valves
In view of complexity of kind of work and need of use of the special equipment, performance of service of valves, the directing plugs and saddles it will be most correct to charge them to personnel of car service.
Such procedures as dismantling of a head, primary cleaning and check of a condition of components of the valvate mechanism can be made by own forces of the owner of the car. Then it is necessary to collect and deliver a head for professional service in a workshop of car service. At the same time rather fair idea of the volume of subjects to performance of work usually is formed and the approximate list of necessary replaceable components can be prepared.
Experts of a workshop will remove valves and valvate springs from a head and will make necessary recovery repair or replacement of worn-out components (valves, their saddles, the directing plugs, springs, plates of springs and crackers of cutting locks). Replacement of maslootrazhatelny caps is without fail made. After assembly of components the adjusting height of valvate springs will be checked. In case of need experts will make a head pro-point for the purpose of restoration of planeness of its interfaced surface.
After completion of professional repair of a head its state usually corresponds to a condition of new. Before installation on the engine be not too lazy to clean once again carefully a head, having completely removed metal sawdust, traces of an abrasive and other small production garbage from all her cavities and channels. Blow all channels and openings compressed air (do not forget to put on goggles).