OCR Text |
Show --: Shorted for Valve Grinding Outlined la cases where a badly pitted valve requires regrinding, here i is a shortcut. Cut a piece of emery cloth In dimensions a little bit wider than the valve seating and twice as long and then double it over so that both surfaces are cutting surfaces, jjj Next cut a hole in the cloth so i that the valve stem may be J passed through and the emery ;i. cloth brought close up against the valve head. The valve Is then placed in position for grinding under comparatively high pressure. Both sides of the emery cloth will conform to the valve head and the seat- sic " Ing cloth and If the valve turns and the emery cloth remains stationary, the valve will be ground on the upper emery, whereas if the cloth revolves, the valve seating will be ground .j. on the lower emery. |