GRINDING KIT, VALVE SEAT, ELECTRIC, NO. 6335 …
(BLACK AND DECKER MFG. CO.) HEADQUARTERS, DEPARTMENT OF THE ARMY 31 OCTOBER 1980. TM 9-4910-590-14&P ... grinding and reduces stone wear. All grinding is concentric, cutting the entire ... sleeve stationary and prevent-ing friction and wear between sleeve and pilot stem. These
