ARMY TM 9-2805-256-14 AIR FORCE TO 38G2-102-2 NAVY NAVFAC P-8-611-14E Table 5-2. Engine Repair and Replacements Limits (cont). Item Piston rings Width:  spacer Top Second Third Thickness: spacer Top Second Third Gap  clearance  spacer Top Second Third Side  clearance First Second Third VALVES Exhaust and intake Length to gage point Stem  diameter Measurements Minimum 0.0235 (0.0596) 0.0930 (0.2362) 0.0930 (0.2362) 0.1860 (0.4724) 0.111 (0.2819) 0.094 (0.2387) 0.094 (0.2387) 0.094 (0.2387) 0.0005 (0.0012) 0.007 (0.0177) 0.007 (0.0177) 0.007 (0.0177) 0.0020 (0.00500 0.0015 (0.0038) 0.0010 (0.0025) 2.7885 (7.0827) 0.3100 (0.7874) Maximum 0.245 (0.0622) 0.0940 (0.2387) 0.0940 (0.2387) 0.1870 (0.4749) 0.115 (0.2921) 0.104 (0.2641) 0.104 (0.2641) 0.104 (0.2641) 0.0350 (0.0889) 0.017 (0.0451) 0.017 (0.0431) 0.017 (0.0431) 0.0050 (0.0127) 0.0035 (0.0088) 0.0030 (0.0076) 2.7935 (7.0954) 0.3105 (0.7886) 5 - 5 7