ARMY   TM9-2805-262-14 AIR  FORCE  TO  38G2-90-1 NAVY   NAVFAC   P-8-613-14E Table  5-2.  Engine  Repair  and  Rleplacements  Limits  (cont). Measurements Item Maximum* Minimum* Intake: Inside  diameter 0.8150 0.8050 (2.0701) (2.0447) Seat  angle 45°0’ 44°45’ VALVE  TAPPETS Outside diameter 0.4974 0.4970 (1.2634) (1.2624) Clearance  in  guide 0.0025 0.0005 (0.0063) (0.0013) Tappet  guide  I.D. 0.4995 0.4984 (1.2687) (1.2659) ROCKER ARMS Rocker  shaft  O.D. 0.4375 0.4370 (1.1112) (1.1100) Bearing  I.D. 0.4390 0.4380 (1.1151) (1.1125) Wear  plate  thickness 0.0350 0.0330 (0.0889) (0.0738) ROTATING MAGNET Pole  shoe  clearance 0.0160 0.0020 (0.0406) (0.0051) 5-58