Table 5-2. Engine Repair and Replacements Limits (cont). Measurements Item Minimum Maximum VALVE SEAT INSERTS Exhaust  and  intake Outside diameter 0.867 0.877 (2.2021) (2.2275) Inside  diameter 0.745 0.750 (1.8923) (1.905) Seat  angle 44° 45’ 45° 0. Rocker  arms Rocker arm i.d. 0.6245 0.6255 (1.5862) (1.5887) Rocker shaft o.d. 0.4375 0.4380 (1.1112) (1.1125) Rocker  arm  bearing  i.d.  in  rocker  arm 0.4380 0.4383 (1.1125) (1.1132) ARMY TM 9-2805-256-14 AIR FORCE TO 38G2-102-2 NAVY NAVFAC P-8-611-14E