TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 Table 1-2.  Repair and Replacement Standards - Continued NEW MINIMUM NEW MAXIMUM PART OR LOCATION WORN LIMIT INCH (mm) INCH (mm) Valve Crossheads (Cont.) Crosshead to spring 0.025 retainer clearance (0.64) Valves, Guides and Springs Valve stem outside 0.449 0.450   0.451 diameter 11.40) (11.43) (11.46) Valve guide inside   0.4545 0.4525   0.4532 diameter 11.544) (11.494) (11.511) Valve guide height   1.315   1.325 (33.40) (33.65) Head height 5.460 5.490 5.510 (138.68) (139.45) (139.95) Runout 0.002 (0.05) Gear Cover Fuel pump drive bushing 1.5705 1.565 1.569 (39.891) (39.75) (39.85) Generator drive bushing 1.3205 1.316 1.319 (33.541) (33.43) (33.50) Camshaft support 1.757 1.751 1.754 (44.63) (44.48) (44.55) Rear Cover Piston ring type 8.504 8.500 8.502 (216.00) (215.90) (215.95) VALVE SEAT INSERT SPECIFICATION - INCH (mm) INSERT OVERSIZE INSERT CYLINDER HEAD INSERT PART NO. CUTTER DIAMETER DEPTH OD ID THICKNESS 127930 ST-662 Std. 2.0025/2.0035 1.9995/2.005 0.278/0.282 Std. (50.864/50.889) (50.787/50.813) (7.06/7.16) 127935 ST-662 0.005 2.0075/2.0085 2.0045/2.0055 0.278/0.282 (0.13) Std. (50.991/51.016) (50.914/50.940) (7.06/7.16) 127931 ST-662-1 0.010 2.0125/2.0135 2.0095/2.0105 0.278/0.282 (0.25) Std. (51.118/51.143) (51.041/51.067) (7.06/7.16) 127932 ST-662-2 0.020 0.005 2.0225/2.0235 2.0195/2.0205 0.283/0.287 (0.51) (0.1270) (51.372/51.397) (51.295/51.321) (7.06/7.29) 127933 ST-662-3 0.030 0.010 2.0325/2.0335 2.0295/2.0305 0.288/0.292 (0.76) (0.2540) (51.626/51.651) (51.549/51.575) (7.32/7.42) 127934 ST-662-4 0.040 0.015 2.0425/2.0435 2.0395/2.0405 0.293/0.297 (1.02) (0.3810) (51.880/51.905) (51.803/51.829) (7.44/7.54) CAUTION Be sure to measure insert before machining head or installing insert in head. 1-11