TM 5-4320-302-146-9. VALVES, VALVE GUIDES, AND VALVE SEATS (CONT)Location/ItemAction RemarksOUTSIDE DIAMETER OF INLETOUTSIDE DIAMETER OF EXHAUSTVALVE SEAT INSERT RINGVALVE SEAT INSERT RINGVALVE SEATinchesinchesINSERT RING(millimeters)(millimeters)Nominal1.7968 to 1.79761.5803 to 1.5811(45.64 to 45.66)(40.14 to 40.16)First oversize1.8008 to 1.80161.5843 to 1.5850(45.74 to 45.76)(40.24 to 40.26)Second oversize1.8047 to 1.80551.5882 to 1.5890(45.84 to 45.86)(40.34 to 40.36)Third oversize1.8087 to 1.80941.5921 to 1.5929(45.94 to 45.96)(40.44 to 40.46)CLEANING/INSPECTION/REPAIRAFTER INSTALLATIONWARNINGSevere burns, illness, or death may result if personnel fail tohandle diesel fuel oil properly. Observe the following precautions:* Do not inhale vapor.* Work in a well-ventilated area.* Do not use near open flame, sparks, or excessive heat.Death or severe injury might result when compressed air is used toblow dirt from skin or clothing. Air entering body openings isextremely dangerous. Compressed air used for cleaning shall notexceed 100 psi (690 kPa). Use goggles or face shield for eyeprotection. Do not direct airstream against skin.13. CylinderAllow head to cool to room temperature, 75°Fhead(23.8°C).6-57
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