TM-9-2815-205-24 Technical Manual for M113 Engine 6V53 6V53T Download
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REPAIR OR REPLACEMENT - Continued NOTE Exhaust valve seats are prefinished. Check for concentricity after installation. Grind valve seats only if runout exceeds 0.002 inch (0.05 mm). 5. Valve seat grinding procedures are as follows: Using valve seat grinder and valve seat grinder adapter kit, grind valve seats as follows: CAUTION Do not permit grinding wheel to contact cylinder head when grinding valve seat. If valve seat is ground until grinding wheel contacts cylinder head, then install new valve seat. (1) Apply 31 degree grinding wheel on valve seat. (2) Grind throat of valve seat using 60 degree grinding wheel (Figure 12). MAINT_259 Figure 12. Cylinder Head Valve Seat Grinding. TM 9-2815-205-24 0083 0083-15