TM 5-3895-370-14&P(15)Check valve stem tip for flatness. Resurface tipif required.(16)Install each valve in cylinder block matchingmarks made in disassembly.(17)Measure and record valve depth at position J.Normal measurement is between 0.039 to 0.060in. (0.991 1.524 mm). If measurement is belownormal, grind valve seat. If measurement isabove normal, replace valve.(18)Check valve seats in cylinder head for bums,scratches and other damage. If surface isdamaged, grind valve seats.(19)If valves were ground, repeat steps (11 and 12) to ensure consistent measurement of valve seats.(20)If valves were ground, measure valve depth again at position J. Calculate grinding depth by subtracting presentmeasurement by the first measurement. Grinding depth should be no greater than 0.010 in. (0.254 mm). Ifgreater, replace with service valve seat.(21)Mark cylinder head to identify ground valve seats.(22)Install each valve in cylinder block in accordance with matching marks made in disassembly.(23)Repeat step (17) to ensure proper valve depth.(24)Apply lapping compound to each valve and valve seat. Wipe lapping compound from valve and valve seat withlint-free cloth.(25)Measure valve seat width at position K Normalmeasurement is between 0.060 to 0.080 in.(1.524 2.032 mm). If measurement is belownormal, grind valve seat as required. Ifmeasurement is above normal, replace valveseat with service valve seat.5-265
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