ARMY TM 9-2815-254-24
AIR FORCE TO 38G1-94-2
(2) If measured value is less than limit, replace valve and valve stem as a set.
(3) Intake valve stem standard OD is 0.3129 to 0.3134 in. (7.949 to 7.961 mm), with a limit of 0.3102 in. (7.88
mm). Exhaust valve stem standard OD is 0.3118 to 0.3124 in. (7.921 to 7.936 mm), with a limit of 0.3090
in. (7.85 mm)
Check valve thickness, refer to FIGURE 3-68. Standard measurement is 0.05 in. (1.3 mm), with a limit of 0.04
in. (1.0 mm). If measured value is less than limit, replace valve and valve guide as a set.
FIGURE 3-68. Checking Valve Thickness
Check valve depression as follows:
(1) Install valve in cylinder head, refer to FIGURE 3-69.
FIGURE 3-69. Valve Depression