TM 5-4310-386-14
(13)
Slip new valve seat ring, chamfered side first on drive and seat it. (Use drift for inlet valve ring and drive
for exhaust valve ring.)
(14)
Check clearance between valve stems and guides of both valves. Inlet valve clearance should be .00157
to .00590 inches (0.04 to 0.15 mm) and exhaust valve clearance should be .00236 to .00787 inches (0.06
to 0.2 mm).
(15)
If measurements exceed maximum tolerance, replace valve guides.
(16)
Heat cylinder head uniformly in heating cabinet or oven to a temperature of 428°F (220°C).
(17)
Drive out valve guide (5), from the seating ring side, using arbor.
(18)
Install snap ring on new valve guide (5).
(19)
With cylinder head heated to 428°F (220°C) drive in valve guide (5) from rocker arm support side, the
longer end of the valve guide until it seats on the snap ring.
(20)
Allow cylinder head to cool, then ream the valve guide with reamer.
FOLLOW-ON MAINTENANCE
(1)
Install intake manifold (para. 4-38).
(2)
Install muffler and silencer (para. 4-39).
(3)
Install cooling air ducting (para. 4-42).
(4)
Install valves (para. 5-41).
(5)
Install rocker arms and push rods (para. 5-38).
(6)
Install fuel injectors (para. 5-31).
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