TM 5-4320-302-14
5-20.
CYLINDER HEAD ASSEMBLY, ROCKER ARMS, PUSHRODS,
AND TAPPETS (CONT)
Location/Item
Action
Remarks
30. Rocker bracket
Install rocker assembly and hex nuts. Tighten
with assembled
hex nuts to 21 ft lb (28 N.m) using torque
rocker arms
gage.
31. Cover
Install cover, new gasket, hex bolt, and washers
Install new gasket.
after valve clearance adjustment.
ADJUSTMENT
NOTE
Adjust valve clearance only when engine is cold.
32. Flywheel or
Rotate crankshaft by rotating flywheel or V-belt
V-belt pulley
pulley clockwise until valve stems and rocker arms
overlap. The exhaust valve should be closing and its
valve stem rising. The inlet valve should be opening
and its valve stem going down. Both valve stems
should be at the same height. Rotate crankshaft
another complete revolution, or 360 degrees of
travel of the flywheel or pulley. The piston should
be at the top of its compression stroke and the
valve clearance can be checked and adjusted.
5-90