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TM 5-4320-305-24
3-19.
REPLACE CYLINDER HEAD ASSEMBLY, ROCKER ARMS, PUSHRODS, AND TAPPETS (Continued)
4
Press bearing bushing (13) into
rocker arm (4). Make sure oil
hole is alined with rocker arm oil
hole.
5
Install thrust pad (10).
6
Install oil nozzle (12) and nut (11)
in
rocker
arm
(4)
so
that
chamfered edge of oil nozzle
points toward thrust pad (10).
Make sure that one thread turn of
the oil nozzle projects out from
nut when nut has been tightened
securely.
7
Install adjusting screw (9) in
rocker arm (4) with chamfer on
adjusting screw pointing toward
thrust pad (10). Install nut (8) and
tighten securely.
8
Install stud (6) in rocker bracket (7).
9
Install rocker fulcrum (5) and rocker arm (4) on stud (6).
10 Install washer (3), lockwasher (2), and nut (1). Tighten nut securely.
NOTE
Before installing repaired or new cylinder head, piston top
clearance should be measured and checked. Use the following
procedure.
TEST:
NOTE
Make sure piston is below top dead
center (TDC) position. Refer to paragraph
3-6 to determine TDC position.
1
Apply coating of grease to approximately 4.0 inches
(102 mm) of 0.0787 inch (2 mm) lead wire (1) and
mold wire to top of piston (2). Grease will allow wire
to adhere to piston. Trim off wire that overlaps top of
piston.
3-104
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