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TM 5-4320-306-24
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 00787 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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