TM 5-4310-379-14
4-21. Valve Operating Mechanism (Cont).
(13)
Install four cylinder head bolts (12) and draw cylinder head (13) down slightly.
(14)
Remove two studs and install remaining two cylinder head bolts (12).
(15)
Torque bolts (12), in the sequence shown, 1/2 turn at a time until all bolts are torqued to 170-180 Ib-ft (231-
244 Nm).
(16)
Install temperature sensor (9) and tighten fitting nut (8)
NOTE
Leave 1 1/2 threads exposed when applying teflon tape. Wrap teflon tape in the direction that will not
unwrap as fitting is tightened. Failure to wrap teflon tape properly or having it extend past the end of the
fitting may cause a blockage in the fuel system.
(17)
Apply teflon tape to threads on fitting nut (10).
(18)
Install fuel line (11) and tighten fitting nut (10).
(19)
Lubricate the outside diameter, lower end, and inside seating surface of push rod seats (6).
(20)
Install valve operating mechanism (5) and install two bolts (2) and lockwashers (3). Torque bolts to 30-35
Ib-ft (41-47 Nm).
(21)
Thread bolts (4) into cylinder head (13) and torque bolts to 90-100 Ib-ft (122-136 Nm).
(22)
Repeat steps 8 through 20 for remaining valve operating mechanism.
(23)
Adjust valve operating mechanism. See para. a. above.
FOLLOW-ON MAINTENANCE
(1) Install rocker cover (para. 3-39).
(2) Install blower assembly (para. 4-13).
(3) Install fuel manifold supply line (para. 3-24).
(4) Install thermostat and housing assembly (para. 3-21).
(5) Install exhaust manifold (para. 3-15).
(6) Install fuel manifold connections (para. 4-8).
Change 1
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