TM 5-4310-387-14
5-29. Engine Cylinder Head Assembly (Cont)
b.
Replace. (figure 5-42)
(1)
Remove two nuts (1) and remove valve cover (2), gasket (3), and two preformed packings (4).
Discard preformed packing (4).
(2)
Remove two nuts (5) and washer (6) and remove spring (7).
(3)
Remove nut (8) and screw (9).
(4)
Remove screw (10) and air shield (11).
(5)
Remove screw (12) and air shield (13).
(6)
Loosen two nuts (14) and unscrew adjusters (15) part way.
(7)
Remove four nuts (16), washers (17), and bracket (18) and remove cylinder head (19), gasket (20),
and preformed packing (21). Discard preformed packing (21).
(8)
Remove four studs (22).
(9)
Install four studs (22).
(10)
Ensure all gasket surfaces are clean and free of old gasket material.
(11)
When installing cylinder head (19), ensure pushrods (23) and (24) are properly positioned. The front
pushrod (23) goes to exhaust rocker (25) and back pushrod (24) goes to intake rocker (26).
(12)
Install new preformed packing (21) in cylinder head (19) and install cylinder head (19) and gasket (20)
and secure with four nuts (16), washers (17), and bracket (18). Torque nuts to 25-28 Ib-ft (34-39 Nm).
(13)
Install air shield (13) and secure with screw (12).
(14)
Install air shield (11) and secure with screw (10).
(15)
Install screw (9) and nut (8).
(16)
Install spring (7) and secure with two nuts (5) and washers (6).
(17)
Adjust valves (para. a.).
(18)
Install two new preformed packings (4), new gasket (3), and valve cover (2) and secure with two nuts
(1).
FOLLOW-ON MAINTENANCE
(1)
Install fuel injector (para. 5-27).
(2)
Install muffler (para. 4-27).
(3)
Install air cleaner (para. 4-26).
5-90
