Section III. CYLINDER HEAD, VALVES, FLYWHEEL, AND FLYWHEEL HOUSING

Section III. CYLINDER HEAD, VALVES, FLYWHEEL, AND

FLYWHEEL H O U S I N G

( 6 ) Disconnect and remove the fuel rod

between the governor and the injector control tube

those items that are Considered components of the

( 7 ) Remove the exhaust manifold (TM 10-

engine. These items consist of various parts which

3930-243-121).

make up the basic engine.

( 8 ) Remove the injector control tube and

3-19. Cylinder Head and Valves

bracket as an assembly (para 3-13).

a. General. The cylinder head is a one piece

( 9 ) If cylinder head is to be stripped for

casting. It may be removed as an assembly con-

reconditioning of valves and valve seats or for a

taining cam followers, cam follower guides, rocker

c o m p l e t e cylinder overhaul, the fuel lines and

arms, exhaust valves and injectors. The head is

injectors should be removed at this time (para 3-

securely held to the top of the cylinder block with

14).

bolts.

(10) Remove cylinder head bolts and lift the

b. Removal.

cylinder head off the cylinder block.

(1) Disconnect the exhaust piping at the

CAUTION

exhaust manifold (TM 10-3930-243-12).

When resting the cylinder head

(2) Drain the cooling system (TM 10-3930-

a s s e m b l y on a bench, protect the cam

243-12).

follower and the injector spray tip by

(3) Disconnect fuel lines at cylinder head.

r e s t i n g the valve side of the head on

(4) Remove the thermostat housing and

w o o d e n blocks at least 2 inches thick.

thermostat as an assembly (TM 10-3930-243-12).

(11) Remove the cylinder head compression

(5) Remove the valve rocker cover (TM 10-

gaskets, oil seals, and water seals and discard.

3930-243-12).