TM 9-6115-604-34
NAVFAC P-8-633-34
CAUTION
Take care that grommets are not dislodged during cylinder head installation.
NOTE
Cylinder head weight is approximately 63 pounds (28 kg). Two persons may be required to lift
cylinder heads.
c.
Position the cylinder head over the cylinder, align the dowel pins, and lower the cylinder head into position.
d.
Coat the washers (12) and threads of the cylinder head capscrews (11) with anti-seize compound MIL-A-907, and
install through the cylinder head (7).
e.
Using the sequence shown in Figure 9-12, run each capscrew down until the washer is in contact with the
cylinder head and capscrew. Be sure each capscrew turns freely during run-down.
f.
Tighten the cylinder head capscrews (11, Figure 9-1) in sequence and in four stages in accordance with Figure 9-
12.
g.
Coat new packings (23, Figure 9-2) with petrolatum W-P-236, install them in the water transfer tubes (22), and
install the tubes in the rocker arm housings (20) so that the retaining ring groove will face toward the rear of the
engine for the right bank and toward the front of the engine for the left bank Push the tubes far enough into the
housing to allow room for the installation of the next housing (20) on the next cylinder head.
h.
Using a new gasket (21), install the rocker arm housing (20), five washers (19), and capscrews (18), capscrew
(29), and washer (10). Do not tighten the capscrews fully at this time.
i.
Repeat steps a through h, above, for each cylinder head to be installed.
j.
Using driver ST-1 319, drive the water transfer tubes (22) into the rocker arm housings (20), and install the
retainers (17).
k. Starting at the center of the rocker arm housing (20) cross-tighten the capscrews (1 8) in three stages to a final
torque of 60 to 70 pound-feet (81 to 95 newton-meters).
l.
Install the push rods in the same holes from which they were removed.
m.
Install the fuel injectors in accordance with paragraph 6-18.
n.
Install the rocker arms and crossheads as follows: (1) Install adjusting screws (10, Figure 9-1) and locknuts (9) in
the valve crossheads (8).
(2)
Install the crossheads (8) on the same crosshead guides (24) from which they were removed, and adjust
the valve crossheads in accordance with the Operator and Organizational Maintenance Manual.
(3)
Install adjusting screws (16, Figure 9-2) in the exhaust rocker arms (12), injector rocker arm (13), and
intake rocker arm (14). Install locknuts (15) on the adjusting screws. Do not tighten the locknuts at this
time.
(4)
Install the rocker arms (12, 13, and 14) on the rocker arm shaft (11), so that the counterbore in the shaft
will fit over the ring dowel (24) in the rocker arm housing (20).
(5)
Tilt the rocker arms so that the ball-ends of the adjusting screws (16) enter the push rod sockets, and install
the assembly so that the counterbore in the shaft (11) fits over the ring dowel (24).
(6)
Check to be certain that the ball-ends of the adjusting screws (16) remain in the push rod sockets; adjust
the screws (1 6), if necessary, to keep the ball-ends in the sockets.
(7)
Using washers (10), install capscrews (8 and 9) through the shaft (11) into the rocker arm housing (20).
(8)
Cross-tighten capscrews (8 and 9) in three stages to a final torque of 60 to 70 pound-feet (81 to 95 newton-
meters).
(9)
Adjust the injector travel and rocker arm clearance in accordance with the Operator and Organizational
Maintenance Manual.
(10)
Using a new gasket (7), install the rocker arm cover (6) with plain washers (2), capscrew and lockwasher
(1), two lockwashers (4), two plain washers (5), and hexagon head capscrews (3).
(11)
Cross-tighten the capscrews and lockwashers (1) and hexagon head screws (3) in three stages to a final
torque of 30 to 35 pound-feet (41 to 47 newton-meters).
o.
Install the fuel manifolds in accordance with paragraph 6-26.
p.
Install the intake manifolds in accordance with paragraph 943.
9-20
