TM 5-6115-465-12
TO 35C2-3-446-1
NAVFAC P-8-625-12
TM 06858B/06859D-12
ORGANIZATIONAL MAINTENANCE OF THE ENGINE ASSEMBLY
Section XIV.
EXHAUST MANIFOLD.
GENERAL.
a.
Removal.
Rotational power for driving the generztor is
developed by a water cooled, six cylinder, four cycle,
(1) Refer to paragraph 3-102 and remove the
compression ignition diesel engine. Organizational
muff ler.
maintenance of the engine assembly is limited to in-
specting the crankshaft pulley, inspecting and replac-
(2) Remove nuts and washers (figure 3-35)
to remove exhaust manifold and gaskets. Discard
rocker arm assembly, adjusting the valve tappet
gaskets.
clearance, and testing the engine assembly.
b.
Cleaning and Inspection.
CRANKSHAFT PULLEY.
(1) Clean exhaust manifold with a stiff bristle
a. GENERAL. The crankshaft pulley is mount-
brush and an approved solvent.
ed on the front end of the engine crankshaft and pulls
the drive belt for the water pump, radiator cooling
(2) Scrape all gasket remains from mating
fan, and alternator.
surfaces of exhaust manifold and cylinder.
b.
Inspection.
(3) Inspect exhaust manifold for cracks, ex-
cessive corrosion and other damage.
(1) Inspect v-belt groove for "step''wear along
side and bottom of groove which would indicate ex-
(4) Check all threaded parts for stripped or
cessive wear.
otherwise damaged threads.
(2) Check for cracks in v-belt groove and
c. Installation. Use new gaskets and install
around crankshaft hub.
exhaust manifold in reverse order of removal pro-
cedures. Torque nuts to 35 lbs-ft.
INTAKE MANIFOLD.
a.
Removal.
ROCKER ARM ASSEMBLY.
a. Remove air cleaner assembly (paragraph
(1) Refer to paragraph 3-101 and remove air
cleaner assembly.
(2) Remove nuts and lockwashers (figure
b. Thoroughly clean the valve cover and sur -
rounding area.
card gaskets.
c. Remove capscrews and washers to remove
valve cover and gasket. Discard gasket.
b.
Cleaning and Inspection.
d. Inspect valve rocker arm assembly as
(1) Clean intake manifold with a stiff bristle
follows (figure 3-36).
brush and an approved solvent.
(1) Check adjusting screw, rocker arms, and
(2) Scrape all gasket remains from the mating
shaft for cracks and indications of excessive wear.
surfaces of intake manifold and cylinder head.
(2) Inspect springs for distortion, cracks, and
(3) Inspect intake manifold for cracks, exces-
breaks.
sive corrosion and other damage.
(3) Check the oil hole in each rocker arm for
(4) Check all threaded parts for stripped or
plugging. Use a small wire and compressed air to
otherwise damaged threads.
clean plugged oil holes.
c. Installation. Install intake manifold in re -
e. If damage or excessive wear of the rocker arm
verse order of removal procedures. Torque nuts to
35 lbs-ft.
assembly is present, notify higher level maintenance.
