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Part ONE
POWER PLANT
Chapter
II
SKtion
H-Series-6-Cy/inder Engine
Pare
1
2
3
4
5
6
7
8
9
Manifold Replacement
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22
25
26
29
30
31
32
35
38
Cylinder Head Replacement ....
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Oil Pan, Oil Pump,
and
Oil Pressure Relief
Valve
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Crankshaft Damper
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Cylinder Front Cover
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Valves and
Valve Guides .............
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Camshaft Gear,
Camshaft,
and
Bearings
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Flywheel, Crankshaft,
and
Bearings
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Piston
and
Connecting Rod Assemblies
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The material
presented in this chapter covers the
H-Series 6-cylinder
engine illustrated in
figs. 1
and 2.
This
engine
is
a 9S-horsepower
L-hea<:i
engine with a
3.3 inch
cylinder bore
and
a 4.4
inch piston stroke.
The
piston
displacement
is 226 cubic inches.
Complete removal
and installation
information
cov-
ering all of
the
component parts of the engine are
included in this chapter.
Procedures for
disassembly.
cleaning, inspection,
repair,
and assembly of the differ-
ent
units
of this engine are also given here.
General
overhaul
procedures for the
H-Series
engine are given
in the chapter on general engine
repair. The
procedures
and operations described and
illustrated
in
this
chapter
ca
n only be
used for
working on this engine.
Always
install
new
gaskets when any installation is
made where gaskets have been previously
removed. A
com
plete engine overhaul gasket kit illustrated in
fig.
3
is
available for engine overhaul.
1. MANIFOLD REPLACEMENT
A
chamber
is
built into the intake manifold center
section where the carburetor and exhaust manifold are
attached.
An
exhaust
:
ontrol
va lve,
located
in the
exhaust manifold, directs exhaust gases into this
cham-
ber when
the
engine is cold to provide
faster
engine
warm-up.
NOTE:
Do
nol
re
move
manifold.
when hoI.
Th ey
may warp
and make
reassembly difficult.
Replace manifolds that
are warped or
have
devel-
Fig
.
i
-H-Series 6-Cylinder Engine ('I
..
Front ViewJ
22
oped
cracks.
The
exhaust control valve (fig.
4)
may
sti
ck and need
replacement.
Manifold replacement
procedures are covered
under
the headings
liS.
Conventional
Truck,"
"b.
Cab-Over
Engine," and "c. Parcel
Delivery."
1013
Fig. 2-H-Series 6-Cylinder Engine (Sectional View)
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