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1-2
1·
GENERAL ENGINE SERVICE
Seello..
"q'~
Engine
Trouble
Diagnosis
1·2
2
Tune-up
1-5
3 Manifolds, Cylinder
Heads,
and
Valves
....... ... ...
1-7
The following
service procedures
apply
to
all engines.
The
cleaning,
inspection, repair,
and overhaul
pro-
cedures
or
the
component
engine
parts apply after
the
parts
have been
Sftllon
Pqe
4
Timing
Chain.
Timing
Gears, Camshaft,
and
Bearings
...
. ........ ......
1-
12
5
Aywheel, Crankshaft,
Connecting
Rods,
Pislon
Asse mblies, and
Bearings
,..
1-
14
removed
from
the
engine,
or in the
case of a complete engine overhaul,
after
the
engine has been
disas·
sembled.
For
removal, disassembly, and
D
ENGINE
TROUBLE DIAGNOSIS
Poor
engine
perfqrmance can be
caused
by the
need
for a
general
engine
tune-up,
by
gradual wear of
engine parts
or
by a sudden parts
failure
.
A
good
trouble
diagnosis
will
indicate
the
need of a complete
engine
tune-up, individual
adjust-
ments, partes)
replacement
or
over-
haul,
or
the need of
a
complete
engine
overhaul.
Engine performance complaints
usually fall under
o ne
of the basic
headings listed in the
"Engine
Trou-
ble
Diagnosis Guide."
In
addition,
the "Engine
Trouble
Diagnosis
Guide"
lists
procedures
and
checks
to be performed
to help
isolate the
cause of
the
trouble
in
a
particular system.
The
reference after
each
check refers to that
part
of
the
manual which covers,
in detail, check-
ing
procedures
as
well
as
corrections
to be made in the various systems.
When
a
particular
trouble
can
not
be traced to
a
definite system by a
si
mple
check,
the possible systems
that
cou
ld
be at fault are listed in
the
order
of
their
probable
occurrence;
therefore, in most cases,
the
checks
should
be made in the
order
listed.
Some consideration,
however,
should
be
given to
logical
order. For
ex-
ample, if
the spark plugs
are
removed
for
testing
and they
are not the
cause
of
the
trouble, and several
checks
later
calls
for
a
compression
test, to
save
time,
check the
compression
whi le
the
spark
plugs
are out.
Section
P.re
6
Cylinder
Block
1-
18
7
Oil
Pan,
Oil Pump, and
Oil
Cooler
.......
1-19
The V-8 enginu will be
referred
10
a.r follows: medium duty
engine
(292 cubic
inch displacement) as
MD
V-8;
heavy duty
engines
(292,
302,
and
332
cubic
inch displace-
ment) as
HD
V-8;
and super
dUlY
engines (401. 477,
and
534
cubic
inch tlisplacement) as SD V-8.
installation procedures,
refer
to Part
].2,
1·3, or 1·4.
The
specifications
for
all
engines
arc listed in
Part
1-5.
A
separate '''Trouble
Diagnosis
Guide"
is included
in
the
ignition,
fue
l,
ilnd cooling
system
parts of the
manual. These diagnosis guides
list
the basic troubles listed in the
"En-
gine
Trouble
Diagnosis
Guide",
but
cover
only
the items relating to the
particular system under considera-
tion.
For
example,
in the
"Engi ne
Trouble
Diagnosis
Gu ide"
under
Poor
Acceleration,
the
ignition
sys-
tem
is
listed
as a probable cause of
the
trouble.
In
the
Ignition
Trouble
Diagnosis
Guide under Poor Accel-
eration.
all the ignition
system
items
thai
affect acceleration
are listed.
These
items
should
al1
be checked be
fore proceeding
to
the
next item
!islet.
in
the
"
Engine
Trouble
Diagnosis
Guide."
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