Ford Thunderbird 1958 User Manual

PART
1-ENGINE
1-39
CENTERLINE OF
ENGINE'
[Al
A-AT
RIGHT
ANGLE
TO
CENTERLINE
OF
ENGINE
B"
PARALLEL
TO
CENTERLINE
OF
ENGINE
|A>r.--
-.,
-JSmmL
4
I.
OUT-OF-ROUND
=
DIFFERENCE
BETWEEN
A
AND
B
2.
TAPER
=
DIFFERENCE BETWEEN
THE
A MEASUREMENT AT
TOP
OF
CYLINDER
BORE AND THE
A MEASUREMENT AT BOTTOM
OF
CYLINDER BORE
1039-A
FIG.
81
Cylinder Bore
Out-of-Round And
Taper
chipped,
or
cracked
teeth.
If the
teeth
are
damaged,
replace the
ring
gear.
With
the
flywheel
installed
on the
crankshaft,
check
the
flywheel
face
runout.
FLYWHEEL FACE RUNOUT
Install a dial
indicator
so that the
indicator point bears against
the
fly
wheel
face
(Fig.
80).
Turn the
fly
wheel
making
sure
that it is full for
ward or rearward so that
crankshaft
end
play
will not
be indicated
as
fly
wheel runout.
If the
runout exceeds
the
maxi
mum
limit,
remove the
flywheel and
check for burrs between the
flywheel
and the face
of the crankshaft
mount
ing
flange. If
no
burrs
exist,
check
the
runout of the crankshaft
mount
ing
flange.
Replace the
flywheel or
machine
the
crankshaft flywheel face
if the
mounting
flange runout is
excessive.
RING
GEAR
REPLACEMENT
Heat the
defective
ring
gear
with
a
blow
torch on the engine side of the
gear,
then
knock it
off
the
flywheel.
Do not
hit the
flywheel when remov
ing
the
ring
gear.
Heat the
new
ring
gear
evenly
un
til
the
gear
expands enough
to
slip
onto
the
flywheel.
Make sure the
gear is
seated
properly
against
the
shoulder.
Do
not
heat
any
portion of
the
gear to
a
temperature
higher
than
500 F.
If
this
limit is
exceeded,
the
temper
will be
removed
from the
ring
gear
teeth.
CONVERTER DRIVE
PLATE
The procedure
for
checking
the
converter drive plate
for cars
with
Cruise-O-Matic
is covered
in
Group
3.
CYLINDER
BLOCK
During
the
disassembly
of the
cyl
inder block for engine
overhaul,
closely
inspect the wear pattern
on
all parts to
help
diagnose the cause
of
wear.
CLEANING
AND INSPECTION
Thoroughly
clean the block in
sol
vent.
Remove old
gasket
material
from
all
machined
surfaces. Remove
all
pipe
plugs which
seal
oil
passages,
then clean out
all
the
passages. Blow
out
all
passages,
bolt
holes,
etc. with
compressed
air. Make
sure the
threads
in the
cylinder head bolt
holes
are
clean.
Dirt in the
threads
may
cause
binding
and result in
a
false
torque
reading. Use a
tap
to
true-up
threads
and to remove
any
deposits.
After
the block has been thor
oughly
cleaned,
make
a
check for
cracks. Minute
cracks
not visible
to
the naked
eye
may
be
detected
by
coating
the suspected area with a
mixture of
25%
kerosene
and
75%
light
motor oil.
Wipe
the
part
dry
and
immediately
apply
a
coating
of
zinc
oxide
dissolved in
wood alcohol.
If
cracks
are
present,
the
coating
will
become discolored at
the
defective
area.
Replace
the
block
if it is
cracked.
Check
all
machined
gasket
sur
faces for
burrs,
nicks,
scratches,
and
scores.
Remove
minor
imperfections
with an
oil
stone.
Check
the
flatness
of
the
cylinder
block
gasket
surface
following
the
procedure
and
specifi
cations
recommended
for
the
cylinder
head
(page
1-30).
Replace
all
expansion-type
plugs
that
show
evidence
of
leakage.
Inspect the
cylinder
walls
for
scor
ing,
roughness,
or
other
signs
of
wear.
Check
the
cylinder
bore
for
out-of-
round
and
taper.
Measure
the
bore
with an
accurate
gauge
following
the
instructions of
the
manufacturer.
Measure the
diameter of
each
cyl
inder bore
at the
top,
middle,
and
bottom with the
gauge
placed
at
right
angles and
parallel to
the
centerlines
of
the
engine
(Fig.
81).
Rebore
cylinders
that are
deeply
scored
and/or when
out-of-round
and/or
taper exceed the
wear
limits.
If the
cylinder walls
have
minor
surface
imperfections,
but the
out-of-
round and
taper
are
within
limits,
it
may
be
possible to remove
the
imper
fections
by honing
the
cylinder
wall
and
installing
new
service piston
rings
providing
the piston clearance is
within limits.
Use
the finest grade of
honing
stone
for
this operation.
REFINISHING CYLINDER
WALLS
Honing
is
recommended
for
re
finishing
cylinder walls
only
when
the walls
have minor
imperfections,
such
as
light
scuffs,
scratches,
etc.
The
grade of
hone to
be used is
deter
mined
by
the amount
of metal
to
be
removed.
Follow
the
instructions
of
the
hone
manufacturer.
If
coarse
stones
are
used
to
start
the
honing
operation,
leave
enough
material
so
that
all
hone
marks
can
be
removed
with
the
finishing
hone
which
is
used
to
obtain
the
proper
piston
clearance.
Cylinder
walls
that
are
severely
marred
and/or
worn
beyond
the
specified
limits
should
be
rebored.
Before
any
cylinder
is
rebored,
all
main
bearing
caps
must
be
in
place
and
tightened
to
the
proper
torque
so
that
the
crankshaft
bearing
bores
will
not
become
distorted
from
the
boring
operation.
Rebore
only
the
cylinder
or
cylin
ders
that
require it.
All
pistons
are
the
same
weight,
both
standard
and
oversize;
therefore,
various
sized
pis
tons
can
be
intermixed
without
up
setting
engine
balance.
Rebore
the
cylinder
with
the
most
wear
first
to
determine
the
maximum
oversize.
If
the
cylinder
will
not
clean

Ford Thunderbird 1958 Specifications

General

Brand	Ford
Model	Thunderbird 1958
Category	Automobile
Language	English