Ford Thunderbird 1958 User Manual

1-30
GROUP
1-POWER
PLANT
OIL
PUMP
DISASSEMBLY
1.
Remove
the
oil
inlet
tube
from
the
oil
pump
and
remove
the
gasket.
2.
Remove
the
cover
retaining
screws, then
remove
the
cover.
Re
move
the
inner
rotor
and
shaft
as
sembly,
then
remove
the
outer
race.
3.
Insert
a
self
threading
sheet
metal
screw
of
the
proper
diameter
into the oil pressure relief
valve
cham
ber
cap
and
pull
the
cap
out of
the
chamber.
Remove
the
spring
and
plunger.
ASSEMBLY
The oil
pump
assembly
is
shown
in
Fig.
59.
1.
Oil all parts
thoroughly.
Install
the
oil
pressure relief
valve
plunger,
spring,
and
new
cap.
2. Install
the
outer
race,
and
the
inner
rotor and
shaft
assembly. The
inner
rotor
and
shaft,
and the
outer
race
are
serviced
as an assembly.
One
part
should not be replaced
without
replacing
the other. Install
the
cover
and
tighten the
cover
retaining
screws
to
6-9 foot-pounds
torque.
Position
a
new
gasket and
the
oil inlet
tube
on the
oil
pump
and
install
the
retaining
bolts.
CLEANING,
INSPECTION,
AND
RECONDITIONING
INTAKE
MANIFOLD
Clean
the
manifolds
in
a
suitable
solvent,
then
dry
them with
compres
sed air.
Scrape all
carbon
deposits
from
the
center
exhaust
passage
be
low
the
carburetor
heat riser.
This
carbon acts
as
an
insulator
restricting
the
heating
action
of
the
hot
exhaust
gases.
Inspect
the
manifold for
cracks,
leaks,
or
other
defects
that
would
make
it
unfit
for
further
service.
Re
place all
studs
that
are
stripped
or
otherwise
damaged.
Remove all
fi
lings
and
foreign
matter
that
may
have
entered the
manifold as a
result
of
repairs.
Check
the baffle
plate
on the
under
side
of the
manifold
for
looseness.
EXHAUST
MANIFOLD
AND
EXHAUST GAS
CONTROL
VALVE
Clean out the
automatic
choke air
heat
chamber of the
right
exhaust
manifold
(Fig. 60).
Make
sure the
air
inlet
and outlet holes
are
com
pletely
open.
Blow
out
the
automatic
choke
air heat
tube with
compressed
air.
Check the thermostatic
spring
of
the
exhaust
gas
control
valve
to
make
sure
it is
hooked on
the
stop
pin.
The
spring
stop
is at the
top
of
the valve
housing
when
the
valve
is
properly
installed.
The
action of the
valve
is
illustrated
in
Fig. 4.
To
check the
exhaust gas
control
valve
on the
car,
make
sure the
spring
holds
the valve
closed when the en
gine
is
cold.
Actuate
the counter
weight
by
hand to make sure it moves
freely
through
approximately
90
of
rotation
without
binding.
The valve
is
closed
when
the en
gine
is
at
normal
operating
tempera
ture and
running
at
idle speed. How
ever,
a
properly
operating
valve will
open
when
very
light
finger
pressure
is
applied to the
counterweight.
Ra
pidly
accelerate
the
engine to make
sure
the
valve
momentarily
opens.
The
valve is
designed
to
open
when
the
engine is
at
normal
operating
temperature
and is
operated at
high
rpm.
Free
stuck
valves
with a
pene
trating
oil
and
graphite
mixture.
VALVE
ROCKER
ARM
SHAFT
ASSEMBLY
Clean all
the parts
thoroughly.
Make
sure that all
oil
passages
are
open.
Check
the
clearance
between each
rocker
arm
and
the shaft
by
checking
the
I.D. of
the rocker
arm
bore
and
the O.D.
of
the shaft.
If
the
clearance
between
any
rocker
arm
and
the
shaft
exceeds
the wear
limit,
replace
the shaft
and/or
the
rocker arm.
In
spect
the
shaft
and
the
rocker
arm
bore for
nicks,
scratches,
scores,
or
scuffs.
Dress
up
minor
surface de
fects
with a
hone.
Inspect
the pad
at
the
valve
end of
the rocker arms
for a
grooved
radius.
If
the pad is
grooved,
replace the
rocker arm.
Do
not
attempt
to
true
this
surface
by
grinding.
PUSH
RODS
Check
the ends
of
the
push rods
for
nicks,
grooves,
roughness,
or
ex
cessive wear.
The push
rods
can be
visually
checked for
straightness while
they
are
installed in
the
engine
by
rotating
them with
the
valve closed.
They
also
can
be
checked
with a dial indicator.
(Fig. 61).
If
the
runout exceeds the
maximum
limit at
any
point,
discard
the
rod.
Do
not
attempt to straighten
push
rods.
CYLINDER
HEADS
CLEANING AND
INSPECTION
Clean the
valve
guide
bores
with a
valve
guide
cleaning
tool. Use
clean
ing
solvent
to
remove
old gasket
sealer, dirt,
and grease.
Check
the cylinder
head
for
cracks,
and the
gasket
surface
for
burrs
and
nicks. Replace the
head
if
it
is
crack
ed. Do
not
plane
or
grind
more
than
0.010
inch
from the
cylinder
head
gasket
surface.
Remove
all burrs
or
scratches
with
an oil
stone.
CYLINDER
HEAD
FLATNESS
Check the
flatness
of
the
cylinder
head
gasket
surface (Fig.
62).
Specifi
cations
for
flatness
are
0.006
inch
maximum
overall,
or
0.003
inch
in
any
6
inches.
VALVE SEAT
RUNOUT
Check
the
valve seat
runout
with
an
accurate
gauge
(Fig. 63).
Follow
the
instructions
of the
gauge
manu
facturer.
The
total
runout
should
not
exceed the wear
limit.
VALVE SEAT
WIDTH
Measure the
valve
seat
width
(Fig.
64).
The intake
valve
seat
width
limits
are
0.060-0.080
inch
and
the
exhaust
valve seat width
limits
are
0.070-0.090
inch.

Ford Thunderbird 1958 Specifications

General

Brand	Ford
Model	Thunderbird 1958
Category	Automobile
Language	English