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Buick 40 Series 1948 Shop Manual page 238

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(235)
STEERING GEAR AND TIE RODS
DESCRIPTION
7-3
ing the
pitman
shaft
endways by
means of an
adjusti ng
screw which extends through the
gear
housing end
cover .
The head of adjusting
scr ew and
a
selectively
fitted
shim fit snugly
into a T-slot
in the end of pitman shaft, so
that
the screw also
contr ols
end play of
shaft.
The screw
is
locked by
an ext ernal lock
nut.
See
figur e 7-2.
The pitman shaft is carried in two bronze
bushings
in
steering
gear housing and one
the steering shaft, transmission cont r ol shaft
and selector control rod. The column jacket is
supported at the lower flange of instrument
panel
by
a split "pillow-block" type bracket
attached
by
two
bolts.
A rubber liner is
lo-
cated between the jacket and the bracket to
r
eliminate squeaks at this point. The
steering
wheel
may
be set lower than production stand-
ard by installing sp
ecial spacers
between the
instrument panel flange and the column bracket.
STEERING
GEAR
HOUSING
a
IDLER LEVER
BRACK
E~
FRAME
CLAMPS FOR SIDEW ISE ALIGNMENT
PIVOT BOLT & SLOTTED BOLT HOL
ES
FO R VERTICAL A
LIGNME N T
Figure 7-3-Stee rin g
Gear to Frame
Mounting
bronze
bushin g
in housing
side cover.
A spring-
loaded
leather sea l in
housing prevents leak-
age of lubricant at
oute r
end of
the
shaft. See
figur e
7-2.
The lower end of t
he steering
shaft is car-
ried
by t
wo
spherical r
oller thrust bearings
which
bea r
against
spher ical
seats on the ends
of
the shaft worm. The
outer r
ace of the upper
thrust bearing is pressed into the gear
hous-
ing.
The outer race of the lower thrust
bear-
ing is formed in the thrust bearing adj
uster
which screws into the housing end cover
and
is locked by a
nut.
See figure 7-15. The
upper
end of steering shaft is
supported
by a
ball
bearing moun t ed
in the direction signal switch
housing
on
up
per
end
of
the st eering
gear
column
jacket. The upper end of
steering
shaf t
has a serrated taper
seat
for
t
he
steering
wheel
which is retained by a nut and lock washer.
The steering gear column jacket is bolted to
a flange on steering gear housing, at which
joint a felt seal is located to prevent engine
noise and fumes from passing through jacket
into the car body. The column
jacket
houses
A
bracket on the
frame
side
rail helps
to
support
the steering gea r
housing which is
attached t
o bracket
and
side rail by
clamps
and four long bolts. The
front
lower bolt serves
as a pivot and
t
he
other
bolts pass
t
hrough
slotted holes in t
he
frame bracket
and side
r
ail
t
o
provide adjustment for
vertical align-
ment of
steering gear assembly.
The clamps
bear against the cylindrical extension of gear
housing so that housing can be turned in clamps
to provide for sideways alignment of the as-
semb ly. See
figure 7-3.
b. Steering Tie Rods and Tie Rod Ends
The steering tie
rods, which
conn ect the pit-
man
arm
t
o
the st eer ing
arms on the steering
kn
uck les,
are direct
center point steering type.
The right (long ) tie rod is joined to the left
(short) tie rod and to the pitman arm by ball
stud and spring-loaded bearing connections
which provide free movement in all required
directions without lost motion.
The ball studs riveted on the left
(short)
tie
rod and the pitman arm seat between pairs of

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