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6-32
WHEEL ALIGNMENT
CHASSIS SUSPENSION
(230
)
toe-in to some extent.
5.
If
camber is incorrect and cannot be ad-
justed to proper limits, adjust camber as close
to specifications as possible and then check king
pin inclination
(subpar. d,
below) before at-
tempting further cor r ection.
d. Checking King Pin Inclination
CAUTION
: When
checking king
pin inclina-
tion, car
must
be on a level
surface, both
trans-
versely and fore and
aft.
It must
be
at curb
we
ight
and must be
maintained at specifie
d
spring trim
height while checking (p
ar.
6-17).
With camber known to
be
within specified
limits, king pin inclination should check within
specified limits given in figure 6-36.
If
camber is correct and king pin
inclination
is not correct, a bent steering knuckle support
is
indicated.
which fatigue and
breakage
may
develop in
service.
e. Checking and Adjusting Toe-In
CAUTION
: Car must be at cur
b weight
and
specified
trim heigh t,
with steering
gear
and
f
ront
wheel
bearings
prop
erly adjusted
and no
looseness at tie rod ends. S
ee subparagraph a,
abov e.
Th
e
car should
be m
oved
forward
one
compl
ete
revolu tion of
the w
heels
befor e
the
toe-in
check an1 adjustment is
started
and
the
car
should n
ever be
mo
v ed
backward
w
hile
making th
e
check and ad
ju stment.
1.
Turn steering wheel until
lower
spoke is
vertical, with front wheels in straight
ahead
position.
2.
Measure
the horizontal distance from the
near edge of front boss of
lower
control arm
shaft to the front edge of brake backing
plate,
1 - - - - -
--
-
--
- -
- -
- 8 -
-
-
-
-
-
- -
- -- - ---:
1--- -
--
- -
- -
-
- - 0
-
-
- -
-
- -
- -
-----1
~-----------
C
- -
--
-
-
- - - --
-
---i
~ - - -
-
-
-
-
- -
--
-
A
- -
--
- --
-- --
-
-
---1
Figure 6-38-front
Wheel
Toe-in
If
camber is incorrect beyond limits of ad-
justment and king pin inclination is correct, or
nearly so, a bent
steering
knuckle is indicated.
If
camber and king pin incli nat ion are both
incorrect by approximately
the same amounts,
a bent upper or lower control arm
is
indicated.
There is no adjustment for king pin inclina-
tion as this factor depends upon the accuracy
of the front suspension parts. Distorted parts
should be replaced with new parts. Th
e
prac-
tice
of heating and bending front suspension
parts to correct errors is not recommended as
this may produce soft spots in the metal in
on each side. Adjust tie rods, if necessary, to
make measurements equal on both sides. See
figure 6-38 dimensions "X."
3. Using a suitable toe-in gauge, measure
the distance between outside walls of ti
res at
the
front at approximat ely 10" f
r om the floor.
See
figure
6-38
dimension
"A."
Mark points
wher e gauge contacts
tires. NOTE:
A
n
accu-
rate check also can be made by
raising
and
rotating fron
t w
heels to scribe a
fine line near
the center of each
tire , then,
with
tire s
on the
floor and front spring trim height correc
t,
measure between scribed lines with a suitable
trammel. See figure
6-38,
dimension
"C."
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