Datsun 1000 Workshop Manual page 123

14 Fronl
SuapemiOn
4
Mark
the
centre
line
on
both
tyres
at
approximately
208 254
mm
8
10 in above
the floor and
in
front of the
suspension
5
Using
a
suitable telescopic
gauge
place
it
between
the two
front
tyres on
the chalk marks
and
record
the
distance between
the centres of
the tyres
6
Maintaining
the wheels in the
straight
ahead
position
roll the vehicle forward until the marks
are
the
same
distance above
the
floor but
to
the
rear
of the
suspension
7 Again
use
the
telescnpic
gauge to
measure
and
record the
distance between the
marks
on
the
tyres
The
distance measured
at
the front of
the
tyres should
be
less
than the
measurement at the
rear
of the tyres
8
If
adjustment
is required
loosen
the lock
nut on
each end
of each
tie rod
and
turn
each rod
by
equal
amounts
until the toe in is correct
Tighten
the four tie rod lock
nuts
NOTE
t
is
important
to
make equal
adjustments on
each
tie rod
to
maintain the
central
position of
the steering
gear
f
an
optical
or
other
type
of toe
in guage is
used
follow the
manufacturer
s
instlUcnons
TO CHECK CAMBER AND CASTER
I
Before any
attempt
is
made
to
check
the
camber
or
caster
angles
or
to
check and
adjust
front wheel toe in the
suspension
unit
should be
thoroughly
checked
to
ascertain
that it is in
a
serviceable condition
The tread of the tyres should be examined for
excessive
or
uneven
wear as
certain conditions of tyre
wear are
indica
tive
of damaged
or worn
componen ts
in the
suspension steering linkage
and
or
wheels
and
bearings
The vehicle shoold be unladen
except
for the normal
amount
of
petrol
oil and
wateI
with
the
tyres inflated
to
the normal
pressure
2
Check
and
adjust
the tyre pressures
and set
the
vehicle up with the
alignment equipment
being
used
according
to the
manufacturers instructions
Bounce the
vehicle
up
and down several times and let it find its
own
level
3 Check the front wheel
alignment
toe in
and if
necessary
adjust
as
previously
described
4 Check the
caster
camber and swivel inclination
according to
the
instructions
set
down
for
alignmen
t
equipment being
used and compare with
the manufacturers
specifications
5 If the
caster
angle
is incorrect
check the radius
rod
brackets and rubber bushes Also check the
suspension
control
arm
rubber pivot bushes for
wear
6 If the camber and swivel inclination
angles are
both
incorrect
check the suspension
unit
upper
mounting
and
lower ball
joint
for
wear
orlooseness Check the
suspension
control
arm
for distortion
and
its rubber
pivot
bushes for
wear
7
If
the
swivel inclination
angle
is correct and the
camber
angle
is incorrect the
stub axle
is
bent
A
new
suspension
unit
should be installed
8 Measure the
toe out on
turns
of
the
front wheels
using the equipment
according to
instructions
If the
toe
in is
correctly adjusted
and the
toe out on
either
or
both left
or
right
hand
turn is
incorrect then the
tie rods
are
Gf unequal length or one or
both
steering
arms
may
be ben
t
In
the
latter
case
the
steering
armis
must be renewed
and the
steering linkage
re
adjusted
Note
The
maximum minimum steering angle
toe
in
toe out on
turns
is also detennined
by
the
distance
between
the face of the
adjustable
stop
fitted
to
the
steering arm
and
the bracket
on
the
rear
of
the lower
control
arm
when the wheels
are
turned
from
lock
to
lock
When
adjusting
the
steering angle by
stop
adjuster
ensure
the distance between the radius rod and the tvre is
not
less
than 30
mm
81 in
Should
the clearance be
less than
specified adjust
the
angle
stop outwards until
a
length reading not exceeding
27 5
mm
11 083
in
on
the
stop
adjuster bolt is obtained
9 For
angle
and
adjustment settings see
Specification
section
10
FRONT
SUSPENSION FAUI T
DIAGNOSIS
1200
SERIES
I Front end
noise
Possible
cause
a
Loose upper
suspension mounting
or
piston
rod
bearing
b
Loose
or worn
suspension
unit lower ball
joint
c
Noise in shock absorber unit
d Worn
steering linkage
or
idler
arm
components
e
Mal
adjusted
front hub
bearings
Remedy
Tighten mounting andlor adjust piston
rod bearing
Adjust tighten
or renew
lower ball
joint
Renew shock absorber
unit
Renew defective
components
Readjust
or renew
hub
bearings
124