Service manual

FRONT AXLE
FRONT SUSPENSION
1
I
TROUBLE DIAGNOSES
AND
CORRECTIONS
V
v
Condition
Vibration shock
and
shimmying
of steer
ing
wheel
Vibration Too
much backlash of steer
ing gear
abrasion of
each
part
of
linkage
and
vibration
of front wheels are in
many
cases transmitted to
the
steering
wheel
This is
very
much noticeable when
travelling
over bad roads and at
higher
speeds
Shock When
the
front wheels are travel
ling
over
bumpy
roads
the
play
of
the
steering linkage
is
transmitted to
the
steering
wheel This
is
especially
notice
able
when
travelling rough
road
Shimmying
Abnormal
vibrations of
the
front
suspension
group
and the
whole
steering linkage
which
occur when a
specific speed
is
attained
Vehicle
pulls
to
right
or
left
When
driving
with hands off the
steering
wheel on a flat road
the vehicle gently
swerves to
right
or left
Note A defective
rear
suspension may
also be the
cause
of this trouble and
therefore
see
also the
chapter dealing
with the
rear
su
spension
Probable
cause
Improper
air
pressure
of tire
Unbalance ar d deformation of road
wheel
Unevenly
worn tire
or
insufficient
tight
ening
Improperly adjusted
or
worn front
wheel
bearing
Faulty
wheel
alignment
Worn or loose
suspension
link screw
bushing
Demaged
idler
arm
Insufficiently tightened
steering gear
housing
Worn
steering linkage
Improper steering gear adjustment
in
sufficient backlash
Defective shock absorber or
loose
installa
tion
Unbalanced vehicle
posture
Improper
air
pressure
of
tire or
insuffici
ent
tightening
of wheel nuts
Difference in
height
of
right
and left
tire
treads
Incorrect
adjustment
or abrasion of
front
wheel
bearing
Weakened front
torsion
spring
or devia
tion
from standard
specification
FA 21
Corrective
action
Adjust
Correct
the
unbalance
or
replace
Replace
or
tighten
Adjust
or
replace
Adjust
Replace
Replace
Tighten
Replace
ball
joint
Adjust
Replace
or
tighten
Adjust
Adjust
or
tighten
Replace
tires
Adjust
or
replace
Replace