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8 OP ERATION
N MÅ. 410-0 :
!'
a,/ /i//u/!i //
'',;I il/ //HL
VI. CHECKING
AND ADJUSTING THE STEERING
GEOMETRY
The
crossmember supporting the
steerinq hs
slots at
its fixinq point on the
front subframe.
Any
vertical
movement
of thi5 crossmember
alters the steeririg
geonietry
WARNING
This operation
is only to be curried
out
in
certain
cases. such
as
accidental
impact. with repercussions
on the steerinq
systern.
-
work
on
the
vehicie entailing
removal
of
steerinq
crossmember,
-
vehicie
with poor road
stability
(
poor
stright-ine
stability)
or wlth excessive
tyre wear.
CHECKING
Prepare
the vehicle.
as
for
checking
front wheel
alignment
/i(i/ V L
NOTE
A
iii, i/O!
s fiirJ//
/
With the steering
in
the
straiqht-ahead
position,
lock the steering
using
a
comrnercioily
available
tool
(
FACOM
-
MULLER
-WILMONDA)
8)
!'o.'IHr
?riiJ
h /
2.
Mark
position of
vehicie
in
relation
to ground
Secure a weighted length
of
string to
the
front
bumper. and mark
the position
of
the
weiqht on
the
ground
(
The
object of this
is to always bring
the vehicie
back
to the same
position
in order ta
carry
out
correct
measurements
NQTE
Other pracedure
This check having
to
be
carried out wheel by wheel.
it
is possible to use the free projector.
Secure pz-ojector to
scuttle
panel
crossmember,
and
focus it anto a fixed object, which will indicate the
initial positioning of
the vehicle.
3.
Meosure
the variation
in
the wheel
alignment wheel
by
wheel,
as a
functionof
the height
of the
vehicie.
a
)
from th
'
JIJ ffi
fil (IT! 1:,,, l
rJ Si//Ou to
Ih o /1 iI/,
/uosi/ir.o/
Ilr)uocI
.
-
With vehicie in
uornii
dr/ring pos it/on.
engine
running
and
position marked
in
relation
to ground
Mark position
of luminous
spot on front graduated
ru
le.
Place rrianual
height
contral lever
in
high
position.
and wait
for vehicie
to stabilize.
Check and ad just
if
necessary
position of vehicle
in relation
to ground. (
night
or /un,iuoas
so!
/ vd
0frmnd
).
Mark position
of
luminous
spot on
front graduated
rule, and
on
rear
one
1)
Front and rear
readings are the
same (no
variation in aliqnment
in the wheel
).
NOTE
The
reading
(high or ian /msitiou
on
the graduated rules
differs
from
the
initial
readinq
no ni iii o,iliiing
/uo
sition )
because
the front truck
has altered.
2)
Front and rear reodings
are different (in this
case the
aliqnment has
altered.either
in
toe-in Or toe-out
).
o to 1
mm
toe-n
is
permi
ssi
ble
on either wheel,
b
)
J T()/// 1
//i)
ff/
cii
tlui
1/1/
(
/io
Si
I/O
1/
/0 II, lo tu
rosi tiOu,
(
R c' ho nu
il
)
Proceed as for previous measuremdnts,
place
manual heiqht
control lever in low position.
In
this case. the permissible
difference
in align-
ment
is 0 to
1
mm toe-out.
Do
not actuate
steering
wheel
during
check
hydraulic
locking
of rock
).
As a precaution.
a
steering
wheel
locking
tool
may olso
be osed.
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