Emergencies
Important information about wheel bolts
F
act
ory-fitted rims and wheel bolts are spe-
cially matched during construction. There-
fore, if different rims are fitted, the correct
wheel bolts with the right length and heads
must be used. This ensures that wheels are
fitted securely and that the brake system
functions correctly.
In certain circumstances, you should not
even use wheel bolts from vehicles of the
same model.
WARNING
If the wheel bolts are not properly tight-
ened, they could come loose while driving
and cause an accident, serious injury and
loss of vehicle control.
●
Use only wheel bolts which correspond to
the rim in question.
●
Never use different wheel bolts.
●
Wheel bolts and threads should be clean,
free of oil and grease, and it should be pos-
sible to screw them easily.
●
To loosen and tighten wheel bolts, only
use the wheel wrench that came with the
car from the factory.
●
The wheel bolts should only be loosened
slightly (about one turn) before raising the
vehicle with the jack. Risk of accident!
●
Never apply grease or oil to wheel bolts or
to the wheel hub threads. Even if the bolts
have been tightened to the prescribed tor-
que, they could come loo
se while driving.
●
Never loosen the screwed joints of wheel
rims with bolted ring trims.
●
If wheel bolts are tightened below the
prescribed torque, the bolts and rims could
come loose while driving. If tightening tor-
que is too high, the wheel bolts or threads
can be damaged.
Raise the vehicle
Fig. 38
Jack position points.
Fig. 39 Cross member: positioning the jack on the
vehicle.
●
Place the jack* (vehicle tools) on firm
gr
ound. If necessary use a lar
ge, strong
board or similar support. If the surface is slip-
pery (for example tiles) place the jack on a
rubber mat or similar to prevent it from slip-
ping
›››
.
●
Find the support point on the strut (sunken
ar
e
a) closest to the wheel to be changed
›››
Fig. 38.
●
Turn the jack* crank handle, located below
the strut support point, to raise it until the
tab
1
›
›
›
Fig. 39 is below the housing provi-
ded.
●
Align the jack* so that tab
1
“grips” onto
the housing pr
o
vided on the strut and the
mobile base
2
is resting on the ground. The
base plat
e
2
should fall vertically with re-
spect t
o the support point
1
.
●
Continue turning the jack* until the wheel
is slightly lift
ed off the gr
ound.
48