R
The jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a large,
flat, load-bearing underlay must be used. On
a slippery surface, a non-slip underlay must
be used, e.g. rubber mats.
R
Do not use wooden blocks or similar objects
as a jack underlay. Otherwise, the jack will
not be able to achieve its load-bearing capa-
city due to the restricted height.
R
Make sure that the distance between the
underside of the tires and the ground does
not exceed 1.2 in (3 cm).
R
Never place your hands and feet under the
raised vehicle.
R
Do not lie under the vehicle.
R
Do not start the engine when the vehicle is
raised.
R
Do not open or close a door or the trunk lid
when the vehicle is raised.
R
Make sure that no persons are present in
the vehicle when the vehicle is raised.
Vehicles with alloy wheels and hub caps:
the wheel bolts are covered by a hub cap.
Before you can unscrew the wheel bolts, you
must remove the hub cap. Two different var-
iants can be installed.
X
To remove: take socket
;
and lug wrench
=
from the vehicle tool kit (
Y
page 277).
X
Position socket
;
on hub cap
:
.
X
Position lug wrench
=
on socket
;
.
X
Using lug wrench
=
, turn hub cap
:
coun-
ter-clockwise and remove it.
X
To install: before installing, check hub
cap
:
and the wheel area for soiling and
clean if necessary.
X
Put hub cap
:
in position and turn until it is
in the right position.
X
Position socket
;
on hub cap
:
.
X
Attach lug wrench
=
to socket
;
and
tighten hub cap
:
.
The tightening torque must be
18 lb-ft (25 Nm).
i
Note that the hub cap should be tight-
ened to the specified torque of 18 lb-ft
(25 Nm). Mercedes-Benz recommends that
you have the hub cap installed at a qualified
specialist workshop.
X
Using lug wrench
=
, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts com-
pletely.
The jacking points are located just behind the
front wheel housings and just in front of the
rear wheel housings (arrows).
Mercedes-AMG vehicles and vehicles with
AMG equipment: to protect the vehicle body,
the vehicle has covers installed next to the
jacking points on the outer sills.
Changing a wheel
315
Wheels
and
tir
es
Z
Summary of Contents for SL 450 2019
Page 330: ...328...
