Mercedes-Benz SL SERIES Operator's Manual page 592

Changing a wheel
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The folding wheel chock is an additional
securing measure to prevent the vehicle from
rolling away, for example when changing a
wheel.
Fold both plates upwards :.
X
Fold out lower plate ;.
X
Guide the lugs on the lower plate fully into
X
the openings in base plate =.
Securing the vehicle on level ground
On level ground: place chocks or other
X
suitable items under the front and rear of
the wheel that is diagonally opposite the
wheel you wish to change.
Securing the vehicle on slight downhill gradients
On light downhill gradients: place
X
chocks or other suitable items in front of
the wheels of the front and rear axle.
Raising the vehicle
G WARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directly under
the jacking point of the vehicle.
! The jack is designed exclusively for jack-
ing up the vehicle at the jacking points.
Otherwise, your vehicle could be damaged.
Observe the following when raising the vehi-
cle:
To raise the vehicle, only use the vehicle-
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specific jack that has been tested and
approved by Mercedes-Benz. If used incor-
rectly, the jack could tip over with the vehi-
cle raised.
The jack is designed only to raise and hold
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the vehicle for a short time while a wheel
is being changed. It is not suited for per-
forming maintenance work under the vehi-
cle.
Avoid changing the wheel on uphill and
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downhill slopes.
Before raising the vehicle, secure it from
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rolling away by applying the parking brake
and inserting wheel chocks. Never disen-
gage the parking brake while the vehicle is
raised.
The jack must be placed on a firm, flat and
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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.
Do not use wooden blocks or similar
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objects as a jack underlay. Otherwise, the
jack will not be able to achieve its load-
bearing capacity due to the restricted
height.
Make sure that the distance between the
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underside of the tires and the ground does
not exceed 1.2 in (3 cm).
Never place your hands and feet under the
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raised vehicle.
Do not lie under the vehicle.
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