Mercedes-Benz B-Class Operator's Manual page 323

before raising the vehicle, secure it from
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rolling away by applying the parking brake
and inserting wheel chocks. Never
disengage 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, 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 inches (3 cm).
never place your hands and feet under the
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raised vehicle.
never lie under the raised vehicle.
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never start the engine when the vehicle is
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raised.
never open or close a door or the trunk lid
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when the vehicle is raised.
make sure that no persons are present in
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the vehicle when the vehicle is raised.
! The jack is designed exclusively for
jacking up the vehicle at the jacking points.
Otherwise, your vehicle could be damaged.
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Using lug wrench :, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts
completely.
Changing a wheel
The jacking points are located just behind the
wheel housings of the front wheels and just
in front of the wheel housings of the rear
wheels (arrows).
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Take the ratchet wrench out of the tire-
changing tool kit and place it on the
hexagon nut of the jack so that the letters
AUF are visible.
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Position jack = at jacking point ;.
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Make sure the foot of the jack is directly
beneath the jacking point.
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