Mercedes-Benz 1998 SL 500 Operator's Manual page 114

5. Prevent vehicle from rolling
away by blocking wheels with
wheel chocks (not supplied with
vehicle) or sizable wood block
or stone. When changing a
wheel on a hill, place chocks
on the downhill side blocking
both wheels of the other axle.
On a level road, place one
chock in front of and one be
hind the wheel that is diagonally
opposite to the wheel
being changed.
6. Using lug wrench, loosen but
do not yet remove the wheel
bolts.
7. Remove the protective cover from
the jack support tube opening by
inserting a screwdriver in the
opening and prying it out.
The tube openings are located
directly behind the front wheel
housings and in front of the rear
wheel housings.
8. Insert jack arm fully into the
tube hole up to the stop.
Position the jack so that it is
always vertical (plumb-line) as
seen from the side (see arrow),
even if the vehicle is parked on
an incline.
9. Jack up the vehicle until the
wheel is clear of the ground.
Never start engine while vehicle
is raised.
10. Unscrew upper-most wheel bolt
and install alignment bolt (1)
supplied in the tool kit. Remove
the remaining bolts. Keep bolt
threads protected from dirt and
sand.
11. Remove wheel. Grip wheel from
sides. Keep hands from beneath the
wheels.
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