Opel Cascada Owner's Manual page 216

214 Vehicle care
■ Never crawl under a jacked-up
vehicle.
■ Do not start the vehicle when it is
raised on the jack.
■ Clean wheel nuts and thread with a
clean cloth before mounting the
wheel.
9 Warning
Do not grease wheel bolt, wheel
nut and wheel nut cone.
1. Disengage wheel nut caps with a
screwdriver and remove. Pull off
the wheel cover. Vehicle tools
3 203.
Alloy wheels: Disengage wheel
nut caps with a screwdriver and
remove. To protect the wheel,
place a soft cloth between the
screwdriver and the alloy wheel.
Alloy wheels with centre wheel
bolt cap: Disengage centre cap by
inserting and pulling the extractor
3 203 in the recess of the brand
emblem.
2. Install the wheel wrench ensuring
that it locates securely and loosen
each wheel nut by half a turn.
The wheels might be protected by
locking wheel nuts. To loosen
these specific nuts first attach the
key adapter onto the head of the
nut before installing the wheel
wrench. The key adapter is
located in the glovebox.
3. Ensure the jack is correctly
positioned under the relevant
vehicle jacking point.