Opel CORSA Owner's Manual page 228

226 Vehicle care
Alloy wheels with centre cap:
Insert extractor in the open slot of
the centre cap and withdraw the
cap from the wheel. Vehicle tools
3 212.
2. Install the wheel wrench ensuring
that it locates securely and loosen
each wheel bolt by half a turn.
The wheels might be protected by
locking wheel bolts. To loosen
these specific bolts, first attach
the adapter for the locking wheel
bolts onto the head of the bolt
before installing the wheel
wrench. The adapter is located in
the glovebox.
3. Ensure the jack is correctly
positioned under the relevant
vehicle jacking point.
On versions with sill panelling or
retrofitted sill panelling, no jack
may be used. The vehicle may be
damaged.
4. Set the jack to the necessary
height. Position it directly below
the jacking point in a manner that
prevents it from slipping.