Opel Automobile Owner's Manual page 126

126 Vehicle care
4. Set the jack to the necessary
height before positioning it directly
below the jacking point in
a manner that prevents it from
slipping. Position the jack arm so
that the jack claw grips the vertical
web in the recess.
The edge of the jack base must be
planted firmly and vertically in line
with the contact point. Rotate
handle until wheel is clear of the
ground.
5. Unscrew the wheel bolts.
If there are lock washers on the
wheel bolts, these must not be
removed.
6. Change the wheel.
7. Screw in the wheel bolts.
8. Lower vehicle.
9. Install the wheel wrench ensuring
that it locates securely and tighten
each bolt in a crosswise
sequence. Tightening torque is
110 Nm.
Alloy wheels: put wheel bolt cap
on and engage, inserting pin on
rear of wheel bolt cap into relevant
hole in wheel.
Alloy wheels with anti-theft lock:
Put wheel bolt cap on. Insert and
tighten anti-theft lock.
10. Before installing the wheel cover,
clean the wheel around the
retaining clips. Valve symbol on
back of wheel cover must point
towards valve on wheel.
Align and engage wheel bolt cap
or wheel cover and wheel bolt
caps.