Vauxhall Astra Owner's Manual page 210

3. On som e vehicles, the jac king points are
concealed by flap s. Fold the flap
outwards.
208
4. Before attaching jack, set to req uired
height b y hand. Fit jack arm at front –
and rear – in such a w ay that jack claw
(arrow in illustration) goes around the
vertical ridge and eng ages into the
rec ess in the ridge.
When turning the crank , ensure that the
edge of the ja ck base is firmly on the
ground, v ertically in line with the contact
point.
If this is not the case when jacking up the
vehicle, lower vehicle immediately and
reposition the jack.
Raise vehicle b y turning crank handle.
5. Unscrew wheel bolts (on wheel cover
with lock 3, remove adapter) and put in
a safe pla ce so that the threads do not
get d irty .
6. Replac e wheel. For notes on spare wheel
and tem porary wheel see page 202.