Saab 99 - General Hints; General; Jacking and Blocking up

General
hints
General
A
neat and
tidy workshop is essential for
the
proper
servicing of vehicles.
Some
parts of the
car need to be treated with
special care
and effectively protected
against
dirt and
contamination while work
is in
progress. For
the
mechanic who
may
be new
to the job
the following points may
be
of
help:
1.
Protect
fenders
and
other paintwork
with suitable coverings.
2.
Lay
protective coverings over the seats
and
upholstery to
save
them from stains
of
oil
and
dirt.
3.
Clean the insides of fenders and the
space round
the
rear
axle thoroughly
before starting
to
work on
wheel
hubs
. and
axles. This makes the job easier and
prevents grit
and
dirt
from
getting
into
bearings and other
susceptible parts.
4.
Before
unscrewing spark
plugs, clean
the recess round
the
plug thoroughly.
5.
Every job
must have its proper place.
It
is bad
practice, for example, to disas
semble an engine or
transmission on
a
bench
which
is
also used for
filing,
etc.
or where
filing
is done in
the
immediate
neighbour boo d.
Jacking
and
blocking up
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arid
this
lacks
the
neutral
application
points
for a
jack
that
a
girder
chassis
provides.
There
are
however
two
special
engagement
recesses
on
each
side designed
to
fit
the jack
supplied
with
the
car’s tool
kit;
these are
intended
for
use during
wheel
changing,
etc.
The
engine
compartment
floor
is also
reinforced
immediately
under
the
cross
member
that
supports
the engine
to
provide
an
application
point
for the
workshop
jack.
A
similar
reinforced
jacking
point
is
provided
underneath
the
floor at
Lile buck
behind
the
fuel Lank.
As
most
workshop
jacks
have a
forked
lifting
head,
it
is
advisable
to
lay a
wooden
block
of
suitable
size
across
the
fork
to avoid
da
maging
the
floor of
the
car. For
some
jobs
it
is necessary
to
raise the
front
or rear
end
of
the car.
In such
cases
the jack
engagement
recesses
under
the
sills
should
be
utilized.
I
100—1