010-10
FUNDAMENTALS
FOR
THE
DO-IT
YOURSELF
OWNER
TOOLS
Torque
Wrench
B021FNG
Fig
.
12
.
Jack
stand
for
safely
supporting
car
to
work
underneath
.
B022FNG
Fig
.
13
.
Oil
change
equipment
includesdrainplug
wrench
(17mm),
8
qt
.
drain
pan,
and
funnel
.
A
torque
wrench
is
used
to
precisely
tighten
threaded
fasten-
Fig
.
15
.
Feeler
gauge
set
.
ers
to
a
predetermined
value
.
Many
of
the
repair
procedures
in
this
manual
include
BMW-specified
torquevalues
in
Newton-
meters
(Nm)
and
the
equivalent
values
in
foot-pounds
(ft-Ib)
.
Digital
Multimeter
A
torque
wrench
with
a
range
up
to
about
150
Nm
(185
ft-lb)
has
adequate
capacity
for
most
of
the
repairs
covered
in
this
manual
.
For
recommended
torque
values
of
10
Nm
or
below,the
English
system
equivalent
is
given
in
inch-pounds
(in-lb)
.
These
small
values
may
be
most
easily
reached
using
a
torque
wrench
calibrated
in
inch-pounds
.
To
convert
inch-pounds
to
foot-pounds,
divide
by12
.
Fig
.
14
.
Torque
wrenches
.
Inexpensive
beam-type
(top)
is
adequate
but
must
be
read
visually
.
Ratchet-type
(bottom)
can
be
pre-
set
to
índicate
(click)
when
torquevalue
has
been
reached
.
Feeler
Gauges
B018FNG
Feeler
gauges
are
thin
metal
strips
of
precise
thickness,
used
to
measure
small
clearances
.
They
are
normally
available
as
a
set,
covering
a
range
of
sizes
.
See
Fig
.
15
.
Several
types
of
torque
wrenches
are
available
.
They
al¡
do
Many
of
the
electrical
tests
in
Chis
manual
cal¡
for
the
mea-
the
same
job,
bu¡
óffer
different
convenience
features
at
differ-
surement
of
resistance
(ohms)
or
voltage
values
.
For
safe
and
ent
prices
.
Two
typical
torque
wrenches
are
shown
in
Fig
.
14
.
accurate
tests
of
ignition,
fuel
injection,
and
emission
control
The
most
convenient
ones
have
a
built-in
ratchet,
and
can
be
systems,
the
multi-meter,
shown
in
Fig
.
16,
should
be
digital,
preset
to
indicate
when
a
specific
torque
value
has
been
with
high
(at
least
10,000
ohms)
input
impedance
.
Some
reached
.
Followthe
wrench
manufacturer's
directions
for
use
meters
have
automotive
functions
suchas
dweil
and
pulse
to
achieve
the
greatest
accuracy
.
width
that
are
useful
fortroubleshooting
ignition
and
fuel
injec-
tion
problems
.
CAUTION-
The
DME
system,
central
body
electronics,
and
other
electronic
systems
may
be
damaged
by
the
high
current
draw
of
a
test
fight
with
a
normal
in-
candescent
bulb
.
As
a
general
rule,
usea
high
ím-
pedance
digital
multimeter
or
an
LED
test
fightforall
electrfcal
testfng
.
B020FNG
