Bulova Series 218 Service Manual page 32

The practice of cleaning
a
con-
vnnlional watch, as a
routine pari
of nearly
every
repair, results
from the
watchmaker's knowl-
Sdgt
(Ji.it
optimum
performance
and
reliability
can
be expected
only
when
lubrication
Is
fresh.
The performance
of
ACCUTRON
is
relatively
unaffected
by
the
con-
dition
of the lubrication.
Cleaning
will
not usually be required
to re-
store
an
ACCUTRON
timepiece
to
proper operating condition
When
cleaning
is
necessary, the
infor-
mation
an
tbi*
p»ko
is
applicable-
Cleaning
Separate
all
cap jewels
in
jeweling devices with spring-held
cap jewels
from
pillar
plate
and
tram
bridge.
After
cleaning, replace
cap jewel assemblies.
Ultrasonic
quipim-nt
in
necessary
for
cleaning the
ACCUTRON
movement.
The
ACCUTRON
movi-iiieni
should be
treated
exactly as
any
fine
watch movement,
with
one exception.
The
electronic circuit,
the tuning fork
and
the
pawl
bridge
should
not
be cleaned
in
ultrasonic
equipment, because of
the
possibility of
damage
to
delicate
parts.
The
tuning fork, colls,
and
pawl
bridge
can be cleaned
satisfactorily
by merely
dip-
ping
into
a "benzine cup"
and thru placing 00
>
tissue to dry.
Care should be taken
to prev.-nl DUHil
chips,
which
may
be
present
in
the cleaning
cup
or on
the
bench, from
being
attracted
In
the
permanent magnets on the
linn
of
the tuning
fork.
Inspect the fork carefully
after cleaning,
anil
if
this
has occurred.
any
particles ih.ii
linging
(•
thi
mtgDtto can be removed with masking
tape.
NO
PARTICLES
SHOULD
IIK
LEFT
CUNCINC TO FORK MAGNETS.
The
center whei'l
.muenibly
[cannon pinion with center whcell
should
not
be token
apart,
but cleaned
an
n
unit.
Aftur
cleanimt. tin-
whirl should
not
be rotated
until
properly
lubricated.
(See reassembly instruction
Page
33.
J
Tin-
index
wind
required special
handling
care
in
cleaning
to
prevent damage
io
the
!,,!li
I
of this
purpose,
it iu
necessary
tu
use
a
suitable tool to
grasp
the
index
wheel
pivots
when imtmTrung
the
index wheel
in
the ultrasonic
cleaner.
NEVER
HANDLE TUB
INDEX
WHEEL
HY
THE
RIM-
GRASP THE
PINION
ONLY
A mi
table
holding loot for
cleaning the index wheel can
easily
be fabricated
by
modifying an ordinnry
pair
of
watchmaker's tweeter*
made
of
brass or Othtl "<"'
magnetic
material. || follows:
L.
Spot
drill
the insider,
oi the
tweezer
tips
as
shown
in
the
upper
section of
Fig,
32.
2.
Bend
a
piece
ol
stiff
win- around
the
tweezers and form
the
wire so
that
it
can
be used as
a
clamp.
One
end
of the
wire should
be
placed
between
the
tweezer
tongs.
1
Check
thai
wire clamp
locks
tweezer
tips
progressively closer together as
clamp
is
pushed towards
the
tips.
Note: Authuri/rd Material
Distributors
can supply,
at
nominal
cost,
a
special
Index
Wheel
Holder
illustrated tn
lower
section
of
Fig.
30