Disassembly of Movement Cont'd.
BALANCE
SCREW\
ASSEMBLY
__
\
100.4
BALANCE
WHEEL
ASSEMBLY
DAIL
PLATE
V-
NIC
BEARING
D.
Remove the Balance
Wheel
Assembly
as
follows:
l)
Remove
the
Hairspring
Wedge
Pin, being
careful
not
to
distort either the
Pin
or
the
Hairspring
(see
illustration
at
left).
2) Rotate the Balance
Wheel
carefully
(turn the
Wheel,
do
not
touch the Hairspring) until
the Hairspring
tail
is
free
of
the
Hairspring
bracket
and
the
Regulator.
3) Loosen the Balance Screw
Assembly (turn counterclock-
wise) until the end
of
the Bal-
ance
Staff
is
sufficiently free
of
the
"V~Conic"
bearing,
care
must be exercised
while
loosen-
ing the Balance Screw
to
be
sure
that
only
minimum
down-
ward
pressure
is
applied
with
the screwdriver. Excessive
down-
ward
pressure on the Balance
Screw can seriously
damage
the
Balance
Staff
Points.
4)
Carefully
lift
the Balance
Wheel
Assembly
out
of
the
movement.
5) Tighten Balance Screw As-
sembly several turns to prevent
loss
during
cleaning
and
handling
.
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