80
.8A
Reassembly
of
the
model
80
movement
PLATE
SWEEP
SECOND
STAFF
WHEEL
ASSEM.
II-CONIC
BEARING
SWEEP
SECOND
HAND
Replace the
balance
wheel assembly care-
fully Into the movement by tilting
the
wheel
and
Inserting first,
the
dial side pivot (halr-
!pring
side) then, the movement side pivot
into the
"V-conic" bearing. Adjust
the
balar.ce screw assembly enough to hold
the
balance
in
place.
By
rotating
the
balance
wheel, insert the hairspring into
the
regula-
tor slot
and
hairspring bracket.
Before repinning the hairspring, make
certain the impulse pin
is
within the slot
in
the
fork of the pallet lever. Repin
the
hairspring making sure
that
the
wedge
pin
is
straight
and
true,
as
any
distortion
to
the
pin could interfere with the normal
"breathing"
of the hairspring. The
end
-
shake
is
now finally adjusted using caution
to
apply
only minimum downward pressure
to the balance screw
as
excessive pressure
could
damage
the points of the
balance
staff.
Inspect
the
hairspring to
be
certain
that
II
is
properly adjusted.
As
shown by the
diagram, the hairspring should
be
in
light,
permanent contact with the inside
edge
of
the
regulator slot. The hairspring should
not leave
the
inside
edge
of
the
regulator
slot
at
any
time during
the
complete maxi-
mum
occilitotion of
the
balance
.
Insert
the
tabs
on the Dial Assembly into
the
holes
in
the Dial Spacer
and
into
the
two
tab
holes
in
the Dial Plate (see illus-
trations on Page 80.3). ft.pply light pressure
and
move Dial Assembly
and
Dial
Spacer
until the two bosses on
the
spacer
ore
in
the
locating holes
in
the Dial Plate. Bend
the four dial
tabs
under
the
Dial Plate to,
secure
the
assembly.
Replace the sweep second
hand.
Be
certain
the sweep hand
is
set below the chamfer
on the top of the staff
as
shown.
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