PREPARATION-confinued
______
_
Examining and lubricating the O·rings:
1.
To
remove the O-rings, except the one
in
the synchro
socket cover, grasp the
ring
between your thumb and
forefinger. Pinch your fingers together
as
you
slide
them
in
the direction of the arrow to create slack
in
the O-ring.
Then
grasp the slack portion with your
other hand and pull the ring off (see
Fig.
1).
To
remove the O-ring
in
the synchro socket cover,
use
the edge of a credit card or dive card or some
thin, blunt, instrument. Never use a knife or other
sharp·edged object.
Push
up
on
the center of the
cover with a fingertip (or
pOinted
object), insert the
card under the ring,
and
pull it
up
to lift the O-ring out
(see
Fig
.
2).
Do
not scratch the O-ring
in
the process.
2. Visually examine each O-ring for imperfections. If
any
O-ring
is
damaged (by tears, cuts, or other imper-
fections), discard
it
immediately. If any O-ring has dirt,
sand, hair, or foreign matter
on
it
, rinse the O-ring
in
fresh water to remove
it.
3.
When
lubricating the various parts of your flash unit,
use
only the special non·water·soluble silicone
lubricant supplied with the speedlight. Never use
other lubricants (such
as
Vaseline) which are water-
soluble.
4.
To
lubricate the O-rings, smear a small amount of the
special silicone lubricant
on
your fingertips and then
gently
run
each O-ring between your fingertips. Never
use
a brush or similar object to apply the lubricant;
small hairs may fall into the channel and allow water
to enter the flash unit. While lubricating each O-ring,
examine
it
with your fingertips for imperfections. If
an
O-ring
is
properly lubricated it will glisten and wi
ll
Fig . 1
not have "gobs" of lubricant
on
it.
To
ensure the
longest possible flash unit life, apply lubricant when-
ever necessary. Lubrication protects the O-rings from
excessive wear; it also makes it easier to attach or
remove other parts.
5. Visually examine the channels into which the O-rings
fit to determine that each
is
clean and smooth. If any
channel
is
dirty, clean it with a non-lint-bearing mate-
rial. Coat each channel with a thin film of lubricant
while being careful not to apply too much.
6. Reseat all of the O-rings with your fingertips by
in
-
serting one side of the ring into the channel and
holding
it
in
position while rolling the other side of the
ring
into place (see
Fig
.
3)
.
To
insert the O-ring into
the channel of the synchro socket cover, push
up
on
the center of the cover with a fingertip (or pointed
object), place the
ring
over the channel, then press
it
down into place. Check that the O-ring
is
not twisted
and
that each of its edges
is
properly seated (see
Fig
.
4).
7. Check the surfaces which are opposite the O-rings
to determine that each
is
clean, smooth, and free of
foreign matter. Clean and lubricate the surfaces
in
the same manner
as
the channels.
8. When reattaching the parts with O-rings, be sure that
each O-ring seats properly and securely.
All
of the
O-rings must be properly aligned and not "pinched."
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