lever com in the moin
drive
column
with
moly-lube.
Now,
seot
the leof lever in
ploce
-- one end
of the
leof
lever hooks to
the
forked
tob
on the blode
operoting ring, while the
other end
fits
within the
leof
lever com
in
the
moin drive
column. Reploce the
two screws to hold the leof lever in
ploce.
You
con now cockond releose ihe
shutter
to test the operotion.
Remember, we mentioned thot the leof lever
hoso sliding odiust-
ment--by loosening the two screws,
youcon slide fheentire leof
lever
ossembly
up or down. lf
the leof
lever is
sitting
too
low,
the
shutter
blodes
won't
be held fully open on
"bulb";
ond
if the
leqf leveris
sitting
too high, the blodesmoynotclosecompletely.
Set
the speed knob
io
"bulb"ond
depress the
releose plunger
--
hold the releose
plunger
depressed
to
keep the
blodes
open.
lf
the
blodes
oren't
fully open, loosen thetwo screws holding the
leof lever.
Now,
still holding
the blodes open on
"bulb, "
slide
the leof lever ossembly
up until the
blodes
ore fully
open
--
os
they ore in figure 37. And, ofter
moking the odiustment,
moke
sure
the leof lever retoining screws ore snugly
tight.
ADJUSTING THE SHUTTER SPEEDS IN THE ARGUS C-4
There
ore two shutterspeed odiustment points
in the Argus C-4
--
one is the omountof
initiol
tension on
themoinspring; ond the
other is fhe position
of the
speed
com.
Remember, you con olter theomountof
initioltension byfull-
turn increments. Check the shutter
operotion
of 1/10 second,
the
slowest shutter speed
--
if
you hove sufficient
initiol tension
on
the moinspring, the
shutter'should run
through smoothly ol
1/10
second.
But
the fostest shutter speed
--
l/300 second
--
is your in-
dicotion of the
preciseomountof
initiol tension
necessory. You'll
soon leorn
the
procedures for
testing shutter speeds. For
now,
remember
thot
you
must odd initiol tension to moke the
I/300
second
foster,
qnd
letoff initiol tension to
moke
thel/300 second
slower.
NOTE: lf
you hove
to odd more fhon
two turns
of initiol
tension, you
moy note thot the
moinspring
"buckles"
slighrlv. A slight
omount of buckle won't
domoge the
moinspring.
But if the buckle
is excessive, there
is
probobly
some
other reoson thot the shutter
speed
isn't
coming
up
to I/300 second.
Rother
thon odding
more
in itio I tension, check thorough
I
y for o
comero
mo
I function
.
43
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