3.
Remove the Source Four shutters with the following instructions:
a.
Remove the lens tube from the front barrel assembly by
removing the beam focus knob.
b.
Untwist and remove the Source Four front barrel
assembly from the reflector housing assembly by loosening
the barrel rotation knob and removing the retainer bolt.
c.
Lay the front barrel assembly on its side, with the iris slot
pointing up.
d.
Remove the four pan head 8-32 x 3/4” screws and 8-32
Ny-lok nuts that fasten the top and bottom barrel casting.
Remove the four shutter springs.
Always wear protective
eyewear during this procedure, as the springs may pop
out of place.
e.
Separate the top and bottom barrel casting, and remove the
four shutter blades. Keep the three divider plates in the
same position relative to each other and the Source Four
(refer to Source Four user manual for further details).
f.
Rejoin the top and bottom barrel casting. Starting at the
holes closest to the shutters, use the four pan head screws
and Ny-lok nuts to fasten the front barrel casting halves
together. Hold the Ny-lok nuts tight against the casting while
tightening the screws. Torque the screws to 25 inch/pounds
[From
Source Four Parts and Assembly Instructions
published by ETC].
g.
Insert the four shutter springs between the four dimples in
the shutter plate and the tabs in the lip of the casting.
Always wear protective eyewear during this procedure, as
the springs may pop out of place
[From
Source Four Parts
and Assembly Instructions
published by ETC].
h.
Twist and re-insert the front barrel assembly into the
reflector housing assembly, and fasten by inserting the
barrel rotation knob into the hole from which you previously
removed the retainer bolt (
Example 2
). Do not re-insert
the retainer bolt at this time. It will be used shortly.
i.
Re-insert the lens tube into the front barrel assembly, and
fasten by tightening the beam focus knob.
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