12
Source Four Assembly Guide
Assembling front barrel
Tools Required:
•
#2 Phillips head screwdriver
Step 1:
Stand the top and bottom front barrel castings (6 and 7) upright with the shutter
end of the castings toward the bottom.
Step 2:
Slide the bottom divider plate (2), into its place in the bottom casting (7). The
dimples on the divider plate must point down.
Step 3:
With the bottom barrel casting (7) to your left, place two shutter blades (8) on top
of dimple plate (2) and opposite each other so together they form a barrier. The
handles should extend past the barrel casting, rivets pointed down. These will be
the side shutters (See
Figure 13
).
Step 4:
Place a divider plate (4) on top of the two shutter blades.
Step 5:
Place another shutter blade on top of the middle divider plates and perpendicular
to the previously installed shutter blades. This will be the top shutter, so align the
handle away from the bottom casting (7). Then place the other divider plate on
top.
Step 6:
Place the fourth shutter blade on top of the divider and through the bottom
casting in the final shutter position. Pull the blade and plate assembly slightly
forward to allow the handle to slip through the slot in the bottom casting. Then
fully seat the blader assembly into the casting again.
Step 7:
Place the top divider plate (3) on top of the fourth shutter blade.
W A R N I N G :
During assembly, the shutter springs can pop out of place. Always wear
protective eyewear during this procedure.
N o t e :
The top front barrel casting contains the iris slot.
N o t e :
The bottom divider plate (2) has four dimples punched into the surface; the top
plate (3) has none. The middle divider plates (4) are noticeably thinner-gauge
metal than the other two.
The notches on the divider plates must fit against the flanges in the casting so the
plates do not move.
W A R N I N G :
Divider plate edges are sharp. Handle with caution.
N o t e :
Make sure no shutter assembly components are under the pattern holder guides.
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