12
Source Four Zoom Assembly Guide
Assemble front barrel assembly
Tools Required:
• #2 Phillips head screwdriver
1:
. Stand the top and bottom front barrel castings (1 and 2) upright with the shutter
end of the castings toward the bottom.
2:
Slide the bottom divider plate (4) into its place in the bottom casting (2). The dimples on the
divider plate must point down.
3:
With the bottom barrel casting (2) to your left, place one shutter blade (3) on top of dimpled
divider plate (4) handle facing outward, up and down. (See
).
4:
Place the middle gate plate (5) on top of the shutter blade.
5:
Place another shutter blade (3) on top of the divider plate and then place the other divider plate
on top.
6:
Place the two shutter blades on top of the divider. Pull the blade and plate assembly slightly
forward to allow the handle to slip through the slot in the bottom casting.
7:
Place the top divider plate (6) on top of the two shutter blades.
8:
With both front barrel castings still standing upright, join the two halves, sliding the handle of
the top shutter blade through the slot in the top front barrel casting (1).
9:
Connect the halves of the gate assembly using two PHMS screws (8). Hand tighten only (25 inch
pounds).
WARNING:
During assembly, the shutter springs can pop out of place. Always wear
protective eyewear during this procedure.
Note:
The top front barrel casting (1) contains the iris slot.
Note:
The bottom divider plate (4) has four dimples punched into the surface; the top plate
(6) has none. The middle divider plates (5) 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.
WARNING:
Divider plate edges are sharp. Handle with caution.
Note:
Install shutter blades with the rounded side facing up toward the front of the casting.
Note:
Make sure no shutter assembly components are under the pattern holder guides.
Note:
The tops of the two front barrel castings must be even. Adjust as necessary before
completely tightening the screws. Failure to do this could interfere with the barrel
rotation.
