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Figure 4-6 Front cover light shield cam
Figure 4-7 Replacing light shield cam
When a new type shutter is installed, the cam in
the light shield must be inspected and changed
if necessary. The new cam should be installed
in the same place and manner as the old cam
(Figure 4-7). Remove the old cam uising an
x-acto knife to cut the plastic rivets. Place the
new cam in the same position, making sure the
cam lip goes over the edge of the light-shield as
shown, and the pins through the four holes. When
assembled, apply heat enough to peen over the
ends of the pins projecting through holes - thus
staking the unit in place.
If new cam are not available, it will be necessary
to install a new front cover assembly.
The mirror cover assembly consists of the mirror
cover, the boot, and the viewing mirror. Because
of its construction, ti is not feasible to disassemble
the mirror cover assembly itself and, therefore,
whenever one of its major components fails the
entire assembly is replaced. The mirror cover
could sustain damage in the form of cracks or
broken hinges, or overall distortion. The boot
could be cut, torn and damaged by wear. The
mirror could be loose or displaced in its mounts,
broken, or its surface damaged beyond cleaning.
Should any of these faults be evidenced, replace
the assembly.
NOTE : On older cameras, a coding system is
used to match Fresnels and mirror covers. When
changing mirror cover and Fresnel assemblies,
correct color coding must be employed to prevent
unacceptable tolerance buildup. This is usually
demonstrated by difcult cloding the camera,
etc. The chart below shows the color codes to
be used : a red coded Fresnel goes with either a
red, yellow, blue or white mirror cover; not with a
green mirror cover. The choice should be the rst
in order of the chart. Red rst, yellow second, etc.
The color code is located on the mirror cover, on
the underside, upper right-hand corner, viewed
as if holding the camera to take pictures. On the
Fresnel assembly, it is marked on the protective
paper at the point where the adhesive seals the
paper around the Fresnel.
B. MIRROR COVER / BOOT ASSEMBLY
COLOR CODES USED WHEN CHANGING
FRESNELS AND MIRROR COVERS
MIRROR COVER
Fresnel
● Red ● Yellow ● Blue ● Green ● White
● Red x x x x
● Yellow x x x x x
● Blue x x x x
● Green x x x x
● Black x x
Newer cameras employ a universal Fresnel/
Mirror cover assembly. No matching of coded
parts is necessary.
Removal
1. Erect the camera to picture-taking conguration.
2. Open and remove the front cover.
3. Remove the decorative leather covering from
the bottom cover.
4. Remove the four bottom-cover retaining screws.