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addition all associated wheels, spindles, and segments must be clean and freshly
lubricated.(All these points must slide or run easily. Pay particular attention to the delay
mechanism).
b) Place the mechanism in the casing and retain it with two screws.
c) Check the shutter with the shutter-speed measuring equipment. Fundamentally it is only
three basic times which are measured, adjusted, and ensured [zwar?], 1/250s, 1/30s, and
1/2s. The other times are obtained through the cam-plate. The measurement at 1/250s is
carried out at three points – the beginning, the centre, and the end – in the direction of
movement of the shutter-curtains in the film window. The shutter must operate uniformly,
i.e. the three measurements must give approximately the same values. This is achieved as
described in the following points, d) to g).
d) Spring-spindles 370.03 U7 must have the previously specified tension [specified in Point 3,
Curtains Unserviceable].
e) 1/30s adjustment Check shutter-time.
Example 1: 1/30s too light [i.e. time too slow]. Increase the spring-spindle tension for the
second curtain (this curtain is connected with the delay wheel 370.06-35).
f) 1/250s adjustment. Check shutter time.
Example 2: 1/250s too light [i.e. time too long]. Reduce the spring-spindle tension for the
first curtain.
Example 3: 1/250s too dark [i.e. time too short]. Increase the spring-spindle tension for the
first curtain.
g) 1/2s and the other slow times (1/15s to 1/2s) are basically only adjusted with the delay
mechanism by means of changing the pallet lever [if lever too short – i.e. time fast] or a
shortening of the lever end [if time too slow].
