14
EXA Ia Repair Manual.
Basic Remarks:
The camera under repair is placed with the lens mount 300.21 U 6 to the front, i.e. in the photograph
taking direction.
Right: Side with wind-lever 750-005.00.
Left: Side with time-setting ring 750-004.00.
All screws and nuts have right-hand threads. Never use force! All screws secured with lacquer are to
be so secured on assembly.
A. Disassembly of camera
1. Take off the back cover 370.20.
a) Remove the take-up spool 370.09.
2. Remove the top-plate 750-001.00.
[Note there are 2 types of frame counter – first like Exa IIa – second like Exa IIb]
a) Set the time-setting ring 750-004.00 to B.
b) With the special tool undo the ring cover 370.41-21 [outer metal ring - use friction tool].
c) With the special tongues hold the frame-counter disc 370.41-25 and with the special tool
remove the screw 370.41-28 for the frame-counter disc.
d) Withdraw the frame-counter disc, if necessary note any washers.
e) Mark the position of the inter-ring 370.41-20 [the ring retaining the film-speed reminder],
and undo the three flat-head [cheese-head?] screws M1.4 x 2 DIN 84.
f) Take off the inter-ring with the film-type ring 370.41-20 and the spring shim 370.41-27.
g) Remove circlip 4 DIN 6799, shim 370.01-79 (as many as present), and the 3 fixing screws
M1.4 x 3 DIN 63 for the wind-lever 750-005.00. Withdraw the wind-lever (Note the
position of the wind-lever relative to the Schaltsegment 750-709.00 [the turning part on the
camera] and the shim 370.41-26).
Note:
With the modified film-type ring [like the Exa IIb] the disassembly is as in the following
sequence.
aa) Set the time-setting ring 750-004.00 to B.
bb) Remove glued-in cover disc (black) 750-000.37 (note position of index mark).
cc) With the special tongues hold the frame-counter disc 370.41-25 and with the special key
remove the screw 370.41-28 for the frame-counter disc.
dd) Withdraw the frame-counter disc, if necessary note any washers.
ee) Not applicable here.
ff) Not applicable here.
