Repair manual

2.420 Winding Knob Will Not Lock After One Complete Turn
Check to see which position (A or B) that camera winds through
in. Leave selector knob in that position. Remove bottom and
back. Test to see if it still winds through. If it does not
wind through with bottom removed, file back side of boss which is
drilled with 5/23 hole to receive 500 shaft. This will allow
lever to go farther forward.
If knob winds through even with bottom plate removed, it will
be necessary to remove top of camera. Remove top. (Section
21.100) Release and wind shutter several timesl, noticing the way
the 071 (X & Y) slides and 271 locking key are functioning during
the winding cycles. Winding and locking cycle works as follows:
503 center idler gear turns and pulls one of the 071 slides with
it and then releases it and 503 gear continues to turn. At same
time, the movement is being cocked by the 523 hour glass cam. As
movement cocks it, turns the 271 locking key which locks the 071
slides in place. The 503 gear is still turning and hooks the 071
slides. Because the 071 slides are locked in place, the 503 gear
stops and is locked. When the shutter is released, it turns the
271 key back to an unlocked position. This leaves the 071 slides
free to move so when the camera is wound the 503 gear turns and
pulls one of the 071 slides with it, starting the winding cycle
over again. If camera does not lock, it is usually caused by one
of two things: Either the 503 gear is not locking tightly in the
071 slides, indicating damaged 071 slides or 503 gear; or the 271
locking key is not locking the 071 slides. Which one of these
causes the trouble is determined by watching 071 slides during
winding cycle. If the 071 slides do not move and the camera
winds through the trouble lies between 071 slides and 503
gear.(Section 2.422) If the 071 slides do move, the trouble will
lie in locking key. (Section 2.421)
2.421 Locking Key
Wind gears and watch key. If it does not turn (lock), the
trouble will be in the movement, as it is not cocking (Section
1.340). If the key turns but fails to lock slides, it may be
due to either the key being damaged on edge that locks 071
slides or the key being misaligned. Check for damaged edge and
alignment. Key should be aligned so that with shutter released
the back right hand (Camera’s right hand side) corner is just
about touching the 071 slide.
If key is damaged, it is necessary to turn key around 180°
or replace. Remove movement.(Section 23.100) remove 127 cam
from bottom of 270 shaft below 271 locking key. Turn 271 key
180° and replace 127 cam on 270 shaft and lightly stake with
center punch. For proper alignment, centerlines of 271 key and
127 cam should be lined up. Replace movement according to
instruction. Check alignment of key. If not correct, remove
movement and make adjustment by turning cam. When adjustment
is correct, stake tightly and install movement. (Section
23.200)
If key is misaligned, remove movement and adjust as
described in above section.
2.422 071 Slide
If key locks, slides do not move and still the camera winds