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If a cleaning machine is not available the same procedure
can be followed by holding the movement firmly around the
winding stem with a pair of tweezers and shaking it in the clean
ing and rinsing fluids to ensure that they pass to all parts of
the movement.
The balance assembly should be cleaned in a small jar to
prevent damage to the hairspring. Only standard watch cleaning
fluids should be used. It should be remembered that when re-
oiling the movement only high grade watch oil should be used
and carefully metered. (Oil used in factory assembly is Elgin
#M56B.) Before the balance assembly is replaced in a repaired
movement the balance cups should be oiled no less than % full.
Before replacing the cannon pinion, apply grease to the center
arbor.
MODEL 29 SELF WINDING ATTACHMENT
The Model 29 self winding watch uses the Model 22 move
ment, details of which have already been given. To this is added
the self winding attachment which winds the watch during the
time the watch is worn; when taken off the wrist of a normally
active person, the reserve power in the mainspring is sufficient
to run the watch for a full day.
In this booklet will be found sketches showing the follow
ing:
Plate
XI) Completely exploded view of movement.
Plate XII) Oiling mainspring slipping tail.
When the Model 29 is cleaned as a movement, the main
spring and the mainspring slipping tail must be re-oiled to re
place the oil and grease washed away in cleaning.
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