Instructions, Removal and replacement, Principal assemblies – SINGER 251 User Manual
Page 27
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
Advertising
27
INSTRUCTIONS
FOR
REMOVAL AND REPLACEMENT
OF
PRINCIPAL ASSEMBLIES
CAUTION TO MECHANICS
Machines of Class 251- are made with extreme precision in machining and
assembly,
and
the
"Superfinish"
process
provides
microscopically
smooth
bearing
surfaces. Therefore, special care should be taken not to permit any misalignment
of parts or to cause any scratches or nicks on the bearing surfaces by careless
assembly
or
handling
of
parts.
Any
such
damage
might
render
the
machine
incapable of the long, trouble-free service for which it is designed.
Advertising