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fourth order maintenance. The serVIce interval may be shortened
or
prolonged
properly according to tile
opera~ing
conditions.
C. Check
the wear condition of
th~
electtic brushes of model
TS 103, r:place the worn
outOlles.
Check
the,pres~ure·jof
their
springs with a spring weigher... The; pressure
should
be
within
Q~
9
-~.
3kg. If it iso's within this limit.,the spring should
be~replacecJ.
D. Check the wear
cQ;nditions
of
the
pinion,the;~·fro·nti~ov.er,
the interme·diate cover and
tlJ~
bt:Is·hing·:Qn the
rea,~''j~ov~r
fJ;epalce
them
if
they are. worn out
ba'dly.
E. Test
the insulation.s between. the armatur.e· (indthe.. ' "shaft,
the m.ageI).tic pole coil and the housing as'\vell.as
the:.br'Ushjn,s~la
tion frame and the rear cover
with
a multimeter.
F . Check
the attraction force of the magnetic .,switchwith the
storage battery · If the attraction. force is weak but.thesoldering
connection on the copper sheet-is s,t,ill perfect ,the magnetic s.witch
should be sent to the service shop for remedy orren·e.w.lf its con-
tact found poor in the course of use
,~hem
melt
away.the.~oldering
tin on the copper sheet of the bakelite casing,
t~rn
. off the .. tw o
bolts and take down the bake'lite casing
to
,check
and polis.h,the
contacts with No.
0
sandpaper (the spring inside the·bakelitercas-
ing should be cared during reassembling the switch).
81
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