Datsun BLUEBlRD P 410 Series Service Manual page 214

NOIses made
by
the
armature
rubbIng
agaInst
the
core
whIle
In
operatIon
IS
caused
by
too
large
a
clearance between the
armature
shaft and the
bushIng
so
the worn
parts should be
replaced
Wear between the shaft and
bushmg
IS
due
to
lack of OIl
so
that
attentIon
should be
gIven
to
proper lubrIcatIon
Lubncate
once
every half year USIng
good grade
of machIne
or
mobIle OIl
and lubncate
the
parts
through
the 011
nIpples
The
amount
of 011
requIred
IS
about 0 5
cc
for each bracket
201