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3.
Insert a #2 Philips screw-
driver through this opening and
remove
the
two
screws
holding
the rectifier.
4.
Remove
the
nut
anchor ing
the
"B"
terminal
bolt
and
the
capaci tor
mounted
thereto
on
the
outside
rear
of
the
bracket.
Then remove the third
Philips
screw
holding
the
brush-holder to the bracket.
S.
Carefully withdraw stator,
brush-holder and rectifier from
the rear bracket as one loosely
connected uni
t.
With the bracket out of the way, it is easy to unsolder the stator
winding leads from the rectifier quickly to avoid heat damage to
the diodes and I.C.
chips.
It is also easier to renew brushes
because there is no need to bend the connecting plates between the
brush-holder and the rectifier and possible damage the rectifier
molding.
When reversing this procedure, make sure that the stator winding
leads are gently pushed back (from possible contact with the rotor
body) after seating the stator into the rear bracket.
Inspection
Rotor Assembly
1.
Check the outside circumference of the slip ring for dirtiness
and roughness.
Clean or polish with fine sandpaper, if required.
A badly roughened slip ring or a slip ring worn down beyond the
service limit should be replaced.
Description
Slip ring O.D.
Runout
2.
Check
for
con-
tinuity
between
the
field
coil
and
slip
ring.
If there is no
continui ty,
the
field
coil
is
defective.
Replace
the
rotor
assembly.
Standard value
mm (in.)
33 (1.2992)
0.03 (.0012)
or less
103
Service limit
rom
(in.)
32.2 (1.2677)
0.2 (.008)
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