d)
Check for Surface Distortion
on
the Arma-
ture and the Commutator.
Use
a
dial gauge to measure the distortion
of
the out side surfaces of the armature
core and the commutator.
If it
is
above
the
limit, then repair
or
replace
it.
Unit
:
mm
I
I
Standard
(New)
I
Limit
(Used)
I
I
Armature
I
0.05
(Max.)
I
0.1
(Max.)
I
8
Q
COMMUTATOR
I
Commutator
I
0.05
(Max.)
I
0.1
(Max.)
I
Fig.
93
e) Check the Surface of
the
Commutator.
If
the commutator surface
is
rough, then
please use
No,
500-600
sandpaper to make
it
smooth.
f)
Check the Depth
of
the Insulating Material
from the Commutator Surface.
If
the
depth
of
the insulating material from
the commutator segments
is
less than the
limit, then please repair
it
by
filing it
down.
Unit
:
mm
I
Standard
(New)
Limit
(Used)
I
I
0.5-0.8
I
0.2
(Min.)
I
fig.
94
INSULATOR
w
0.5-0.8
mm
COMMUTATOR
SEGMENTS
CORRECT
INCORRECT
I
Fig.
95
-
57
-
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