Measure the length of the brushes and if they are
shorter than the limit, replace them.
Standard
(New)
Limit
(Used)
1
I
12.5
mm
I
9
mm
I
9-2-3
BRUSH
HOLDER
1)
Insulation Test for the Brush Holder
Check for continuity between the brush holder's
top (positive side) and its base (negative side). If
there is
no
continuity, then
it
is
good.
Continuity Exists: (Insulation failure)
Replace brush holder.
2)
Inspection
of
the Brush Springs
Check the return force
of
the brush springs.
r
Normal
force
(kg)
1.4
-
1.8
Brush
Fig,
55
Fig.
56
4k
Fig.
57
-
40
-
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