BF15DmBF20D
3)
Measure the mica depth.
If
the grooves are clogged,
clean the grooves and measure the depth again.
If
the
measurement
is
less than the service limit, replace the
armature.
1
Service limit
I
0.2
mm
(0.01
in)
I
4)
Check for continuity between each segment.
If
an open
circuit exists between any two segment, replace the
armature.
5)
Check for continuity between the commutator and arma-
ture coil core.
If
continuity exists, replace the armature.
6)
Ch ck fo ontinuity between the c
mmutator and arma-
ture shaft.
If
there
is
continuity, replace the armature.
I
I
16=5
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