9-2
INSPECTION
and
REPAIR
9-2-1
ARMATURE
1)
Check the diameter
of
the commutator.
If
the outside diameter
of
the commutator is
smaller than the limit, then replace armature
with a new one.
Standard (New)
29
mm
30
mm
Limit
(Used)
2)
Continuity Test for the Armature
Coil
Use a tester
to
check
for
continuity between par-
allel points on the commutator.
If
there is conti-
nuity, the armature is good.
No
continuity: (broken coil)
Replace the armature unit.
3)
Insulation Test for the Armature Coil
Use a tester to check for continuity between a
point
on
the commutator and the shaft or the
core.
If
there
is
no continuity, the armature
is
good.
Continuity Exists: (Short circuited coil)
Replace the armature.
Fig.
49
Tester
Fig.
50
I
Tester
Fig.
51
-
38
-
To Next Page
Loading...
Need help?
General
