ELECTRICAL SYSTEM
12-17
2.4.7 Checking armature coil
(1) Inspect the armature coil using a growler.
Hold a piece of iron plate against the armature core. If
the iron plate vibrates, replace the armature with a new
one.
Inspecting armature coil for short circuit
(2) Check that there is no continuity between the
commutator and the shaft (core).
If any continuity is observed, replace the armature with
a new one.
Checking armature coil for grounding
(3) Check that there is continuity between segments in
various combinations.
If poor or no continuity is observed, replace the
armature with a new one.
Checking armature coil for breaks
2.4.8 Inspecting rear bracket
Replace the rear bracket if the bearing is worn.
Growler
tester
Iron plate