18. Electrical System
Brushes
z Check brushes for abnormal wear, cracks or
moothness in the brush holder.
Wear, cracks or non-smoothness:→ Replace
Commutator
z Check Commutator for discoloration, abnormal wear
or undercut.
Abnormal wear or Damage: → Replace
z If the commutator is discolored, polish with a sand
paper and clean with a clean and dry cloth.
z If there is undercut, scrape out insulator B and make
its distance between A as d
d≥1.5mm
Armature Coil
z Check for continuity between each segment and
between each segment and armature shaft using a
multimeter.
z If there is no continuity between the segments or
there is continuity between segments and shaft,
replace the armature with a new one.
Oil Seal
z Check Oil Seal Lip for damage or leakage.
Damage or leakage: → Replace with a new
starting motor
18-5