DAELIM HISTORY 125 Service Manual page 191

● Remove the brush spring, and then remove the brush.
● Measure the brush length. Replace the brush if it is
worn beyond the service limit.
SERVICE LIMIT : 5 mm
TOOL : VERNIER CALIPER
NOTE
·If replacement, replace with a brush holder set.
● Check the commutator for :
-Damage or abnormal wear. → Replace with a new
one.
-Discoloration of the commutator bar. → Replace with
a new one.
-Metallic debris between commutator bars.→ Clean it
off.
● Check for continuity between pairs of commutator
bars.
● Make a continuity check between individual
commutator bars and the armature shaft.
● There should be no continuity.
● Check the needle bearing and oil seal.
-Do not rotate smoothly. → Replace with a new one.
-Damage oil seal. → Replace with a new one.
STARTER SYSTEM
BRUSH
COMMUTATOR
COMMUTATOR
BARS
ARMATURE SHAFT
NEEDLE BEARING
OIL SEAL
17-5