DAELIM BESBI SC125 - Service Manual - page 169

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 : 6.5 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.

17-5

STARTER SYSTEM