Starter Motor Inspection - Suzuki TU250X Service Manual

STARTER MOTOR INSPECTION

CARBON BRUSH
Inspect the carbon brushes for abnormal wear, cracks or
smoothness in the brush holder.
If either carbon brush is defective, replace the brushes with new
ones.
Measure the length A of the carbon brushes using a vernier cal-
ipers. If the measurement is less than the service limit, replace
the brushes with new ones.
 Starter motor brush length A
Service Limit: 8.5 mm (0.33 in)
 09900-20101: Vernier calipers (150 mm)
COMMUTATOR
Inspect the commutator for discoloration, abnormal wear or
undercut A.
If abnormal wear is found, replace the armature with a new one.
If the commutator surface is discolored, polish it with #400 sand
paper and wipe it using a clean dry cloth.
If there is no undercut, scrape out the insulator with a saw blade.
ARMATURE COIL INSPECTION
Check for continuity between each segment and between each
segment and the armature shaft using the multi circuit tester.
If there is no continuity between the segments or there is conti-
nuity between the segments and shaft, replace the armature
with a new one.
 09900-25008: Multi circuit tester set
 Tester knob indication: Continuity test ()
BEARING INSPECTION
Check the bearing for smooth rotation and any abnormal noise.
If any defects are found, replace the bearing with a new one.
1 Insulator
2 Segment
ELECTRICAL SYSTEM 9-15