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ELECTRICAL
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ELECTRICAL
CLEANING & INSPECTION:
1.Armature, overrunning clutch, stator and
solenoid must be cleaned only with
compressed air.
2.Examine all parts for wear and damage.
3.Check the armature for inter-turn short circuit
with a growler.
4.Test for short circuit to ground using 03-
KDAW 9984 and 03-KDAW 9985,
Test voltage: 40V AC for 12V starter.
With one probe on the armature shaft,
run the other probe along the circumference
of the commutator segments. The indicator
lamp should not glow. Replace armature if
short circuited.
5.Examine the stator frame and permanent
magnets for damage. If damaged, replace the
stator frame.
6.Check ring gear for cracks and wear. Check
bushings in the ring gear and drive shaft. Renew
drive shaft with ring gear if damaged/worn.
7.Brush Length Check:
Unlock the brush holders on the brush plate and
check carbon brushes. Minimum allowable
length of carbon brushes 4.5mm.If carbon
brushes are to short or broken then replace the
entire brush plate.
8.Commutator run-out check
:
Check the commutator run- out as shown in fig.
Max. Allowable run out: At commutator – 0.01
mm, at laminated core – 0.05 mm. If it exceeds
the limits give a fine cut on the commutator on a
lathe, if it is not possible replace the Armature.
If worn points are visible on the commutator,
under cut the commutator with carbide until worn
points are no longer visible.
Commutator Min Dia: 31.2 mm