ELECTRICAL 35 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 03KDAW 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
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