6D2 – 8 STARTING SYSTEM
INSPECTION AND REPAIR
Make necessary correction or parts replacement if wear,
damage or any other abnormal condition are found
through inspection.
ARMATURE
Check the commutator for run-out and replace if the
amount of run-out exceeds the limit.
Run-out test mm (in.)
kw Standard Limit
2.2
2.0
0.02 (0.0008) 0.05 (0.0020)
Check the mica segment for wear.
Depth of mica segment mm (in.)
kw Standard Limit
2.2
2.0
0.7 - 0.9 (0.028 - 0.035) 0.20 (0.008)
Check the commutator outer diameter.
Commutator outer diameter mm (in.)
kw Standard Limit
2.2
2.0
35.00 (1.378) 34.00 (1.339)
Armature short circuit test
Check the armature for short circuit by placing it on a
growler tester. Hold a piece of hacksaw blade against the
armature core while slowly rotating the armature. A short-
circuited armature will cause the blade to vibrate and to be
attracted by the core. If the hacksaw blade is attracted or
vibrates, the armature, is short circuited, and must be
replaced.
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