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• Inspect commutator for wear. If diameter is below limit,
replace armature.
Commutator outside diameter
Standard
32.0 mm (1.26 in.)
Limit
31.4 mm (1.24 in.)
• Inspect commutator for insulator depth. Correct or replace if
below limit.
Commutator insulator depth "a"
Standard: 0.4 – 0.6 mm (0.015 – 0.024 in.)
Limit: 0.2 mm (0.008 in.)
A: Correct
B: Incorrect
1. Commutator segment
2. Insulator
• Check commutator and armature core. If there is continuity,
armature is grounded and must be replaced.
• Check for continuity between segments. If there is no conti-
nuity at any test point, there is an open circuit and armature
must be replaced.
CRANKING SYSTEM 6G-11
0.8 kW
29.4 mm (1.16 in.)
28.8 mm (1.13 in.)
1.2 kW
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