## Starting System

#### Starter Overhaul (cont'd)

4-11

1. Use a circuit tester to measure the armature for grounding.

   If the circuit tester indicates continuity, the armature is grounded, replace the armature assembly.

1. Hold one probe of the circuit tester against the commutator segment.
2. Hold the other circuit tester probe against the armature shaft.

1. Measure the armature and commutator run-out. If the measurement is out of limit, correct the commutator and/or replace the armature assembly.

Armature run-out:

Standard:

0.05 mm (0.0020 in.) max.

Limit:

0.1 mm (0.0039 in.)

Commutator run-out:

Standard:

0.05 mm (0.0020 in.) max.

Limit:

0.1 mm (0.0039 in.)

1. If there is rough surface on the commutator, use sand paper number 500 to 600 for correction.

1. Inspect the commutator mica segment for excessive wear. If the mica segment depth is less than the limit, replace the commutator. Measure the mica segment depth.

Mica segment depth:

Standard:

0.5 – 0.8 mm (0.0197 – 0.0315 in.)

Limit:

0.2 mm (0.0079 in.)

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