Armature Test

WARNING: This page is about a different car, the 2002 Kia Rio. However, it is still accessible from the selected car via links, so may be relevant.

Using ohmmeter, check continuity between commutator and core. See Fig 1 . If continuity exists, replace armature. Check for continuity between commutator and shaft. See Fig 2 . If continuity exists, replace armature.
Place armature on "V" blocks. Using a dial indicator, measure runout at commutator. See STARTER SPECIFICATIONS . If runout is not within specification, resurface commutator or replace armature.
Wipe commutator clean. Measure commutator outer diameter. See STARTER SPECIFICATIONS . If commutator is at, or less than limit, replace armature. Check depth of mold between commutator segments. Normal depth is .02-.03" (.5-.8 mm). Minimum depth is .008" (.2 mm). Replace armature if depth of mold is at, or less than minimum.

Fig 1: Checking Commutator To Core Continuity

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Checking Commutator To Shaft Continuity

Courtesy of KIA MOTORS AMERICA, INC.