Rotor; Stator; Brush - Mazda MX-5 1990 Workshop Manual

G
CHARGING SYSTEM
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_I_~
05UOGX-028
05UOGX-029
05UOGX-030
05UOGX-031
T:EJ
F1
WEAR LIMIT LINE
STANDARD
L~
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9MUOGX-025
G-14
Inspection
Rotor
1_ Winding damage
(1) Check the resistance between the slip rings with an
ohmmeter.
Specification: 3.S-4.SfU20oC (68°F)
(2) If it is not within specification, replace the rotor.
2. Ground of field coil
(1) Check for continuity between each slip ring and the core
with an ohmmeter.
(2) Replace the rotor if there is continuity.
3. Slip ring surface
If the slip ring surface is rough, use fine sandpaper to re-
pair it.
Stator
1 . Wi ri ng damage
(1) Check for continuity between the stator coil leads with
an ohmmeter.
(2) Replace the stator if there is no continuity.
2. Ground of stator coil
(1) Check for no continuity between the stator coil leads
and the core with an ohmmeter.
(2) Replace the stator if there is continuity_
Brush
If the brushes are worn almost to or beyond the limit, replace
them.
Standard: 21.Smm (0.846 in)
Minimum: B.Omm (0.315 in)