Toyota 3S-GE Repair Manual page 484

CH-20
CHARGING SYSTEM —- ALTERNATOR
Continuity ' _ l
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EH
PI3482
Ohmmeter
No Continuity
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P113565
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SW20
Length
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ST202 X
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P13729 212216
Ohmmeter Stator (Drive End Frame)
INSPECT STATOR FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity
between the coil leads.
If there is no continuity, replace the drive end frame
assembly.
INSPECT STATOR FOR GROUND
Using an ohmmeter, check that there is no continuity
between the coil lead and drive end frame.
If there is continuity, replace the drive end frame
assembly.
srzoz Brushes
INSPECT EXPOSED BRUSH LENGTH
Using vernier calipers, measure the exposed brush
length.
Standard exposed length:
10.5 mm (0.413 in.)
Minimum exposed length:
1.5 mm (0.059 in.)
If the exposed length is less than minimum, replace
the brushes (ST202) or brush holder assembly (SW
20).
ST202:
IF NECESSARY. REPLACE BRUSHES
Unsolder and remove the brush and spring.
Run the wire of a new brush through the spring and
the hole in the brush holder, and insert the spring and
brush into the brush holder.