Isuzu 1999 RODEO Workshop Manual page 1240

4. Check for continuity between slip ring and rotor core.
In case of continuity, replace the rotor assembly.
Stator Coil
1. Check for continuity across the stator coils. If no
continuity exists, replace the coils.
Resistance value at 20°C.
Standard: Approx. 0.07W
STARTING AND CHARGING SYSTEM (6VD1 3.2L)
2. Check for continuity across one of the stator coils and
stator core. If a continuity exists, replace the coil.
Standard: More than 1MW
066RS017
Brush
Measure the brush length.
If more than limit, replace the brush.
Standard: 18.0mm (0.709in)
Limit: 5.5mm (0.217in)
066RS034
Rectifier Assembly
1. Measure the resistance between each diode terminal
and aluminum diode fin in forward and reverse
directions with the connection of the tester leads
switched. The diodes are normal if resistance is
nearly zero ohms in one direction and is infinitely high
in the other direction.
2. If a diode has no resistance or equal resistance in
both directions, it is defective and should be replaced
together with the holder.
6D3–23
066RS035
066RW024