Isuzu NHR 4J Series, Workshop Manual

Page: 357 / 406

6D3 – 12 CHARGING SYSTEM
2. Check for continuity across one of the stator coils and
stator core. If a continuity exists, replace the coil.
DIODE
1. Check for continuity across the terminal (example:
across BAT and U). If a continuity exists, the diode is
in satisfactory condition. If no continuity exists the
diode is defective.
2. Make a test with the polarities reversed. If no
continuity exists, the diode is in satisfactory condition.
If a continuity exists at any point, the diode is defective
and should be replaced.
Auxiliary diodes are not provided with the terminal and
continuity test should be made across the terminals of
the conventional diodes.
- side diode check
Across terminals BAT (Positive side (+) diodes)
Tester pin Positive side Negative side
Positive side No continuity
U.V.W
Negative side Continuity
+ side diode check
Across terminals E (Negative side (+) diodes)
Tester pin Positive side Negative side
Positive side Continuity
U.V.W
Negative side No continuity
BRUSH
Measure length of brushes.
Brush length (L)
mm (in)
Standard Limit
20 (0.79) 6 (0.24)
Brushes are provided with a line which indicates the limit
of usage.
6D3-12-1.tif
6D3-12-2.tif
6D3-12-3.tif
6D3-12-4.tif