Service Manual

Deformation
Break and
and damage
short circuit
Wear and roughness
Wear
Crack and damage
it
Break and
short circu
Wear to limit line
Figure 54
9. Check each diode in the rectifier for conduction.
Con
nect an ohm meter across the lead wire and diode
case. The diode is normal if its resistance is large in one
direction and small in the reverse direction. If there is
equal resistance in both directions the diode is dam-
aged. Replace the rectifier assembly if a diode is dam-
aged.
Figure 55
10. Check the field coil for continuity between the slip
rings. If there is no continuity, replace the field coil.
Figure 56
Liquid Cooled Diesel Engine P
age 4 - 42
Workman 3300-D/4300-D