Yanmar 3TNV82A-B Service Manual page 347

Starter Motor
Figure 11-13
See Starter Motor Specifications on page 11-7 for
the service limit.
Measure Commutator Insulation Depth
Measure the depth of the insulating material
(Figure 11-14, (1)) between commutator segments
(Figure 11-14, (2)). If the depth measures less
than the limit, use a hacksaw blade
(Figure 11-14, (3)) to remove the insulating
material until the depth is within the limit.
A normal commutator condition is indicated in
(Figure 11-14, (4)). An abnormal commutator
condition is indicated in (Figure 11-14, (5)).
(2)
(1)
(5)
Figure 11-14
See Starter Motor Specifications on page 11-7 for
the service limit.
TNV DI Service Manual
0000113
(3)
(4)
0000118
Armature Coil Continuity Test
Check for continuity between the commutator
segments using a multimeter (Figure 11-15). The
multimeter should indicate continuity.
Figure 11-15
If the multimeter does not indicate continuity,
replace the armature.
Armature Coil Insulation Test
Check for continuity between a commutator
segment and the shaft or armature using a
multimeter (Figure 11-16). The multimeter should
not indicate continuity.
Figure 11-16
If the multimeter indicates continuity, replace the
armature.
STARTER MOTOR
0000114
0000115
11-13