STARTER MOTOR
11-14
TNV DI Service Manual
Starter Motor
Measure Armature and Commutator Run-Outs
Measure the armature core run-out and the
commutator run-out using a dial indicator
(Figure 11-17). Replace the armature if either of
the measurements is less than the limit.
Figure 11-17
See Starter Motor Specifications on page 11-7 for
the service limit.
Field Coil
Field Coil Continuity Test
Check for continuity between the field coil terminals
using a multimeter (Figure 11-18). The multimeter
should indicate continuity.
If the multimeter does not indicate continuity,
replace the field coil assembly.
Figure 11-18
Field Coil Insulation Test
Check for continuity between the field coil terminal
and the yoke using a multimeter (Figure 11-19).
The multimeter should not indicate continuity.
If the multimeter indicates continuity, replace the
field coil assembly.
Figure 11-19
Measure Brush Length
Measure the length of the brush (Figure 11-20).
Replace the brush if the length is less than the limit.
Figure 11-20
See Starter Motor Specifications on page 11-7 for
the service limit.
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