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STARTER MOTOR
3TNV88F Service Manual
10-13
Starter Motor
6- Depth of insulation between commutator
bars
Measure the depth of the insulator between
the commutator bars. If it is below the limit,
correct or replace it with a non-defective.
Figure 10-20
2. Brush
1- Inspection of brush height
Measure the height of the brush. If it is below
the limit, its life is ending. Replace it with a
non-defective.
Figure 10-21
3. Brush holder
1- Insulation test for brush holder
Check the conduction between the brush
holder (positive side) and the base (negative)
side with a tester.
If there is no conduction, it is a non-defective.
Figure 10-22
2- Inspection of brush spring
Measure the brush spring load after aligning
the brush position to the commutator outer
diameter.
If it is out of range, replace the brush spring.
Figure 10-23
Standard
Limit
0.5 - 0.8 mm
0.2 mm
Standard
Limit
17 mm
12 mm
Hacksaw
Commutator
piece
Insulator
Defective
Non-defective
Chamfer
0.5~0.8mm
Commutator
046449-00EN00
Brush
046448-00EN00
Conduction
(Insulation failure)
Replace the brush holder
Load
14.5 - 18.0 N
046447-00X00
046446-00X00
3TNV88F_SVM_A4.book 13 ページ 2012年7月26日 木曜日 午後6時4分