Inspection Of Armature - TOHATSU MD 70-90C2 Service Manual

2) Inspection of Armature

Check commutator 1 for dirt. If necessary, clean by using
1.
sand paper of No. 600 or by air-blowing.
Measure commutator 1 outer diameter. Replace starter
2.
motor ass'y if outer diameter is less than specified value.
Commutator Outer Diameter : Standard Value
29.0 mm (1.14 in)
Wear Limit :
28.0 mm (1.10 in)
a of commutator 1. Replace starter
3. Measure undercut
motor ass'y if less than specified value.
Commutator Undercut : Standard Value
0.5 - 0.8 mm (0.020 - 0.031 in)
Wear limit a :
0.2 mm (0.008 in)
Check electrical conductivity of armature 2. Replace starter
4.
motor ass'y if other than specified condition.
Armature Conductivity :
b between commutator segments 3-3
c Between Segment - Armature Core
d Between Segment - Armature Shaft
TLDI 75/90C2 2010
Conductive
Non-conductive
Non-conductive
1
1
3
3
3 3
3
1
2
c
b
a
3
8
d
8-7