Inspecting And Repairing Starter; Inspecting Brushes For Wear; Measuring Brush Spring Load; Inspecting Armature Coil - Mitsubishi S3Q2 Service Manual

2.3 Inspecting and repairing starter

2.3.1

Inspecting brushes for wear

Measure the length of the brushes. If the measured value is
less than the limit, replace both the brush holder assembly
and the brush assembly with new ones.
Item
Brush length
2.3.2

Measuring brush spring load

Using a new brush, measure the spring load at which the
spring lifts from the brush. If the measured value is less than
the limit, replace the spring with a new one.
Item
Brush spring load
2.3.3

Inspecting armature coil

(1) Inspect the armature coil using a growler.
Hold a piece of iron plate against the armature core. If
the iron plate vibrates, replace the armature with a new
one.
(2) Check that there is no continuity between the
commutator and the shaft (core).
If any continuity is observed, replace the armature with
a new one.
Standard Limit
18 mm 11 mm
[0.709 in.] [0.43 in.]
Standard Limit
26.7 to 36.1 N 14.7 N
{2.7 to 3.7 kgf} {1.5 kgf}
[20 to 27 lbf] [11 lbf]
Brush
Inspecting brushes for wear
Measuring brush spring load
Growler tester
Inspecting armature coil
Inspecting insulation between commutator and shaft
ELECTRICAL SYSTEM
Iron plate
12-9